Answers
And third
And forth
Related Questions
If the expression for the tiles is 7(b-3)+8, what is the border number if the
TOTAL number of tiles is 57?
Answers
Answer:
b=10
Step-by-step explanation:
please if you like my answer you can mark it as brainliest
What is the answer to -27-8x>7(1-6x)
Answers
The shop got three kinds of fruit for sale. Apple, pear and peach. 40% of them are apples, 36% are pears, and 72 kg are peaches. How many kilograms of apples and pears did the store receive?
Answers
The kilograms of apples and pears that the store rreceiv is 120kg and 108kg.
How to illustrate the informationIt should be noted that 40% of them are apples, 36% are pears. The percentage for peaches will be:
= 100 - (40% + 36%)
= 24%
The total fruit will be x. This will be:
24% of x = 72
0.24x = 72
x = 72/0.24
x = 300
Apples will be:
= 40% × 300
= 120kg
Pears = 36% × 300
= 108kg
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If a union wage negotiator feels that the probabilities are 0.40,0.30,0.20 and 0.10 that the union members will get a $1.50 an hour raise, a $1.00 an hour raise,a $0.50 an hour raise, or no raise at all , find their expected raise.
Answers
The expected raise a union wage negotiator feels that the union members will get is $1.22.
The probability of each pay raise is given below
P ($1.50 raise) = 0.40
P ($1.00 raise) = 0.30
P ($0.50 raise) = 0.20
P (no raise) = 0.10
The probability of each pay raise is then multiplied by the pay itself
Expected raise for each hour = $1.50(0.40) + $1.00(0.30) + $0.50(0.20) + $0.00(0.10)
E(x) = 0.6 + 0.52 + 0.1 + 0 (The probability of no pay at all gives 0 since the pay amount has no value)
E(x) = $1.22
Therefore, all together the union wage negotiator is able to predict a $1.22 pay raise for the workers for each time expected.
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3/5 ; 0.35 ; 4% ; 3/11 least to greatest
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0.04, 3/11, 0.35, 3/5 would be the solution
On a family vacation, Rollin's family drove 480 miles from Cincinnati, Ohio to Charlotte, North Carolina. His dad drove 65% of the way and his mom drove 20% of the distance his dad drove. If his sister drove the remaining miles, about how many miles did his mom, dad, and sister each drive?
Answers
Answer:
Dad: 312 miles
Mom: 62.4 miles
Sister: 105.6 miles
Step-by-step explanation:
Dad: 480 x .65 = 312
Mom: 312 x .2 = 62.4
Sister: 480 - 312 -62.4 = 105.6
The high school auditorium has 800 seats. Suppose that the drama club has a goal of
making at least $3400 each night of their spring play. Student tickets are $4 and adult
tickets are $7. (Example 3)
a. Write a system of inequalities to represent the situation.
b. Graph the system of inequalities. In which quadrant(s) is the solution?
c. Could the club meet its goal by selling 200 adult and 475 student
tickets? Explain.
Answers
From the situation described in the problem, we have that:
a) The system of inequalities is given by: s + a ≤ 800, 4s + 7a ≥ 3400.
b) The solution is graphed at the end of the answer.
c) Yes, the club could meet it's goal.
What is a system of inequalities?A system of inequalities is when multiple variables are related in a described situation, and then inequalities are built to find the interval ranges of each variable, according to the relations built.
In the context of this problem, the variables are given as follows:
Variable s: Number of student tickets sold.Variable a: Number of adult tickets sold.The auditorium has 800 seats, hence:
s + a ≤ 800.
They have a goal of making at least $3400, hence, considering the price of the tickets, we have that:
4s + 7a ≥ 3400.
The graphical solution of the inequality is given by the painted region on the graph, and since point (200, 475) is inside the region, the club could meet it's goal.
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Evaluate each expression to four decimal places. e⁻³
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0.03337327... is expression to four decimal places. e⁻³.
The significance of an exponential function
A mathematical function with the formula f (x) = an x is an exponential function. where an is a constant known as the function's base and x is a variable. The transcendental number e, or roughly 2.71828, is the exponential-function base that is most frequently encountered.e⁻³ in your calculator, which gives you 0.03337327...
Since you need 4 decimal places, you need to look at the 5th decimal place. If it's 5 or more, you add 1 to the 4th decimal place. If it's less than 5, you leave the 4th decimal as it is.
In this case, the 5th decimal place is 7 and the 4th is 3. Since 7>5, the 4th decimal place changes from 3 to 4.
