Answer:
2/3
Step-by-step explanation:
Simplify
[tex]26=6\cdot \left(5-a\right)\\26=6\cdot 5+6\cdot -a\\26=30+6\cdot -a\\26=30+\left(6\cdot -1\right)a\\26=30-6a\\30-6a=26[/tex]
Group constants
[tex]30-6a=26\\30-6a-30=26-30\\-6a+30-30=26-30\\-6a=26-30\\-6a=-4\\[/tex]
Isolate the term, a
[tex]-6a=-4\\\frac{-6a}{-6}=\frac{-4}{-6}\\\frac{6a}{6}=\frac{-4}{-6}\\a=\frac{-4}{-6}\\\\\frac{-a}{-b} = \frac{a}{b}\\\\a=\frac{4}{6}\\a=\frac{2\cdot 2}{3\cdot 2}\\a=\frac{2}{3}[/tex]
If f(x) = 2x- + 1 and g(x) = x - 7, find (f- g)(x).
Answer:
hope this helps you
(f-g)(x)=2x+1-(x^2-7)
(f-g)(x)=2x+1-x^2+7
answer : (f-g)(x)= -x^2+2x+8
5(10h²-20h -30) what’s the answer it’s dueee today
I could be wrong, but your answer should be: [tex]50h^2-100h-150[/tex].
--------------------------------------------
Hope this helps!
Have a great day and God bless! :)
Answer:
[tex]50h^{2} -100h -150[/tex]
Step-by-step explanation:
Assuming that h has no defined value, all we have to do here is multiply every defined number(non-variable numbers) in the parentheses here by 5.
[tex]5(10h^{2} -20h -30)[/tex] Given
[tex]50h^{2} -100h -150[/tex] 5x10=50, 5x(-20)=-100, and 5x(-30)=-150
Find the values of X & Y
By using the fact that the two lines with the purple arrow are parallel, We can conclude that the angles are y = 133° and x = 47°
How to find the measures of angles x and y?First, notice that the two lines with the purple arrow are parallel lines, and these lines are intersected by the same line, then the 4 angles formed in the above line are the same ones than in the below line.
So, if the angle in the fourth quadrant of the above intersection is the same as the angle in the fourth quadrant of the below intersection, then we can see that:
y = 133°
And x + y should be equal to 180°, then:
133° + x = 180°
x = 180° - 133° = 47°
We can conclude that the angles are y = 133° and x = 47°
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a fruit salsa recipe calls for 2 cups finely chopped pineapple and 4 cups of finely chopped strawberries. isaiah only has 1 cup of pineapple. He reasons that because he subtracted 1 cup of pineapple he needs to use 3 cups of strawberries. is his reasoning correct? Explain.
The reasoning isn't correct.
How to explain the information?It should be noted that the fruit salsa recipe calls for 2 cups finely chopped pineapple and 4 cups of finely chopped strawberries
This implies that the ratio is:
= 2/4
= 1/2
= 1:2.
Therefore when Isaiah only has 1 cup of pineapple, the appropriate strawberry will be:
= 1 × 2 = 2
He's wrong as he doesn't need 3 cups.
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Can anyone explain how to simplify the square root of 20, in a simple and detailed way?
Accoreding to the given statement,
The simple method to find the value of √20 is to factorise the number under the root.
What is Factorisation?The process of breaking or decomposing an entity (such as a number, a matrix, or a polynomial) into a product of another entity, or factors, whose multiplication results in the original number, matrix, etc., is known as factorisation or factoring.
According to the given value;
The prime factorisation of 20 = 2 x 2 x 5 = 2 2 x 5
Thus, here we can see, 20 is not a perfect square, because we cannot pair digit 5 after factoring 20.
Only 2 2 can be taken out of the root.
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One January day in Munich, the temperature at noon was 3°C. At midnight the
temperature was -8°C. Write down the difference between these two
Temperatures.
Difference between temperatures is 11°C
As in the given problem we are provided data as
Temperature in Munich at Noon: 3°C
Temperature in Munich at Midnight: -8°C
to find out the difference we need to substract the temperature
Thus, Difference between temperatures will be:
3°C -(-8°C)
=> 3°C + 8°C
=> 11°C
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25%x4000=?
