10. consider the line segment in the graph. suppose r
is plotted in the above coordinate plane and is
collinear with a and b. if the ratio ar: ab is, then
what are the coordinates of r?

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

the height of the surface increases from the center out to the sides of the road

it is c!