Solving for the variable 'a' gives the equation a = u - k
What is subject of formula?A subject of formula can be defined as a variable written in terms of other variables in an equation or given expression.
It is also recognized as the variable that is being worked out in an equation or expression.
Given the equation:
u=a+k
To make the variable 'a' the subject of formula, we have to take all other variables to the other side of the equality sign, making the variable 'a' stand alone.
We then have;
u - k = a
This is also written as;
a = u - k
Thus, solving for the variable 'a' gives the equation a = u - k
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Louise is reading a 300-page book. She reads 15 pages every day. Which graph correctly displays y, the number of pages that Louise has left to read after x days?
A graph titled How Much Louise Has Left to Read has days on the x-axis and pages on the y-axis. A line goes through (0, 300) and (2, 330).
A graph titled How Much Louise Has Left to Read has days on the x-axis and pages on the y-axis. A line goes through (0, 0) and (2, 30).
A graph titled How Much Louise Has Left to Read has days on the x-axis and pages on the y-axis. A line goes through (0, 300) and (3, 240).
A graph titled How Much Louise Has Left to Read has days on the x-axis and pages on the y-axis. A line goes through (0, 300) and (2, 270).
It should be noted that the graph which will correctly show the number of pages which Louise will have left to read after the number of days is D. A graph titled How much Louise has left to read has days on the x-axis and pages on the y-axis. A line goes through (0, 300) and (2, 270).
What is a graph?It should be noted that he a graph is a diagram that shows the relationships between two or more things.
In this case, it can be seen that Louise is reading a 300-page book and she reads 15 pages every day.
Therefore, the graph that correctly displays the number of pages which Louise has left to read after the number of days is a graph titled How Much Louise Has Left to Read has days on the x-axis and pages on the y-axis. A line goes through (0, 300) and (2, 270).
In conclusion, the correct option is D.
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26.
A gallon of milk costs $2.30 per gallon.
What is the cost per cup of milk?
What is the cost per fluid ounce of milk?
What is the cost per quart of milk?
The cost per cup of milk as required in the task content is; $0.14375.
The cost per fluid ounce of milk as required in the task content is; $0.018.
The cost per quart of milk as required in the task content is; $0.575.
What is the cost per unit measure of milk as given in each case scenario in the task content?It follows from the task content that the cost of each unit measure of milk is to be determined. Therefore, since the cost per gallon of milk is; $2.30.
1). Since there are 16 cups of milk per gallon, it follows that the cost per cup of milk is; 2.30/16 = $0.14375
2). Also, Since there are 128 fluid ounces of milk per gallon, it follows that the cost per fluid ounce of milk is; 2.30/128 = $0.018
3). Also, Since there are 4 quarts of milk per gallon, it follows that the cost per quart of milk is; 2.30/4 = $0.575
Ultimately, the cost per unit measure of milk in each case scenario has been determined and is as represented above.
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Answer the following questions about 3 numbers chosen from the numbers 1 through 16 (including 1 and 16): 1. suppose the numbers are chosen with replacement. what is the probability that the numbers chosen include both even and odd ones? 1/11 2. suppose now the numbers are chosen without replacement. what is the probability that the numbers chosen include both even and odd ones?
The probability that 3 numbers chosen with replacement contain both even and odd is 0.75 while the probability that 3 numbers chosen without replacement contain both even and odd is 0.8.
The numbers include 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
Case 1: with replacement
Let P (E) = probability of chosing even number is
P (E) = (Required outcome)/(Total outcome)
Required outcome = numbers of even number
Total outcome = total numbers
P (E) = 8/16
P (E) = 1/2
Let P (o) = probability of chosen odd number is
P (o) = (Required outcome)/(Total outcome)
Required outcome = numbers of odd number
Total outcome = total numbers
P (o) = 8/16
P (o) = 1/2
Since 3 numbers are chosen, there are 6 possible combination which are OEE, EOE, OEO, OOE EEO, and EOO
P (chosen 3 numbers) = P (OEE) + P (EOE) + P (OEO) + P (OOE) + P (EEO) + P (EOO)
P (OEE) =P(O)×P(E)×P(E)
P (OEE) =1/2×1/2×1/2
P (OEE) =1/8
P (EOE) =P(E)×P(O)×P(E)
P (EOE) =1/2×1/2×1/2
P (EOE) =1/8
P (OEO) =P(O)×P(E)×P(O)
P (OEO) =1/2×1/2×1/2
P (OEO) =1/8
P (OOE) =P(O)×P(O)×P(E)
P (OOE) =1/2×1/2×1/2
P (OOE) =1/8
P (EEO) =P(E)×P(E)×P(O)
P (EEO) =1/2×1/2×1/2
P (EEO) =1/8
P (EOO) =P(E)×P(O)×P(O)
P (EOO) =1/2×1/2×1/2
P (EOO) =1/8
P (chosen 3 numbers)=1/8+1/8+ 1/8+1/8+1/8+1/8
P (chosen 3 numbers)=6(1/8)
P (chosen 3 numbers)=3/4
P (chosen 3 numbers)=0.75
Case 2: without replacement, when the first number is chosen there is a reduction in the amount of the remaining numbers.
Let P (E) = probability of chosen even number is
P (E) = (Required outcome)/(Total outcome)
Required outcome = numbers of even number
Total outcome = total numbers
P (E) = 8/16
P (E) = 1/2
Let P (o) = probability of chosing odd number is
P (o) = (Required outcome)/(Total outcome)
Required outcome = numbers of odd number
Total outcome = total numbers
P (o) = 8/16
P (o) = 1/2
Since 3 numbers are chosen, there are 6 possible combination which are OEE, EOE, OEO, OOE EEO, and EOO
P (chosen 3 numbers) = P (OEE) + P (EOE) + P (OEO) + P (OOE) + P (EEO) + P (EOO)
P (OEE) =P(O)×P(E)×P(E)
P (OEE) =8/16×8/15×7/14
P (OEE) =1/2×8/15×1/2
P (OEE) =8/60
P (OEE) =2/15
P (EOE) =P(E)×P(O)×P(E)
P (EOE) =8/16×8/15×7/14
P (EOE) =1/2×8/15×1/2
P (EOE) =8/60
P (EOE) =2/15
P (OEO) =P(O)×P(E)×P(O)
P (OEO) =8/16×8/15×7/14
P (OEO) =1/2×8/15×1/2
P (OEO) =8/60
P (OEO) =2/15
P (OOE) =P(O)×P(O)×P(E)
P (OOE) =8/16×7/15×8/14
P (OOE) =1/2×7/15×4/7
P (OOE) =28/210
P (OOE) =2/15
P (EEO) =P(E)×P(E)×P(O)
P (EEO) =8/16×7/15×8/14
P (EEO) =1/2×7/15×4/7
P (EEO) =28/210
P (EEO) =2/15
P (EOO) =P(E)×P(O)×P(O)
P (EOO) =8/16×8/15×7/14
P (EOO) =1/2×8/15×1/2
P (EOO) =8/60
P (EOO) =2/15
P (chosen 3 numbers)=2/15+2/15+ 2/15+2/15+2/15+ 2/15
P (chosen 3 numbers)=6(2/15)
P (chosen 3 numbers)=4/5
P (chosen 3 numbers)=0.8
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For each pair of functions, find f(g(x)) and g(f(x)) .
f(x)=-x-7, g(x)=4 x
A composite function exists as a function that depends on another function. The values for f(g(x)) = 4x-7 and g(f(x)) = 4x -28
What is meant by composition function?In mathematics, function composition exists as an operation ∘ that takes two functions f and g, and has a function h = g ∘ f such that h(x) = g. In this operation, the function g exists used to the result of applying the function f to x.
Function composition is a mathematical procedure where two functions, f, and g, are taken and a function, h = g ∘ f, is produced such that h(x) = g(f(x)). The function g exists used in this operation on the outcome of applying the function f to x.
Let the two functions be f(x) = -x-7 and g(x) = 4 x
f(g(x)) = f(4x)
f(4x) = 4x-7
g(f(x)) = g(x-7)
simplifying the above equation, we get
g(x-7) = 4 (x - 7) = 4x -28
g(x-7) = 4x - 28
Therefore, the value of f(g(x)) = 4x-7 and g(f(x)) = 4x -28
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I'm thinking of a number and if I subtract 8 and
multiply by -3, I get 21, what is my number?
Answer:
15
Step-by-step explanation:
Answer:
The number is 1
Step-by-step explanation:
Let the number be x
Subtract 8 from x ==> x - 8
Multiply by -3 ==> -3(x - 8) = -3(x) -3(-8) = -3x - 24
This equals 21
So
-3x + 24 = 21
Subtract 24 from both sides:
-3x + 24 - 24 = 21 - 24
==> -3x + 0 = - 3
-3x = -3
Divide by -3
==> -3x/-3 = -3/-3
x = 1
Check
1 - 8 = -7
-3(1-8) = -3 x -7 = 21
Yvette looks at the pictures below and says the ratio of triangles to hearts is 3:5. Is Yvette correct or not?
Group of answer choices
O No, Yvette is incorrect because the ratio is actually 5:8.
O No, Yvette is incorrect because a ratio can not be determined from looking at shapes.
O No, Yvette is incorrect because the ratio is actually 5:3.
O Yes, Yvette is correct.
Answer:
Step-by-step explanation:
Multiply and simplify. 3∛2x² . 7 ∛32x⁴
On multiplying and then simplifying 3∛2x² . 7 ∛32x⁴, we get, 84x⁶
How can square roots be multiplied?1. Split the radicands in half. A number known as a radicand appears underneath the radical symbol.
2. To multiple radicands, multiply the integers as if they were whole numbers. Always keep the item beneath a single radical sign.
3. Use factoring to exclude any perfect squares from the radicand. To achieve this, check whether any perfect squares have the radicand as a factor.
4. Position the square root of the ideal square before the radical sign. Don't change the second component of the radical symbol.
5. Square the square's root. Sometimes it is necessary to multiply a square root by itself.
Given,
3∛2x² . 7 ∛32x⁴
⇒ [tex]21 (2^{1/3} ) x^{2+4} . 32^{1/3}[/tex]
⇒ [tex]21 (2^{1/3} ) x^{6} . 2^{5/3}[/tex]
⇒ [tex]21 (2^{1/3 + 5/3} ) x^{6}[/tex]
⇒ [tex]21 (2^{2} ) x^{6}\\84x^{6}[/tex]
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an electrical appliance will not work unless component qk does. component qk's reliability is 0.95. every other part of the appliance is 100% reliable. assume that we add a second back up for qk with reliability of 0.80 (this back up is the same as component qk but purchased from another manufacturer, so the reliability is different but it is also cheaper). what is the probability that the appliance does not work? (in this case, you have qk with reliability 0.95, qk first back up with reliability 0.95 and a second backup with reliability 0.80)
Answer:
0.99 or 99%
Step-by-step explanation:
This is actually much more simple than it sounds
Take 95% and add 80% of 5 because 5% of the time the QK piece will not work. 80% of 5 is 4. 95+4=99
Someone please help me! Ik its Sunday but i got sick so i couldnt do it over the weekend
Step-by-step explanation:
6 = 5/2x + k
6 = ( 5/2 . 2/1) + k
6 = 10/2 +k
6-5 = k
k = 1
Solve the compound inequality of 3b + 2 < 5b - 6 ≤ 2b + 9
The solution for the compound inequality is 4 < b ≤ 5.
Inequality
It is an expression mathematical that represents a non-equal relationship between a number or another algebraic expression. Therefore, it is common the use following symbols: ≤ (less than or equal to), ≥ (greater than or equal to), < (less than), and > (greater than).
The solutions for inequalities can be given by: a graph in a number line or numbers.
The question gives:
3b + 2 < 5b - 6 ≤ 2b + 9
You can write the previous compound inequality as:
3b + 2 < 5b - 6 (1)
5b - 6 ≤ 2b + 9 (2)
For inequality 13b + 2 < 5b - 6
3b-5b < -6 -2
-2b < -8
2b >8
b >4
For inequality 25b - 6 ≤ 2b + 9
5b-2b ≤ 9+6
3b ≤ 15
b ≤ 5
Combining the intervals, you have 4 < b ≤ 5.
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Sasha is aware that in the past few months her hips have become wider and her breasts have started to increase in size. these changes are due to?
Answer:
Probably puberty
Solve. Check for extraneous solutions. ∛x=8
x = 512 is not an extraneous solution of the equation.
