Answer:
Perimeter= 44.2 inches
Area= 70 inches squared
Step-by-step explanation:
Perimeter- Add all your sides together (10+ 17.2+2+3+7+5=44.2)
Area- 1/2bh (b=base, h=height)
Your base is the bottom of the triangle, so 2+7+5=14.
14 is your base
Your height is the 10
1/2 *14*10
1/2 of 14 is 7
7*10= 70
Don't forget to write inches squared or it will be wrong
Hope this helps :)
I assume first equation is x-y=1. Solve for x in the first one in terms of y so you get x=y-1 so then you plug it in for x to get y-1+2y=8 then solve for y to get y=3 and then plug it into first equation to get x-3=1 and solve for x
Answer
x=4
y=3
45=(x)+(x+1)+(x+2)
45=x+x+1+x+2
45=3x+3
42=3x
Divide both sides by 3:
14=x
The youngest one is 14, then 15, then 16.
Hope this helps :)
Answer:
I'm not sure but I did do it on a calculator so 1.515-1.56= -0.045
This year= 1 1/2 inches= 3/2 inches= 12/8 inches
Last year= 7/8
12/8-7/8=5/8
Hannah grew 5/8 inches more this year than last year.