Answer:
B
Step-by-step explanation:
Given:
The equation is

To find:
The missing value.
Solution:
Let the missing value be k.


Using the formulae
and
.


Cancel out the common factors from both sides.

Multiply both sides by (x+1).

Therefore, the missing value is 5(x+1).
35x-37 because 3x×15=35 and 3×-17=-37.
Answer:
the answer is B.
Step-by-step explanation:
100*20 + 1/2*(60-20)*(100 - 12)
=2000 + 1/2*40*88
=3760
If 12 pairs of socks sell for $5.79, then the unit rate is 12 : 5.79. If we want to find a unit rate for one pair of socks, we need to divide 5.79 by 12:
5.79 / 12 = 0,4825
So the unit rate is 1 : 0.4825