With explanation, please
Answer:
1,000
Step-by-step explanation:
25% as a decimal is .25
.25 x 4000
1,000
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{25\% \times 4,000}\\\\\mathsf{= \dfrac{25}{100}\times 4,000}\\\\\mathsf{= \dfrac{25\div25}{100\div25}\times \dfrac{4,000}{1}}\\\\\mathsf{= \dfrac{1}{4}\times \dfrac{4,000}{1}}\\\\\mathsf{= \dfrac{1\times4,000}{4\times1}}\\\\\mathsf{= \dfrac{4,000}{4}}\\\\\mathsf{= 4,000\div4}\\\\\mathsf{= 1,000}\\\\\huge\text{Therefore, your answer should be: \boxed{\mathsf{1,000}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]2(x+4)= 4x + 3-2x+5
does it equal an integer, no solution, or infinite solution?
what is 2.34 written as a percentage
Answer:
23.4%
Step-by-step explanation:
10 = (2.34 / 10) x 100% = 23.4%.
2x-20 and x+20 that makes ab parallel
If the two angles corresponds, hence the value of x that makes them to be equal is 40
Lines and angles
An angle is a point where two lines meet or intersect
Using the diagram below such that if the line a and b are parallel to each other hence the given angles are corresponding angles.
Equate both angles
2x - 20 = x +20
Collect the like terms
2x - x = 20 + 20
x = 20 + 20
x = 40
Hence the value of x that will make both angles correspond is 40
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Consider the sequence with first term 2 and second term 4. If these are the first two terms of a geometric sequence, what is the third term?
The third term of a given geometric sequence based on common ratio 2 is 8.
What is geometrical progression series?A geometric progression is a sequence in which any element after the first is obtained by multiplying the previous element by a constant which is called a common ratio denoted by r.
Given a geometric sequence.
First term = 2
Second term = 4
Common ratio = Next term / previous term
Common ratio = 4/2 = 2
So,
Common ratio = Third term / second term
The third term = common ratio × second term
The third b = 2 × 4 = 8
Hence "The third term of a given geometric sequence based on common ratio 2 is 8".
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10. Three math teachers went to Office Depot to buy school supplies. Mr. Smith bought nine boxes of
pencils, three boxes of markers, and twelve packages of notebook paper for $45.75. Ms. Santana
purchased five boxes of pencils, six boxes of markers, and eight packages of notebook paper for
$41.50. While Mrs. Baker spent $128 on twenty boxes of pencils, four boxes of markers, and fifty
packages of notebook paper.
Which of the following systems of equations can determine the price of these items individually?
System of equation are,
9x + 3y + 12z = $45.75
5x + 6y + 8z = $41.50
12x + 4y + 50z = $128
Where, x is number of boxes of pencil,
y is number of boxes of markers.
z is number of packages of notebook paper.
What is System of equation?
System of equation is two or more equations to be solved together. For a system to have a unique solution, the number of equations must equal the number of unknowns.
Now, Let number of boxes of pencil = x
Number of boxes of markers = y
Number of packages of notebook paper = z
Since, Mr. Smith bought nine boxes of pencils, three boxes of markers, and twelve packages of notebook paper for $45.75.
Hence, In expression is written as;
9x + 3y + 12z = $45.75
Ms. Santana purchased five boxes of pencils, six boxes of markers, and eight packages of notebook paper for $41.50.
Hence, In expression is written as;
5x + 6y + 8z = $41.50
Mrs. Baker spent $128 on twenty boxes of pencils, four boxes of markers, and fifty packages of notebook paper.
Hence, In expression is written as;
12x + 4y + 50z = $128
So, System of equation are,
9x + 3y + 12z = $45.75
5x + 6y + 8z = $41.50
12x + 4y + 50z = $128
Where, x is number of boxes of pencil,
y is number of boxes of markers.
z is number of packages of notebook paper.
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Divide and simplify. ∛64 x⁹ y³ / ∛8 x³
Solving the problem by Dividing and simplifying we have as a result 2x⁶y³
What is a division?A division is a basic mathematical operation, which has the purpose of dividing a number or element into two or more equal parts, as follows:
Dividend |_divisor
Divisions can also be expressed as a fraction as : a/b
What is simplification?Simplification is a process of reducing terms to expressions, which do not generate changes or values.
