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3 years ago

Three times a number plus 12 minus 5 times the same number is 22. What is the number?

2 answers:

7 0

Try writing the equation out but the answer is 5. Add 5+12 which is 17 then add till you get 22 so 17+5=22! That's how I do simple equations like this

sp2606 [1]3 years ago

5 0

The number is 15
hope this helps

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Compute.

Sholpan [36]

6 yr 7 months+ 2 yr 11 months = ?
6 yr + 2 yr = 8 yr

7 months + 11 months = 18 months = 1 yr 6 months

8 yr + 1 yr 6 months = 9 yr 6 months

answer is C. 9 yr 6 months

8 0

3 years ago

Definition: This is a number whose value we are trying to figure out. It is often represented by a letter or

Gre4nikov [31]

Answer:

deed

Step-by-step explanation:

5 0

3 years ago

1.The coordinates of the vertices of △RST are R(−4, −1) , S(−1, −1) , and T(−4, −2) .

Tju [1.3M]

RS points east; R'S' points north, so there has been a rotation 90° CCW.

After that rotation, point S would be at (1, -1). It is actually at (1, 1), so has been shifted 2 units upward.

A sequence that does the desired mapping is

c. rotation of 90° CCW about the origin
b. translation 2 units up

8 0

4 years ago

Which number from the data set 1, 1, 1, 2, 2, 3, 4, 5,5, and 25 is an outlier?

timofeeve [1]

Outliers are like outcasts of the group
Which number is farthest away from the average?
1-5 seems to be average

Solution: 25 is the outlier

6 0

3 years ago

Linear functions can be used to find the price of a building based on its floor area below are two of these functions,

Alborosie

Answer:

Part A) see the explanation

Part B) see the explanation

Part C) see the explanation

Step-by-step explanation:

The complete question in the attached figure

Part A) Find and compare the slopes

we have

Function 1

$y=40x+15,000$

This is a linear equation in slope intercept form

$y=mx+b$

where

y is the price of the building in thousands

x is the floor area in square foot

m is the slope

b is the y-intercept

we have

$m=\$40\ per\ ft^2$

Function 2

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

take two points from the data in the table

(400,32,000) and (700,56,000)

Remember that the price in the table is in thousands

substitute

$m=\frac{56,000-32,000}{700-400}$

$m=\$80\ per\ ft^2$

The slope of the Function 2 is greater than the slope of the Function 1

The slope of the Function 2 is two times the slope of the Function 1

Part B) Find and compare the y-intercept

we know that

The y-intercept is the value of y when the value of x is equal to zero

Function 1

$y=40x+15,000$

For x=0

$y=40(0)+15,000=\$15,000$

Function 2

Find the equation in point slope form

$y-y1=m(x-x1)$

we have

$m=80\\point\ (400,32,000)$

substitute

$y-32,000=80(x-400)$

Convert to slope intercept form

isolate the variable y

$y-32,000=80x-32,000\\y=80x$

For x=0

$y=80(0)=0$

The y-intercept of the function 1 is $15,000 and the y-intercept of the function 2 is zero (the line passes through the origin)

Part C) Describe each function as proportional or non proportion

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Function 1

$y=40x+15,000$ -----> is a non proportional linear function (because the line has a y-intercept)

Function 2

$y=80x$ ----> is a proportional linear equation (the line passes through the origin)

7 0

3 years ago