B One hundred random students from the eighth grade
C The first 100 students from an alphabetical list of eighth graders
D The first 100 students from an alphabetical list of the entire school
Answer:
B is the right answer
Step-by-step explanation:
X = -11.
11(x+10)+5x=11+7x
11x + 110 + 5x = 11 + 7x
(11x + 5x) + 110 = 7x + 11.
16x + 110 = 7x + 11.
16x + 110 - 7x = 7x + 11 - 7x
9x + 110 + 11.
9x + 110 - 110 =11 - 110.
9x/9 = -99/9
X = -11
How to get answer by Mimiwhatsup:
Answer:
2/3 in
Step-by-step explanation:
We can use ratios to solve this problem.
1/4 inch x inches
-------------- = ---------------------
3 /8 ft 1 ft
Using cross products
1/4 * 1 = 3/8 * x
Multiply each side by 8/3 to isolate x
1/4 * 8/3 = 3/8*8/3 x
2/3 = x