Answer:
Step-by-step explanation:
let my present age=x
then 2(x-5)=x+2
2x-10=x+2
2x-x=2+10
x=12
my age=12 years
age of brother =12-3=9 years
age of sister= 9-2=7 years.
Given,
Diameter of circle=15cm
so, radius= D/2= 15/2
we know that circumference=perimeter
2πr= 2×22/7×15/2=47.1428cm
I believe your answer is (3) -9.
You use the first equation listed since x<0
So 2(-5)+1=-10+1=-9.
Answer:
the answer is 4.8 inches
Step-by-step explanation: First you have to figure out if A B or C is missing. In this one the b side is missing. Then you take side and square it. 3.4 squared. Then you take C and square it. C is the longest side. 5.9 squared. The equation should look like this 3.4+b=5.9 (pretent there squared) since there squared you mulitply them by themsleves to 3.4x3.4 and 5.9x5.9 when you've done that you take the c-a. 34.81-11.56=22.25 now you take 22.25 and square it. 4.8 inches