Do you need to use SOH-CAH-TOA??
Answer:
3 friends
Step-by-step explanation:
The mean age is 27 so 3 friends are above that age.
Answer:
x = abc/ (a+b)
Step-by-step explanation:
x/a + x/b = c
Multiply by ab to get rid of the fractions
ab(x/a + x/b) = abc
bx + ax = abc
Factor out an x
x( b+a) = abc
Divide each side by (a+b)
x ( a+b)/ (a+b) = abc/ (a+b)
x = abc/ (a+b)
The altitude might be another name for a height of a pyramid, lol, hope this helps