Step-by-step explanation:
- Line a & b are parallel
- m ∠ 8 = 150 °
[ Sum of co-interior angles ]
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Answer: x < -125
Step-by-step explanation:
-4x / (-4) < 500 / (-4)
x < -125
Answer:
15/s
Step-by-step explanation:
15 caps ÷ s = 15/s caps per swimmer
Answer:
498020 miles al
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
Let c = sum of ages of all children.
mean age of all children = c/15 = 7
c = 15 * 7 = 105
The sum of the ages of all children is 105.
Let b = sum of ages of the 9 boys.
mean age of boys = b/9 = 5
b = 9 * 5 = 45
The sum of the ages of the boys is 45.
The sum of the ages of the girls is c - b.
c - b = 105 - 45 = 60
The number of girls is 15 - 9 = 6
mean age of girls = (sum of ages of the girls)/(number of girls) =
= 60/6 = 10
