Simplify the expression. 9 – 5(–11x + 7)

5x - 26

Step-by-step explanation:

9 - 5(-11x + 7)

= 9 - (-55x + 35)

= 9+ 5x - 35

= (9 - 35) + 5x

= -26 + 5x

= 5x - 26

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: