Answer:
56x = -152
Step-by-step explanation:
8(4+7x) + 6(-1 + 8) = -78
32 + 56x - 6 + 48 = -78
32 + 48 - 6
74 + 56x = -78
-74 -74
56x = -152
I used math
anyway
remember you can do anything to an equation as long as you do it to both sides
so
4n+2 and 1/2=2n+5
minus 2n both sides
4n-2n+2 and 1/2=2n-2n+5
2n+2 and 1/2=0+5
2n+2 and 1/2=5
minus 2 and 1/2 both sides
2n=2 and 1/2
divide both sides by 2
I mean times both sides by 1/2
n=1 and 1/4
answer is C
Answer:
10
Step-by-step explanation:
If you know how to use built-in statistical functions on a calculator such as the TI-83 or 84, you can solve this problem with one press of the ENTER key on the calculator:
normalcdf(-100, 400, 504, 111) = 0.17 (answer)
Otherwise, find the z-score associated with 400:
400-504
z= ------------- , and the use a z-score table to find the area under the
111 standard normal curve to the left of this z value.
The boy would have 3 brothers and 3 sisters therefore in the family there would be 4 boys and 3 girls