What is substitution?

Answers

Answer 1

Answer:

to put a letter in the place of a number

Step-by-step explanation:


Related Questions

The circumference of a circle is 10 pie cm.what is the radius of the circle

Answers

Answer:

5

Step-by-step explanation:

Answer:

The radius of the circle is 5

Step-by-step explanation:

Write a formula for each situation.
There are sixty minutes, m, in an hour, h.

Answers

Hey there!

Equation: 60m = h

Goodluck and enjoy ^_^

Answer:

What is the rest of the question? There isn't enough information.

Step-by-step explanation:

A rectangular prism has a length of 4 inches, a height of 5 inches, and a width of 19 inches. What is its volume

Answers

Check the picture below.

The functions r and s are defined as follows. r(x)=-x-5 s(x)= -2x-5 . Find the value of s(r(4)).

Answers

Answer:

s(r(4)) = 13

Step-by-step explanation:

Substitute and calculate:


s(r(4)) = 13

what do you mean by the term standard unit ?​

Answers

A standard unit of measurement is a quantifiable language that helps everyone understand the association of the object with the measurement. It is expressed in inches, feet, and pounds, in the United States, and centimeters, meters, and kilograms in the metric system.

Answer:

When numbers become very small or large standard form (or standard index form) is used to make them manageable. In standard form or unit a number is written as:

[a number between 1 and 10] × [ an integer power of 10]

Ankur estimated the quotient of 15 and one-third divided by (negative 4 and two-thirds) to be 3. Which best describes his error? Ankur multiplied the compatible numbers 15 and –3. Ankur found that the quotient of a positive number and a negative number is negative. Ankur found that the quotient of a positive number and a negative number is positive. Ankur added the compatible numbers 15 and –3.

Answers

Answer:

C. Ankur found that the quotient of a positive number and a negative number is positive

Step-by-step explanation:

Given the expression that is solved by Ankur as shown;

[tex]15 \frac{1}{3} \div(-4\frac{2}{3} )[/tex]

We were told that Ankur got 3. Let us evaluate to see ankurs error.

change to improper fraction first

[tex]= 15 \frac{1}{3} \div(-4\frac{2}{3} )\\= \frac{46}{3} \div \frac{-14}{3} \\= \frac{46}{3} \times \frac{-3}{14} \\= \frac{-46}{14}\\ = -3.28[/tex]

Note that from the calculation the quotient of a positive number to a negative number returns a negative number. Based on Ankur's answer, he got a postive value which is one of his errors. He found out that the quotient of a positive number and a negative number is positive which is wrong.

Hence the correct option is C

Answer:

Step-by-stepAnkur found that the quotient of a positive number and a negative number is negative

Step-by-step explanation:

Given that:

Quotient of 15 and one-third divided by (negative 4 and two-thirds) = 3

Mathematically,

( 15 1/3) ÷ (-4 2/3) = 3

Here,

Dividend = 15 1/3 (positive)

Divisor = - 4 2/3 (negative)

Dividing a positive Dividend by a negative Divisor will always give a negative quotient

Hence,

15 1/3 = 46 / 3

-4 2/3 = - 14 / 3

46/3 ÷ - 14/3

= 46/3 * -3 / 14

Ankur must have either forgotten or neglected the negative sign in the divisor explanation:

so the answer is b

Can anyone figure this out pls

Answers

Answer:

there! so the one with the +3 would be placed higher up than the one with a negative 3 because they are referring to where the line crosses the y axis. other than that, they would be parallel lines.

Step-by-step explanation:

mr clean

What is 5X minus Y equals six minus 2X plus Y equals eight

Answers

Answer:

x = 8/3, y = 22/3

Step-by-step explanation:

5x-y=6-2x+y=8

5x-y=8 --- 1

6-2x+y=8 --- 2

by solving 1 and 2, x = 8/3, y = 22/3

what type of number is -√6 A)Rational number B)Irrational number C)whole number D)natural number E) integer number. Reply quickly please

Answers

Answer:

irrational number

Step-by-step explanation:

-3x + 6 = 2x - 24 how do i do this its not high school btw its 8th grade

Answers

Answer:

x = 6

Step-by-step explanation:

Ok first you need to get to combine like terms, so first subtract six from the left so it cancels out the left side and what you do to one side you have to do it to the other so after you do that you get

-3x = 2x -30

then you subtract 2x from the right side and 2x on the left side getting

-5x = -30

your  goal is to get  by itself so what you can do is divide -5 on both sides getting

x = 6

if you are wondering why its a positive and not a negative its because a negative divided or multiply by a negative makes a positive.

Answer:

x=6

Step-by-step explanation:

-3x+6=2x-24

6=5x-24

30=5x divide both sides by 5

x=6

Find the measure of each exterior angle for a regular octagon. Round to the nearest tenth if necessary.

Answers

Answer:

I guess it is 45°

Step-by-step explanation:

Hope it helps!!!!

Answer:

45°

Step-by-step explanation:

the sum of the exterior angles of a polygon is 360°

a regular octagon has 8 equal exterior angles , then

exterior angle = 360° ÷ 8 = 45°

Vince had $148.79 in his checking account. He wrote a check for $54.78 to buy a new skateboard. Then, Vince deposited his paycheck of $308.92. Vince also wrote a $10 check to charity. What is Vince's balance now?

Answers

Answer:

148.79 - 54.78 + 308.92 - 10 = 392.93

Step-by-step explanation:

Writing a check means taking away money, depositing a check adds money.

The local newspaper has letters to the editor from 60 people. If this number represents ​4% of all of the​ newspaper's readers, how many readers does the newspaper​ have?

Answers

Hello yesterday lol lol

Do 60 divided by 4 to get ur answer

Or you can multiply to get another answer too sense you probably need to get the full 100 percentage.

What is the surface area, in square feet, of the triangular prism?

Answers

Answer:

C. 108 square inches

Step-by-step explanation:

How do we find the surface area?

  ❖ To find the surface area, we have to calculate the area of each

       shape on a 3D figure.

Solving for Area of Triangles

[tex]\frac{3*4}{2}[/tex] [tex]12/2 = 6[/tex] [tex]6*2 = 12[/tex] Area of triangles are 12 square feet.

Solving for Area of Rectangles

[tex](8*3)+(8*4)+(8*5)[/tex]  [tex]24+32+40[/tex] [tex]96[/tex] Area of rectangles are 96 square feet.

Solving Area of Rectangle and Triangle

96 + 12108 square inches

Have a lovely rest of your day/night, and good luck with your assignments! ♡

Answer:

108 ft²

Step-by-step explanation:

Area of a rectangle = width × length

Area of a triangle = 1/2 × base × height

Surface area = rectange + rectangle + rectangle + 2 congruent triangles

                     = (3 × 8) + (4 × 8) + (5 × 8) + 2(1/2 ×3 × 4)

                     = 24 + 32 + 40 + 12

                     = 108 ft²

in your own words explain the steps you would need to take to find slope from the data table .​

Answers

Answer:

look at explanation, i got it on ed.

Step-by-step explanation:

Start by choosing two data points. Calculate the difference between the second y value and the first y value. Then divide that by the difference between the second x value and the first x value.

Answer:

Start by choosing two data points. Calculate the difference between the second y value and the first y value. Then divide that by the difference between the second x value and the first x value.

Step-by-step explanation:

Help me please........