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4. What is the net force when a pair of balanced forces acts on an object?
A.It is less than one of the forces.
B.It equals one of the forces.
C.It is zero.
D.It is greater than both forces.
Answers
C.It is zero.
Step-by-step explanation:The net force is the sum of all of the forces exerted on an object.
Identifying Forces
Force is measured in newtons, which is shortened to N. Additionally, force will always have a direction, like 5N up or 3N to the left.
Sometimes force will be negative to represent direction. A force moving down or to the left might be negative because moving down or to the left on an axis moves towards negative numbers.
Net Force
As stated above, the net force is the sum of all of the forces acting on an object. For example, if one object is being moved 5N to the left and 4N to the right, the net force will be 1N to the left.
On the other hand, if the forces are balanced, like 5N on both the left and right, then the forces cancel out. This leaves a net force of 0.
Acceleration a in feet per second squared, distance traveled d in feet, velocity v in feet per second, and time t in seconds are related in the formula d=vt+1/2at².
a. Prove that if the values for distance, velocity, and time are known, then the acceleration of an object can be calculated using the formula a=2d-2v t/t²
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With the formula d=vt+1/2at², we can prove that the acceleration of an object can be calculated with a=2d-2v t/t²
To solve this problem we must establish the equation, isolate the variable (a) following the rules of clearance and solve the operations:
What is adding goes to the other side of the equality by subtracting.What is multiplying goes to the other side of the equality by dividing.d=vt+1/2at²
1/2at² = d - vt
at² = (d - vt)*2
at² = 2d - 2vt
a= (2d - 2vt) / t² verified
What is an equation?An equation is the equality between two algebraic expressions, which have at least one unknown or variable.
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Simplify each expression. (81y¹⁶ / 16 x¹²)¹/₂
Answers
Express 81 and 16 as a product of their prime factors. Apply the power rule for indices stating (a^m)^n = a^mn. Simplify the expression:
81=3x3x3x3 = 3^4
16 = 2x2x2x2 = 2^4
Thus, (3^4 x y^16 / 2^4 x X^12) ^ 1/2
3^4/2y^16/2 / 2^4/2 X^12/2
3^2 y^8 / 2^2 X^6 = 9y^8 / 4X^6
9y^8/4X^6 = (3/2)^2X^6y^8
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Transform function g(x) = -2 |x + 5| + 2
Answers
The values of g(x) are:
What is function?An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
given:
g(x) = -2 |x + 5| + 2
so, x= -4
g(-4)= -2|-4 + 5| +2
g(-4) = -2 +2
g(-4) = 0
at, x= -3
g(-3)= -2|-3 + 5| +2
g(-3) = -4 +2
g(-3) = -2
x= -1
g(-1)= -2|-1 + 5| +2
g(-1) = -8 +2
g(-1) = -6
and, x= 0
g(-4)= -2| 0+ 5| +2
g(-4) = -10 +2
g(-4) = -8
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How do I solve this I need help please
Answers
Answer:
-8
Step-by-step explanation:
(2)(-8)/2 convert it to a fraction and use fraction bar.
-16/2 = -8 Multiplication first then division
Note order of operations Division or multiplication which ever is first. also because the top of the fraction has parentherses do that first.
Follow PEMDAS first do the number in the parenthesis then divide
Jim's backyard is a rectangle that is 14 5 6 yards long and 10 2 5 yards wide. Jim buys sod in pieces that are 1 1 3 yards long and 1 1 3 yards wide. How many whole pieces of sod will Jim need to buy to cover his backyard with sod? Jim will need to buy pieces of sod to cover his backyard with sod.
Answers
Based on the dimensions of the rectangle and the dimensions of the sod, Jim will need to buy 87 pieces of sod to cover his backyard with sod.
How much sod should be bought?First, find the area of the backyard which is shaped like a rectangle:
= 14⁵/₆ x 10²/₅
= 154.27 yards²
The area of a single sod is:
= 1¹/₃ x 1¹/₃
= 1.78 yards²
The number of sods needed is:
= 154.27 / 1.78
= 86.775
= 87 sods
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Consider the midpoint of the diagonal AC.
A (3, -1) and C(7,-5)
Answers
The midpoint of diagonal AC is (5,-3).
Given A(3,-1) and C(7,-5)
Let the midpoint of diagonal AC be represented by P (say). Then the coordinate of P can be calculated by using the formula listed below:
let us suppose the coordinates of A be (a, b) and B be (c, d) and P is the midpoint of AC then the coordinate of P will be (a+c/2, b+d/2).
