-9(y + 12) = 4(-7y -8)
Use the distributive property:
-9y - 108 = -28y -32
Add 32 to both sides:
-9y - 76 = -28y
Add 9y to both sides:
-76 = -19y
Divide both sides by-19
Y = 4
Answer:

Step-by-step explanation:
we are given

We can factor it

we can use grouping method

now, we can take out common terms

we can take 2x+5 from both terms

so, we get factor terms as

Well the variance is how close or far the points are from the mean.. so if it is a large variance then the sample with be very spread out. If your variance is large then your standard deviation is also large.
Answer:
The distance between the top of the well and the bottom of the well was 12 1/2
Step-by-step explanation:
(a.k.a B) i did it and got it right :)