[tex] \sqrt[3]{x} [/tex] = 8
Cubing both the side of the equation, we get
[tex] { \sqrt[3]{x} }^{3} [/tex]
= 8³
x = 512
Check for extraneous solution by putting the value x = 512 in the original equation
[tex] \sqrt[3]{x} [/tex] = 8
[tex] \sqrt[3]{512} [/tex] = 8
8 = 8
⇒ LHS = RHS
∴ x = 512 is not an extraneous solution of the equation.
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A multiple-choice examination has 15 questions, each with five possible answers, only one of which is correct. suppose that one of the students who takes the examination answers each of the questions with an independent random guess. what is the probability that he answers at least ten questions correctly? 0.03 0.02 0.01 0.00
The probability that the student will answer at least 10 questions correctly from a multiple-choice examination that has 15 questions, each with five possible answers and only one of which is correct is 0.00
Let P (C) = probability of a student picking a correct option is
P (C) = (Required outcome)/(Total outcome)
Required outcome = numbers of correct option
Total outcome = total numbers of option
P (C) = 1/5
Recall that
P (C) + P (C1) = 1
Where P (C1) is the probability of picking wrong option
P(C)+P(C^1 )=1
1/5+P(C^1 )=1
P(C^1 )=1-1/5
P(C^1 )=4/5
The probability of answering at least 10 questions correctly can be solved by using Binomial probability which states that
P(x)=(nCx) (p)^x (q)^(n-x)
P(x) is the probability of an event
n is the number of trial (15)
x number of specific outcome
p is the probability that the event will happen (1/5)
q is the probability that the event will not happen (4/5)
Probability of answering at least 10 questions correctly will be
P(10) + P(11) + P(12) + P(13) +P(14) + P(15)
P(x)=(nCx) (p)^x (q)^(n-x)
P(10)=(15C10) (1/5)^10 (4/5)^(15-10)
P(10)=(15C10) (1/5)^10 (4/5)^5
15C10=15!/((15-10)!(10!))
15C10=15!/((5)!(10!))
15C10=1307674368000/((120)(3628800))
15C10=1307674368000/43545600
15C10=3003
P(10)=(3003) (0.2)^10 (0.8)^5
P(10)=(3003)(1.024×〖10〗^(-7))(0.32768)
P(10)=0.0001
P(11)=(15C11) (1/5)^11 (4/5)^(15-11)
P(11)=(15C10) (1/5)^11 (4/5)^4
15C11=15!/((15-11)!(11!))
15C11=15!/((4)!(11!))
15C11=1307674368000/((24)(39916800))
15C11=1307674368000/958003200
15C11=1365
P(11)=(1365) (0.2)^11 (0.8)^4
P(11)=(1365)(2.048×〖10〗^(-8))(0.4096)
P(11)=0.000011
P(12)=(15C12) (1/5)^12 (4/5)^(15-12)
P(12)=(15C12) (1/5)^12 (4/5)^3
15C12=15!/((15-12)!(12!))
15C12=15!/((3)!(12!))
15C12=1307674368000/((6)(479001600))
15C12=1307674368000/2874009600
15C12=455
P(12)=(455) (0.2)^12 (0.8)^3
P(12)=(455)(4.1×〖10〗^(-9))(0.512)
P(12)=0.0000009542
P(13)=(15C13) (1/5)^13 (4/5)^(15-13)
P(13)=(15C13) (1/5)^13 (4/5)^2
15C13=15!/((15-13)!(13!))
15C13=15!/((2)!(13!))
15C13=1307674368000/((2)(6227020800))
15C13=1307674368000/12454041600
15C13=105
P(13)=(105) (0.2)^13 (0.8)^2
P(13)=(105)(8.19×〖10〗^(-10))(0.64)
P(13)=0.00000005505
P(14)=(15C14) (1/5)^14 (4/5)^(15-14)
P(14)=(15C14) (1/5)^14 (4/5)^1
15C14=15!/((15-14)!(14!))
15C14=15!/((1)!(14!))
15C14=1307674368000/((1)(87178291200))
15C14=1307674368000/87178291200
15C14=15
P(14)=(15) (0.2)^14 (0.8)^1
P(14)=(15)(1.638×〖10〗^(-10))(0.8)
P(14)=0.00000000197
P(15)=(15C15) (1/5)^15 (4/5)^(15-15)
P(15)=(15C15) (1/5)^15 (4/5)^0
15C15=15!/((15-15)!(15!))
15C15=15!/((0)!(15!))
