Answer:
z=67
Step-by-step explanation:
113+z=180 .. 67! :)
Answer:
8.4
Step-by-step explanation:
calculator; just use a calculator bc this is pretty simple bc u can just use a calculator lol. But of no calc, then you'd multiply both by 100, then do normal long division, to get 8.4.
Answer:
10 years old
Step-by-step explanation:
Let's say the age of the younger sister is x. Then the age of the older sister must be x + 2 because the ages are consecutive <em>even</em> numbers.
"Twice the age of the youngest exceeds the oldest by 8" means that we multiply x by 2 and set that equal to (x + 2) + 8:
2x = (x + 2) + 8
2x = x + 10
x = 10
So, the youngest sister is 10 years old.
Factor by grouping.
( a + 4b ) ( a + 8b ) .
Answer:
43.96
Step-by-step explanation:
I used the formula SA= 3.14(2)5+3.15(5^2)