The algebraic expression we will divide and simplify to its smallest expression is:
∛64x⁹y³ / ∛8 x³
We solve the cube roots and substitute results, to split terms
∛64 = 4∛8 = 24x⁹y³ / 2x³
we can see that it is an expression that has two variables
2x⁹⁻³y³
2x⁶y³
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find three consecutive odd integers such that the third is 9 more than twice the sum of the first and second
Answer:
Step-by-step explanation:
let the three consecutive odd numbers be x,x+2,x+4
9+x+4 = 2(x+x+2)
thus x =
Compare square root of one hundred sixty and one hundred fifteen ninths using <, >, or =.
The comparison of the numbers are √160 > √115.1
How to compare the numbers?The numbers are given as
square root of one hundred sixty and one hundred fifteen ninths
Rewrite properly as
√160 and √115.11
By comparing the radical of both numbers, we have
160 and 115.11
160 is greater than 115.11
Hence, the comparison of the numbers are √160 > √115.11
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Solve for v
-11.4+5v=1.1
x(x-6) < 7
Solve the quadratic inequality. Write the solution set in interval notation.
Answer:
- 1 < x < 7 or x ∈ (- 1, 7)=============================
Given inequalityx(x - 6) < 7Distribute and simplify, then find the x-intercepts:
x(x - 6) < 7x² - 6x < 7x² - 6x - 7 < 0x² - 7x + x - 7 < 0x(x - 7) + (x - 7) < 0(x + 1)(x - 7) < 0The x- intercepts are:
x + 1 = 0 and x - 7 = 0x = - 1 and x = 7Since the leading coefficient is positive, the graph opens up, so the interval between the x-intercepts is negative:
- 1 < x < 7 or x ∈ (- 1, 7)
The average cost of regular gasoline in texas increased by 35% from
2010 to 2013. if the average cost of a gallon of gas in 2010 was $2.53, what was the
average cost in 2013? round to the nearest cent
Average cost of a gallon of gas in Texas in 2013 was $3.42.
Given,
Average cost of a gallon of gas in Texas in 2010 = $2.53
From 2010 to 2013 average cost of regular gasoline in Texas increased by 35%
We have to find the average cost of a gallon of gas in Texas in 2013:
= Average cost in 2010 × (135/100)
= 2.53 × (135/100)
= 2.53 × 1.35
= 3.4155
≈ 3.42
That is, the average cost of a gallon of gas in Texas in 2013 was $3.42 approximately.
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I've tried to solve this but I am still puzzled on what to do.
You are solving a measurement problem where the numbers 5.2187 x 10^−3, 2.05 x 10^7, and 3.40 x 10^3 are multiplied. How many significant digits should the product have?
A. 5
B. 3
C. 2
D. 1
Using scientific notation, the number of significant digits of the product is given as follows:
B. 3.
What is scientific notation?A number in scientific notation is given by:
[tex]a \times 10^b[/tex]
With the base being [tex]a \in [1, 10)[/tex].
When two numbers in scientific notation are multiplied, we have that:
The bases are multiplied.The power of 10 is kept.The exponents are added.For this problem, the product is given by:
[tex]5.2187 \times 10^{-3} \times 2.05 \times 10^7 \times 3.4 \times 10^3[/tex]
Multiplying the bases and adding the exponents, we have that:
[tex]5.2187 \times 10^{-3} \times 2.05 \times 10^7 \times 3.4 \times 10^3 = 5.2187 \times 2.05 \times 3.4 \times 10^{-3 + 7 + 3} = 42.8 \times 10^7[/tex]
42.8 has to be divided by 10 to assume for the base have only one digit, thus, to compensate, we have to add one to the exponent(equivalent to multiply by 10), hence:
[tex]42.8 \times 10^7 = 4.28 \times 10^8[/tex]
Hence, considering the rounding, the number has 3 significant digits(4, 2 and 8), and option B is correct.
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What is the coefficient in this expression 2 + m/4
20% of x is 15. What is x% of 120
Answer: x% of 120=3.6
Step-by-step explanation:
20% of x is 15---- .20*15=3, therefore x=3.
3%=0.03, 0.03*120=3.6
i dont know how people understand this.. help please
Based on the alternate exterior angle theorem, if m<1 = m<2, the statement which is true is that: B. n || m.
What are parallel lines?Parallel lines can be defined as two (2) lines that are always the same (equal) distance apart and never meet.
What is the alternate exterior angle theorem?The alternate exterior angle theorem states that when two (2) parallel lines are cut through by a transversal, the alternate exterior angles that are formed are congruent or angles of equal measure.
In this context, we can reasonably infer and logically deduce that the true statement which best proves that lines n and m are parallel is that angle 1 is congruent to angle 2 because by definition, all alternate exterior angles are congruent, if two (2) parallel lines are cut by a transversal.
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Help NEEDED PLEASE!!!!!!
The distance on the map between Yappy city and Quiet city is 23 cm.
What is the actual distance between citys?
The actual distance between Yappy city and Quiet city when it is 23 cm in map is 9.2 miles.
What is scaling ?
It is the technique to resize drawing with comparing to actual size of object which uses proportion or ratio. For example, Mapping of earth, drawing prototype of automobiles.
It is given that :
The distance on the map between Yappy city and Quiet city is 23 cm
and,
5cm = 2 miles
now, for 1 cm on map it is equal to 2/5 miles of actual distance.
Therefore to find the actual distance of 23 cm in map we simply multiply 23 with 2/5 :
actual distance :
2/5 x 23 = 9.2 miles
Therefore, the actual distance between Yappy city and Quiet city is 9.2 miles.
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A person who weighs 125 pounds on Earth would weigh 47 2/10 pounds on Mercury. Set up a proportion and solve using means and extremes to determine how much a child who weighs 50 pounds on Earth would weigh on mercury.
Answer:
7. A person who weighs 125 ponon Earth would weigh on Mercury. S a proportion and solve using means and extremes to determine how much a child w weighs on Earth would weigh on Mercury.
Step-by-step explanation:
Jan invests $800 at a rate of 3% per year simple interest
Calculate the value of her investment at the end of 4 years.
first we need to know 3 percent of 800.
0.03 times 800 = 24.
we get about 24 interest every year.
now for four years. 800 + 24 = 824.
824 times 4(implying four years) = $3296
The value of her investment at the end of four years is $3296
If 134n=54eight find n
Answer:
4.09
Step-by-step explanation:
n = 548/134
A jewelry maker will use 24 jade beads and 30 teak beads to make necklaces. each necklace will have the same number of necklaces she can make? how many beads of each type are on each necklace?
The number of beads of each type that are on each necklace will be 6 beads.
How to illustrate the information?It should be noted that the jewelry maker will use 24 jade beads and 30 teak beads to make necklaces. each necklace will have the same number of necklaces she can make.
Therefore, it van be seen that the highest common factor between 24 and 30 is 6.
Therefore, the number of beads of each type that are on each necklace will be 6 beads.
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Please help im stuck
The table represents the direct relationship y = - 3 · x. (Correct choice: C)
How to determine whether a table represents a direct relationship
Two variables have a direct relationship if and only if the following model is observed:
y ∝ x
y = k · x
Where k is the constant of proportionality.
The table may represent a direct relationship if and only if each ordered pair has the same constant of proportionality. Now we proceed to evaluate the table:
k₁ = - 3 / 1
k₁ = - 3
k₂ = - 9 / 3
k₂ = - 3
k₃ = - 15 / 5
k₃ = - 3
As k₁ = k₂ = k₃, then the table represents the direct relationship y = - 3 · x.
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Which of the following could be a real-world description of the quantity three times x end quantity divided by 8?
The real world representation of the given statement is the expression 3x/8
From the question, we are to write the real world description of the given statement.
The given statement is
"the quantity three times x end quantity divided by 8"
To write the real world description of the given expression, we will write the expression as a mathematical statement
Writing the expression as a mathematical statement
'quantity three times x" can be written as
3 × x
= 3x
Then,
"the quantity three times x end quantity divided by 8" becomes
3x ÷ 8
= 3x/8
Hence, the real world representation of the given statement is 3x/8
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