15C15=1307674368000/((1)(1307674368000))
15C15=1307674368000/1307674368000
15C15=1
P(15)=(1) (0.2)^15 (0.8)^0
P(15)=(1)(3.277×〖10〗^(-13))(1)
P(15)=3.277×〖10〗^(-13)
Probability of answering at least 10 questions correctly will be
P(10) + P(11) + P(12) + P(13) +P(14) + P(15)
P (at least 10)=0.0001+0.000011+ 0.0000009542+0.00000005505+0.00000000197+ 3.277×〖10〗^(-13)
P (at least 10)=0.00011250667
Approximately
P (at least 10)=0.0001
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a. Solve 3-√(x-3)=x algebraically.
After solving the expression 3-√(x-3)=x algebraically, we get the result as 3.
Isolate the square root from the left hand side √x-3 = 3-x
Eliminate the radical on the left hand side by squaring on both sides-
Both sides must be raised to the second power.
(√x-3)² = (3-x)²
After squaring we get
x-3 = x²-6x+9
Solving the quadratic equation-
We get rearranged equation as -
x² - 7x + 12 = 0
(x-4)(x-3)=0
x=4,3
Check if the first solution is correct by putting it in original equation-
putting x=3 in 3-√(x-3)=x we get 3-0=3
Hence 3 is correct.
Check if the second solution is correct by putting it in original equation-
putting x=4 in 3-√(x-3)=x we get 3-1=4 which is not true
hence 4 is rejected.
Therefore, after solving the expression 3-√(x-3)=x algebraically, we get the result as 3.
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is (-1 ,-5) a solution to the inequality 4x+y<-3
The expression (-1 ,-5) is not a solution to the inequality 4x + y < -3
How to determine if (-1 ,-5) is a solution to the inequality 4x + y < -3?The inequality is given as
4x + y < -3
The solution is given as
(-1, 5)
Substitiute (-1, 5) for (x, y) in the inequality expression 4x + y < -3
So, we have
4(-1) + 5 < -3
Open the bracket
-4 + 5 < -3
Evaluate the sum
1 < -3
The above inequality is false
Hence, (-1 ,-5) is not a solution to the inequality 4x + y < -3
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graph g(x)=-2|x+5|-4
khan academy
Answer: [tex]f\left(x\right)\le \:-4[/tex]
Step-by-step explanation:
[tex]\begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\le \:-4\:\\ \:\mathrm{Interval\:Notation:}&\:(-\infty \:,\:-4]\end{bmatrix}[/tex]
Write the given rate as a fraction in simplest form 452 calories un 8 servings
The calorie serving in simplest form is 56.5
The rate in mentioned question will be number of calories present per serving.
So writing the given information in the form of rate -
Rate of calorie per serving = 452/8
Now, to convert the rate of calories in simplest form, we will perform division of both numerator and denominator of fraction by a common number. We can directly divide the numerator and denominator of fraction with 8. Else, we can perform division by simpler numbers too.
Indirect method -
Lets begin the division by 4
Rate of calorie per serving = 113/2
Further dividing by 2
Rate of calorie per serving = 56.5
Direct method will also give the same result, which is rate of calorie per serving = 56.5.
Hence, in simplest form (decimal) the rate of calorie per serving is 56.5.
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Do You Understand?
1. For 0.25 +1.037, why do you line up
the decimal point instead of lining up
the 7 and the 5?
We line up the decimal point so that the place value of other number does not changes.
A decimal is a number with an integral part and a fraction.Decimal numbers are between integers and represent the numerical values of quantities that are wholes and parts of wholes.Adding and subtracting decimal numbers is the same as adding and subtracting whole numbers. The most important thing to remember is to align the decimal places directly on top of each other when stacked. This stacks the digit values so that 1 is above 1, , the tens on the tens, the tenths on the tenths,, and so on. Note that if a number does not have the same number of decimal places as other numbers, you can pad all the digits to the right of the decimal point with zeros. Numerically, this looks like 3.15 = 3.150 = 3.150000000.
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+ Over the first 20 games of the season, the distribution of a basketball team's scores is bell shaped with a mean of 94 points per game and a high of 109. Over the next 10 games, the team scored 94, 110, 102, 93, 98, 99, 121, 96, 94, and 108 points. Which statement best describes the change in the team's average number of points per game? X The new mean is greater than the previous mean. The new mean is less than the previous mean. The new median is the same as the previous median. The new median is less than the previous median.