Now, by using the above formula, we get
x-coordinate of P be (3+7)/2 = 10/2 = 5
y-coordinate of P be (-1+(-5))/2 = -6/2 = -3
∴ The coordinate of midpoint of AC i.e., P be (5, -3).
Hence, the midpoint of diagonal AC is (5,-3).
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|x|-6>-16 solve the inequality
Answers
Answer: x∈[0;+∞)
Step-by-step explanation:
[tex]|x|-6 > -16\\|x|-6+6 > -16+6\\|x| > -10\\[/tex]
As |x|≥0, hence: x≥0
Francisco is a songwriter who collects royalties on his songs whenever they are played
in a commercial or a movie. Francisco will earn $30 every time one of his songs is
played in a commercial and he will earn $90 every time one of his songs is played in a
movie. Francisco earned a total of $360 in royalties on 8 commercials and movies.
Graphically solve a system of equations in order to determine the number of
commercials, a, and the number of movies, y, on which Francisco's songs were
played.
Answers
Answer:
30 c + 100 m = 700
c+ m = 14
Step-by-step explanation:
The product of the number of movies where the song was played (m) multiplied by the earnings per movie (30) plus the product of the number of commercials where the song was played (m) multiplied by the earnings per commercial, must be equal to $700.
30 c + 100 m = 700
The number of movies (m) plus the number of commercials (c) is equal to 14.
c+ m = 14
The system is:
30 c + 100 m = 700
c+ m = 14
£60 in the ratio 1:3
Answers
According to the solving this implies that the 1:3 ratio of 60 is 20.
What is ratio?A ratio expresses the number of times one number contains another. For example, if a dish of the fruit contains eight oranges and six lemons, the orange-to-lemon proportion is eight to six. Similarly, the lemonade and orange proportion is 6:8, while the orange to fruit weight ratio is 8:14.
How do I calculate the ratio?Ratios are used to compare the two quantities by dividing them. If you want to compare one data point (A) to another (B), your formula would be A/B. This signifies that you are dividing data A by data B. If A is five and B is ten, your ratio will be 5/10.
Briefing:Let us find 1/3 of 60.
We can write 1/3 of 60
= 1/3 × 60.
= 20.
According to the solving this implies that the 1:3 ratio of 60 is 20.
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Copy DEF to the line so that S is the vertex. This task will be complete when you have constructed an angle with vertex S that is congruent to DEF.
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There are numerous videos and web sites that can show you the process of copying an angle. Some are animated. The best we can do here is show you a diagram with instructions. Of course, your curriculum materials already provide that
__
1. Set the compass to a convenient radius. Use that to draw an arc through rays ED and EF, using point E as the center.
2. Without changing the compass setting, draw a similar arc using S as the center, making sure it crosses the line containing S and extends far enough to accommodate the following steps. (In the attached, we show a full circle, because the tool we used won't draw an arc with a specific radius.)
3. Mark the points where the arc crosses ED as G, and where it crosses EF as H. Mark the point where the arc crosses the line containing S as I.
4. Set the compass radius to the distance GH. Using I as the center draw an arc with that radius so that it crosses the one made in step 2. Call that intersection point J. (Again, we have shown a circle because of the limitations of the tool being used for our diagram.)
5. Draw ray SJ to complete the angle copy.
For each annual rate of change, find the corresponding growth or decay factor. +70 %
Answers
The corresponding growth factor of +70% is 1.7
The formula for the annual rate of change is
1 ± r (1)
where r = rate of change
and ± sign depends upon whether it is a growth or decay factor. If it is growth factor then it is plus sign otherwise negative sign.
According to the question we have been given the growth that is +70%. Since there is plus sign therefore it is a growth factor.
Thus, r = + 0.7
Putting this value in equation (1) we get
= 1 + 0.7
= 1.7
Hence the corresponding growth factor of +70% is 1.7
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Find the value of n in the proportion 3/4 = n/10
Answers
Answer: n = 15/2
Step-by-step explanation:
Divide both sides n/10 = 3/34
Calculate n = 3/4 x 10
Answer is n = 15/2
Are the following conditional statements true? Justify your answer by using counterexamples.
If a quadrilateral has four right angles, then it is a rectangle.
Answers
19 18 23 24 31 32 16 what is the median of this data set
Answers
Answer:
Step-by-step explanation: 23 is the median of the data set because it's the number in the middle.
