If x/a = 4, a/y = 6, a2 = 9 and ab2 = −8 then x + 2y = ?
select one:
a. −10
b. −15
c. −5
d. −13

-13

Step-by-step explanation:

We are given:

Since then has to be negative.

Solving therefore gives .

(Note: .)

and gives us:

.

Multiplying both sides by -3 gives: .

and gives us:

.

Multiplying both sides by gives: .

Divide both sides by 6 gives: .

Simplifying this gives us .

Now we are asked to find the numerical value for .

D.

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)

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation: