Do a ratio tall over shadow. How tall is tree / shadow. How tall is person / shadow then cross multiply. X/7.5 =5/3. 37.5=3x. Divide by 3 answer 12.5
Answer:

Step-by-step explanation:
Let
y --->Mala's age
x---> sister's age
we know that
---> equation A
so
The sum of ages of the sisters is

substitute equation A in the expression of the sum of ages

simplify

Answer:
B. approximately 7 calories
Step-by-step explanation:
got it right, hope you do as well
Answer:
Step-by-step explanation:
standard form of fraction = -a/b
Example:
-4/2 = -2
4/-2 = -2
Answer:4/5
Step-by-step explanation:
2/15 + 10/15=12/15=4/5
easy right?