Median: 16, 18, 19,23, 24, 31, 32
Mean: 16+18+19+23+24+31+32= 163 then divide by how many numbers you added by 163 divided by 7 equals 23.28571429. I'll just simplify it to 23.29 or rounding to tenths 23.3.
Answer:
Median = 23
Mean = 163/7 = 23.3 (1 d.p.)
Step-by-step explanation:
Given data set:
19, 18, 23, 24, 31, 32, 16
MedianThe middle value when all data values are placed in order of size.
Given data values in size order, from smallest to largest:
[tex]\sf 16, 18, 19, \boxed{\sf 23}, 24, 31, 32[/tex]
The middle value is 23, so the median of this data set is 23.
MeanThe sum of all data values divided by the total number of data values.
[tex]\begin{aligned}\implies \sf mean & =\sf \dfrac{19+18+23+24+31+32+16}{7}\\& = \sf \dfrac{163}{7}\\ & = \sf 23.28571429...\\ & = \sf 23.3\:(1\:d.p.)\end{aligned}[/tex]
Please someone help!!!!!!!!!!
Answers
Using the graph, the value of f(-3) is 2
Graph of functionsFrom the question, we are to determine the value of the given function
The given function is f(-3)
To determine the value of f(-3) on the graph, we will trace from the point where x = -3 on the x-axis to the line of the function and then trace from the line to the y-axis. The value on the y-axis is the value of f(-3)
From the graph,
Tracing from the point where x = -3 to the line and then to the y-axis, we get y = 2
∴ f(-3) = 2
Hence, the value of f(-3) is 2
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A long-distance athlete can run 12 kilometer in 3 minutes. How many kilometers can he run in an hour?
1/2 km 3/60 hr=1/2×60/3 its a yes or no question
Answers
If a long run athlete can run 1/2 km in 3 minutes then he can run 10 km in an hour.
Given, a long distance athlete can run 1/2 kilometer in 3 minutes.
How much distance can he cover in an hour = ?
How quickly something or someone is moving is determined by their speed. If you know how far an object has traveled and how long it has taken, you can calculate its average speed. Speed equals distance times time, according to the speed formula. Knowing the units for distance and time will help you determine what the units are for speed.
Time = 60 minutes.
we know that 3 minutes = 1/2 km
therefore, distance covered in an hour = 1/2 ÷ 3/60
= 1/2 × 60/3
= 1/2 × 20
= 10
distance covered in an hour = 10 km.
hence we get the distance covered by the athlete in an hour as 10 km.
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Solve each equation. 3 x⁻¹=24
Answers
The solution of the given expression 3x⁻¹=24 is x = 1/8.
What is meant by exponents?An exponent (also known as a power or degree) indicates the number of times the base is multiplied by itself. For example,'has an exponent of 5 and a base of. This means that variable would be multiplied 5 times by itself. This can also be thought of as to a fifth power.
Some properties of the exponents are given as-
Zero Property: Any non-zero real number raised to a power of zero equals one.Negative Property: Whatever nonzero real number raised to either a negative power is one divided by the same number raised to a positive power.Product Property: When two exponents that have the same nonzero real number base are multiplied, the result is the sum of the exponents that have the same base.Quotient Property: When two exponents that have the same nonzero real number base are divided, the result is the difference of the exponents that have the same base.Now, for the stated question;
The given expression is;
=> 3x⁻¹ = 24
Divide both sides by 3.
=> x⁻¹ = 8
Taking the reciprocal on both sides.
=> 1/x⁻¹ = 1/8
This 1/x⁻¹ can be written as x.
=> x = 1/8
Therefore, the value of the x for the given expression 3x⁻¹=24 is 1/8.
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what is the equation of the line that passes through the point (-2 0) and has a slope of 2
Answers
The equation of the line will be y = 2x - 2.
What is an equation of the line?A linear equation with a degree of one is referred to as a line equation. Two variables, x, and y are present in the equation of the line. The third parameter is the line's slope, which indicates the line's elevation.
The general form of the equation of the line is given as:-
y = mx + c
Given that the equation of the line is passing through the point ( -2,0) and the slope of the line is 2.
The equation of the line will be calculated as:-
y = mx + c
-2 = 0 + c
c = -2
y = mx + c
y = 2x - 2
Therefore, the equation of the line will be y = 2x - 2.
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You can construct a triangle with compass and straightedge when given three parts of the triangle (except for three angles). Which of the following given sets could result in the ambiguous case?