The new mean 101.5 is greater than the previous mean 94.
By adding up all the numbers in a data collection and dividing by the total number of values in the set, the mean (average) of the data set can be determined. The median is the middle when a data set is sorted from least to greatest.
The distribution of a basketball team's score with a mean of 94 points per game and a high of 109 for the first 20 games.
Mean = 94,
Points per game = 94, 110, 102, 93, 98, 99, 121, 96, 94, and 108 points.
Therefore,
The new mean = ( sum of observations) / Number of observations
New mean = ( 94 + 110 + 102 + 93 + 98 + 99 + 121 + 96 + 94 + 108) / 10
New mean = 1015 / 10
New mean = 101.5
101.5 > 94
Now, the new mean is greater than the previous mean.
Hence, the correct option is (A).
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For two events X and Y, P(X) = , P(Y) = , and P(X|Y) = . Find the probabilities. 1. P(Y · X) = 2. P(Y/X) =
1. The probability given as P(Y∩X) is; 2/25
2. The probability given as P(Y) * P(X) is; 4/15
What is the probability?
We are given the following probabilities;
P(X) = 2/3 , P(Y) = 2/5 , and P(X|Y) = 1/5
1. We want to find P(Y ∩ X).
This means probability of the set intersection of Y and X
Since P(X) = 2/3 , P(Y) =2/5 , and P(X|Y) =1/5, it means that we have a conditional probability.
Thus; P(Y∩X) = P(Y) * P(X|Y)
P(Y∩X) = 2/5 × 1/5
P(Y∩X) = 2/25
2. We want to find P(Y) * P(X)
Plugging in the relevant values gives;
P(Y) * P(X) = 2/3 × 2/5
P(Y) * P(X) = 4/15
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Complete question is;
For two events X and Y, P(X) =2/3 , P(Y) =2/5 , and P(X|Y) =1/5 . Find the probabilities.
1. P(Y∩X) = ____
2. P(Y)· P(X) =____
3. Given the function h(x) = 3x^2 - x^3 + 10x - 7 solve this by doing Inversed
Answer:
h(x) = 3x^2 - x^3 + 10x - 7 == 2
Step-by-step explanation:
The speed of the current in a river is 5 miles per hour. It takes 40 minutes longer for a girl to paddle a canoe 1. 2 miles upstream than the same distance downstream. What is her speed in stillwater?.
Speed in still water= [tex]\sqrt{43}[/tex]miles
Let take the speed in still water be x and the speed of current in the river be y.
The speed of the current in a river= 5 miles
Let the distance be s which is 1.2 miles.
The time(t) difference is 40 minutes.
We have an equation,
[tex]\frac{s}{x-y}[/tex] - [tex]\frac{s}{x+y}[/tex] = t
[tex]\frac{1.2}{x - 5}[/tex] - [tex]\frac{1.2}{x + 5}[/tex] = [tex]\frac{40}{60}[/tex]
1.2 × 60(2 × 5) = 40([tex]x^{2}[/tex] - 25)
x =[tex]\sqrt{43}[/tex]
Therefore the speed in still water is [tex]\sqrt{43}[/tex].
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Solve. Check for extraneous solutions. √2 x+6 - √x-1 =2
x = 5 is not an extraneous solution of the equation.
✓(2x + 6) - ✓(x - 1) = 2
✓(2x + 6) = 2 + ✓(x - 1)
Squaring both the sides of equation, we get
(✓(2x + 6))² = (2 + ✓(x - 1))²
2x + 6 = (2)² + (✓(x - 1))² + 2(2)(✓(x - 1))
2x + 6 = 4 + x - 1 + 4(✓(x - 1))
x + 3 = 4✓(x - 1)
Squaring again on both the side of the equation, we get
(x + 3)² = (4✓(x - 1))²
x² + 3² + 2×3×x = 16(x - 1)
x² + 9 + 6x = 16x - 16
x² - 10x + 25 = 0
By applying middle term splitting on equation (1), we get
x² - 5x - 5x + 25 = 0
x(x - 5) -5(x - 5) = 0
(x - 5) (x - 5) = 0
x = 5 and 5.
Check for extraneous solutions by putting value of x in original equation -
✓(2×5 + 6) - ✓(5 - 1) = 2
✓16 - ✓4 = 2
4 - 2 = 2
2 = 2
LHS = RHS
x = 5 is not an extraneous solution of the equation.
