Answer:
52.63
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
x2 + 10x= 5
Take the coefficient of the x term
10
Divide it by 2
10/2 =5
Square it
5^2=25
Add this to both sides
First size: SA1 = 2B + Ph, where B = area of the base of the figure, P = perimeter of the base and h = height
SA1 = 2(12*7,2) + (12+7,2)*31 = 172.8 + 595.2 = 768 cm^2
Second size: SA2 = 2B + ph2 (where h2 is the new height, 31.9 cm)
SA2 = 2(12*7,2) + (12+7,2)*31.9 = 785.28 cm^2
It increases (by rounding it down) by 17 cm^2.
Answer:
If you meant x squares (x^2) +3x then the answer is 7.99
Step-by-step explanation:
3a- 2b + 8b - 2 + 6a + 3c
3a + 6a -2b +8b + 3c - 2
9a + 6b + 3c - 2