(A) Given: three sides
(B) Given: two sides and an included angle
(C) Given: two sides and a non-included angle
(D) Given: two angles and a non-included side
Answers
Answer:
Given: two sides and a non-included angle
Step-by-step explanation:
This can sometimes result in 2 possible values when using the Law of Sines, since sin(180°-x)=sin(x)
I need the anwser asap!!
Answers
Answer: The value of the triangle = 3.
The value of the square = -2,
The value of the star = 7
The value of the rhombus = 18.
The value of the circle = 4,
The value of the right angle triangle = -5
Step-by-step explanation:
Define Linear equation:
A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form Ax + B = 0. Here, x is a variable, A is a coefficient and B is constant. The standard form of a linear equation in two variables is of the form Ax + By = C. Here, x and y are variables, A and B are coefficients and C is a constant.
An equation that has the highest degree of 1 is known as a linear equation. This means that no variable in a linear equation has an exponent more than 1. The graph of a linear equation always forms a straight line.
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
Given that,
Let us assume the values is,
(Option 1) : A shape puzzle is given that,
Let's assume, the triangle shape represents = a
Let's assume, the square shape represents = b
Let's assume, the star shape represents = c
The equation becomes,
clue 1 : 2a-1 = 5
clue 2 : a + b = 1
clue 3 : a-2b = c
First take, clue 1 : 2a-1 = 5
2a = 5+1
2a = 6
a = 6/2
a = 3
Therefore, triangle (a) = 3
Take, clue 2 : a + b = 1
Replace 'a' value in this equation,
a + b = 1
3+b = 1
b = 1-3
b = -2
Therefore, square (b) = -2
Take clue 3 : a-2b = c
Replace with 'a' and 'b' values in this equation,
a-2b = c
3-2(-2) = c
3+4 = c
c = 7
Therefore, star (c) = 7
we can substitute these values,
Then, clue 1 : 2(3) -1 = 6-1 = 5
clue 2 : 3 + (-2) = 3-2 = 1
clue 3 : 3-2(-2) = 3+4 = 7
Thus, The value of the triangle = 3.
The value of the square is = -2,
The value of the star = 7
after using the concept of linear equation in two variables.
(Option 2) : A shape puzzle is given that,
Let's assume, the rhombus shape represents = x
Let's assume, the circle shape represents = y
Let's assume, the right angle triangle shape represents = z
The equation becomes,
clue 1 : x+2 = 5y
clue 2 : 3y = 12
clue 3 : 2y = x+2z
Take, clue 2 : 3y = 12
y = 12/3 = 4
Therefore, circle (y) = 4
First take, clue 1 : x+2 = 5y
x+2=5(4)
x+2=20
x = 20-2 = 18
Therefore, rhombus (x) = 18
Take clue 3 : 2y = x+2z
Replace with 'x' and 'y' values in this equation,
2y = x+2z
2(4) = (18)+2z
2(4) = (18)+2z
8 = (18)+2z
8-18 = 2z
-10 = 2z
z = -10/2
z = -5
Therefore, right angle triangle (z) = -5
we can substitute these values,
Then, clue 1 : 18+2=5(4)
20 = 20
clue 2 : 3(4) = 12
12 = 12
clue 3 : 2(4) = 18+2(-5)
8 = 18-10
10+8 = 18
18 = 18
Thus, The value of the rhombus = 18.
The value of the circle = 4,
The value of the right angle triangle = -5
after using the concept of linear equation in two variables.
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Application problem with a linear function: Finding a coordinate given the slope and a point
Answers
The height of the candle which is a linear function with respect to time after 12 hours was 25.2 centimeters.
What is a linear function?A linear function has a graph of a straight line.
Given that height of a candle is a linear function of the amount of time in hours it has been burning.
The slope(m) is = - 0.4 which is = -(4/10) = - (2/5).
The height of the candle after 19 hours is 22.4 centimeters, which can be written as two points (x,y) = (19,22.4).
Now to obtain the height of the candle first we have to form an equation of a line in slope intercept form to find y-intercept(b), which is,
y = mx + b.
22.4 = -(2/5).19 + b.
22.4 = -7.6 + b.
b = 22.4 + 7.6.
b = 30.
∴ y = -(2/5)x + 30.
Now to obtain the height of the candle after 12 hours we have to substitute 12 in x.
So, y = -(2/5)(12) + 30.
y = 25.2 centimeters.
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