Answers

Answer

4

~~~~~~~~~~~~~~~~~~~~~~~

Yeah it's 4 again double check!

Can yall answer this question?

Answers

Answer:

4/25

Step-by-step explanation:

This fraction to the power of 2 is the same as powering a normal number, so what you are going to do first is do each number Alone so 2 to the power of 3 is 4 and 5 to the power of 2 is 25 then just put it back to fraction 4/25

Hope this helpsssd

Well, I’m pretty sure the answer is 4/25 as 2x2 is 4 and 5x5 is 25

Please help me solve for x

Answers

Answer:

7

Step-by-step explanation:

E + F + G = 180°

112 + (13x-7) + 4x = 180

112 + 13x - 7 +4x =180

17x + 105 = 180

17x = 180 - 105

17x = 75

x = 75/17

Calculate the distance point A (−3, 6, 2) and point B (4, −5, 6) are from the origin. Round to the nearest tenth.

Approximately how much farther from the origin is point B than point A?

1.8 units
2.4 units
3.2 units
4.0 units

Answers

Answer: 1.8 units

Step-by-step explanation:

Select the solution(s) of the original equation. (x + 4)2 – 3(x + 4) – 3 = 0

Answers

Answer:

x = ± √3 = ± 1.7321

x = 1

x = -1

Step-by-step explanation:

If it correct can you give me Brainliest plz

Answer:

B and D

Step-by-step explanation:

EDGE2020 :)

what is the point slope form of (-7,5) , (1,-1)​

Answers

Answer:

y-5=-2/3(x-(-7))

Step-by-step explanation:

I just learned this recently as well so bare with me.

So the point slope form is y-y1=m(x-x1)

So first we have to find the slope. So we do 5-(-1)/-7-1=-6/8=-3/4

So now, we just have to plug in the numbers.

So y-5=-2/3(x-(-7)).

I know that looks a little funky but if you used the slope intercept form, you would get the same answer if you just simplified this version. Of course, you don't have to simplify this version because this version is completely acceptable.

I hope this helped.

Solve the system:
4x – 3y = -21
X=-y-14

Answers

Answer:

The solution for the system of equations is

x=2,y=−2

Explanation:

4x−3y=14.....equation (1)

y=−3x+4.....equation (2)

Solving by substitution

Substituting equation 2 in equation 1

4x−3⋅(−3x+4)=14

4x+9x−12=14

13x=14+12

13x=26

x=2

Finding y by substituting x in equation 1

4x−3y=14

4⋅2−3y=14

8−3y=14

8−14=3y

3y=−6

y=−2

Answer:X=−4x/3−21

                 y=4x/3+7

Step-by-step explanation:

There are 8 boys in a class of 20 students. What is the ratio of boys to girls?

Answers

Answer:

So the way to approach these is to look at the 2:5 as "parts". In total there are 7 parts (2+5). Because there are 7 parts and 140 students, you can divide 140 by 7, which means for each "part" there are 20 students. So then you can multiply, 2 parts male (40), 5 parts female (100). So there are 40 boys in that class.

Answer:

8:12

2/3

Step-by-step explanation:

-7.2x+3.5=-8.7x-10 help plz

Answers

-7.2x + 8.7x = -3.5 - 10
1.5x = -13.5
x = -13.5/1.5
x = -9

Please Help!!
Help!!!

Answers

Answer:

it is option D because it make supplementry or 180°

on friday, a local hamburger shop sold a combined total of 540 hamburgers and cheeseburgers. the number of cheeseburgers sold was three times the number of hamburgers sold. how many hamburgers were sold on friday

please help

Answers

Answer:

so you would do 540 times 3and that would equal 1620

HELP!!
The points M(-2, –7), N(-2,1), and O(–7, -5) form a triangle. find the
perimeter of the triangle.

Answers

Answer:

Step-by-step explanation:

The amount that Susan charges per hour for babysitting is directly proportional to the number of children she is
watching. She charges $4.50 for 3 kids.
How much would she charge to babysit 5 kids?

Answers

The amount that Susan charges per hour for babysitting is directly proportional to the number of children she is
watching. She charges $4.50 for 3 kids.
How much would she charge to babysit 5 kids?



The Answer to the question is : $7.5

Which pair of numbers have a greatest common factor of 2? Select each correct answer
10 and 2
6 and 12
2 and 24
4 and 6​

Answers

Answer:

10 and 2

2 and 24

4 and 6

Step-by-step explanation:

6 and 12 gcf is 6

Answer:

10 and 2, 2 and 24, 4 and 6

Step-by-step explanation:

do the prime factor tree method

10 and 2:

10: 2 x 5

2: 2

gcf/hcf : 2

2 and 24 :

2: 2

24: 2 x 2 x2 x 3

gcf/hcf : 2

4 and 6 :

4: 2 x 2

6: 2x 3

gcf/hcf : 2

why 6 and 12 don't work

6: 2 x 3

12: 2 x 2 x 3

they have 3 in common as well, meaning the hcf/gcf would be 2 x 3 which is 6, not 2

growth: Word problems V84
Kenny lives in Greenpoint, where the cost of living increases by 8% every year. If Kenny
spends $50,700 this year, how much can he expect to spend 11 years from now to maintain
the same standard of living?
If necessary, round your answer to the nearest cent.

Answers

Using an exponential function, it is found that he must spend $118,214 in 11 years to keep the same standard of living.

What is an exponential function?

An increasing exponential function is modeled by:

[tex]A(t) = A(0)(1 + r)^t[/tex]

In which:

A(0) is the initial value.r is the growth rate, as a decimal.

His current cost of living is of $50,700, which increases by 8% yearly, hence A(0) = 50700, r = 0.08, and the equation is:

[tex]A(t) = A(0)(1 + r)^t[/tex]

[tex]A(t) = 50700(1 + 0.08)^t[/tex]

[tex]A(t) = 50700(1.08)^t[/tex]

After 11 years, the cost will be given by:

[tex]A(11) = 50700(1.08)^{11} = 118214[/tex]

More can be learned about exponential functions at https://brainly.com/question/25537936

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