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: -8>-7
Step-by-step explanation:
-8 is 1 less than -7
Answer:
21.005, 21.05, 21.15, 22.009, 22.01
Step-by-step explanation:
Answer:
- a=4
- b=12
- c=9
- You have correctly selected the standard form.
Step-by-step explanation:
(2x +3)² = (2x)² + 2(2x)(3) +(3)²
= 4x² +12x +9
Comparing that to ax² +bx +c, we can identify ...
Answer:
2(a-2)=2a-4
I do not understand what you wrote question or answer