Answer:
16
Step-by-step explanation:
3/4 = 12/x
Since 3 × 4 = 12
[Apply the same number with the numerator and denominator]
4 × 4 = 16
x = 16
Let
x---------> represents Martin's sister's age
y--------> represents Martin's age
we know that
--------> equation 
--------> equation 
Substitute equation
in equation 
![x+[x-6]\leq 22\\2x\leq 22+6\\ x\leq 14](https://tex.z-dn.net/?f=%20x%2B%5Bx-6%5D%5Cleq%2022%5C%5C2x%5Cleq%2022%2B6%5C%5C%20x%5Cleq%2014)
therefore
<u>the answer is</u>
Part a) An inequality that can be used to represent this situation is
or 
Part b) the oldest age Martin's sister can be is
years old
Answer:
D. 159
Step-by-step explanation:
It's b. -1,-2,-4,-8,-16,-32
because
Answer:
180 or b
Step-by-step explanation:
3 times 60 is 180 because there are 60 seconds in a minute