Answer:
62 degrees, or A, is the answer
Step-by-step explanation:
combine expressions : 3x - 42 = 180
Then : 3x = 222
x = 74
74 - 12 = 62
Answer: 40
Step-by-step explanation:
Answer:
3.6 hours
Step-by-step explanation:
The formula is
1/a+1/b = 1/c where a and b are the times working along and c is the time working together
1/6 + 1/9 = 1/c
Multiply by 36c to clear the fractions
36c (1/6 + 1/9 = 1/c)
6c +4c = 36
10c = 36
Divide by 10
10c/10 = 36/10
c = 3.6 hours working together
For this case, we have that by definition, the area of a triangle is given by:
where:
b: It's the base
h: It's the height
In this case we have:
Substituting:
Answer:
