3 years ago

Find the solution of this system of equations 2x-2y=-12 4x-7y=-15

1 answer:

6 0

2x - 2y = -12
- 2y = -2x - 12
y = x + 6

4x - 7 (x + 6) = -15
4x - 7x - 42 = -15
-3x - 42 = -15
-3x = 27
x = -9

y = -9 + 6
y = -3

(-9 , -3) is the solution

You might be interested in

How much does 9cm equal to inches

xxMikexx [17]

Answer:

Exactly 3.54331

Step-by-step explanation:

Since 1 cm = 0,39 inches, just multiply 0,39 by 9 and there is your answer.

4 0

2 years ago

Read 2 more answers

The following data are for 30 observations involving two categorical variables, x and y. The categories for x are A, B, and C; t

Galina-37 [17]

The correct answer would be A

6 0

2 years ago

Read 2 more answers

Whats an equation for (0,75) (7,40) in slope intercept form

Molodets [167]

The slope-intercept form: y = mx + b.

m - slope, b - y-intercept

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (0, 75) → y-intercept (b = 75), and (7, 40).

Substitute the coordimates of the points to the formula of a slope:

$m=\dfrac{40-75}{7-0}=\dfrac{-35}{7}=-5$

<h3>Answer: y = -5x + 75.</h3>

8 0

3 years ago

5р + 3р + (-9) ? <br><br>A. 8p+9 <br>B. 3(p+(-3))+5p <br>C. None of the above <br>.<br>.<br>.

kvv77 [185]

Answer:

none of the above

Step-by-step explanation:

because 5p + 3p = 8p and positive integers × negative integers = negative integers.

3 0

2 years ago

A swimming pool is 25 feet wide, 20 yards long, and 7 1/2 feet deep. What is the volume of the Pool?

NNADVOKAT [17]

Just multiply all the values together but first, remember 3 YARDS = ONE FOOT
25 x 60 x 7.5 because the formula is L x W x H
The volume is 11250 feet cubed
Hope this helps!

7 0

2 years ago

Read 2 more answers