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The cities M, N, and O, in respective order, lie approximately in a straight line. The distance from city M to city N is 45 miles. The distance from city M to city O is 50 miles. Find the distance from city N to city O.
Step-by-step explanation:
so, MN + NO = MO
MO = 50 miles
MN = 45 miles
therefore,
45 + NO = 50
NO = 50 - 45 = 5 miles
Please help!! Describe the domain and range using interval notation.
Answer:
D= (-3,1]
R= [0,-4]
Step-by-step explanation:
[,] <-- used for when the point is included in the answer (closed circle or greater than/less than or equal to sign)
(,) <-- used for when the answer does not include point (open circle or greater than/less than sign not equal to)
Plug in the points where shown on each line.
Hope that helps a bit!
Example 2:
If f(x) = 2x+5, find each value. Show all work.
a) f(-2)
b) f(1)+5
c) f(x+3)
Answer: a. 1
b. 12
c. 2x+11
Step-by-step explanation:
f(x) = 2x+5
a. f(-2)=
2(-2)+5=
-4+5=1
b. f(1)+5=
2(1)+5+5=
2+5+5=12
c. f(x+3)=
2(x+3)+5=
2x+6+5=2x+11
Joy recently hired a landscaper to do some necessary work. On the final bill, Joy was charged a total $1215 x $445
was listed for parts and the rest for labor. If the hourly rate for labor was $70, how many hours of labor was needed to complete the job?
Joy was charged the labor of 11 hours .
Joy was charged a total of $1215 from the landscaper for listed parts and labor.
He was charged $445 for listed parts
He was charged the rest for labor
The hourly rate for labor is $ 70
Let the number of hours worked by labor be x
so, we can form a linear equation here as 445 + 70x = 1215
Now we have to solve this linear equation
445 + 70x = 1215
70x= 1215 - 445
70x = 770
x = 770/ 70
x = 11
Therefore, 11 hours of labor were needed to complete the job.
The correct question is Joy recently hired a landscaper to do some necessary work. On the final bill, Joy was charged a total $1215. $445 was listed for parts and the rest for labor. If the hourly rate for labor was $70, how many hours of labor were needed to complete the job?
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Find the values of x and y in parallelogram PQRS. PTy, TRx1, QTy, TSx = 7x+ 11
The values of x and y of the parallelogram PQRS are x = 2 and y = 11
What is the side length of the parallelogram?We're given the dimensions of parallelogram PQRS as;
PT = y
TR = 5x + 1
QT = 2y
TS = 6x + 10
T is the intersection of the two diagonals PR and QS and so the diagonals bisect each other.
The diagonal PR is cut into PT and TR, both of which are congruent or equal. Thus, PT = TR.
Similarly, the other diagonal QS is split in half as well. The two equal pieces are QT and TS. So QT = TS.
PT = TR
y = 5x + 1
and
QT = TS
2y = 6x + 10
Plugging the values gives;
2y = 6x + 10
2(y) = 6x + 10
2(5x + 1) = 6x + 10
2*5x + 2*1 = 6x + 10
10x + 2 = 6x + 10
10x + 2 - 6x = 6x + 10 - 6x
4x + 2 = 10
4x + 2 - 2 = 10 - 2
4x = 8
4x/4 = 8/4
x = 2
If x = 2, then y is...
y = 5x+1
y = 5*x+1
y = 5*2+1
y = 10+1
y = 11
Thus, the values of x and y of the parallelogram PQRS are x = 2 and y = 11
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The measure of ∠BQS is 78°. What is m∠NQS? *picture of the question is at the bottom*
Step-by-step explanation:
BQS=78
BQN=48
BQS+BQN=78+48=126
180-126=54°
NQS=54°
comfirm=BQN+BQS+NQS=180
48+78+54=180
Answer:
30°
Step-by-step explanation:
∠NQS + ∠BQN = ∠BQS
Knowing this information, we use the known measures to find ∠NQS
∠NQS + 48° = 78°
∠NQS = 78° - 48°
∠NQS = 30°
Thus, angle NQS is 30 degrees.
Hope this helps!
What is the relationship between 23 and 26?
Answer:
23 and 26? which numbers would you like to know?
Step-by-step explanation: