Answer:
C. (f+g)(x) = 5x^3 - x^2 + 5x + 2
Step-by-step explanation:
Combine like terms:
5x^3 + 0 = 5x^3
-4x^2 + 3x^2 = -x^2
5x + 0 = 5x
4 - 2 = 2
5x^3 - x^2 + 5x + 2
Answer:
1) A honeydew has 20 more calories than a cantaloupe
To find area of a right prism the equation is Bh
where B is area of the base of the triangle and h is the height
to find area of the base for this is 1/2b *hight of the triangle or .5*6*5=12.5
the height is 10
12.5*10=25
You can work out the perimeter by working out the sum of twice the length (l) and twice the width (w).
2l + 2w = 72
The area is length (l) * width (w)
l * w = 315.
Now we just need to do some rearrangement and isolate one of the terms so we can substitute it back into the area equation.
2l + 2w = 72
2l = 72 - 2w
l = 36 - w
-------
l * w = 315
(36 - w) * w = 315
36w - w² = 315
w² - 36w + 315 = 0
(w - 21)(w + 15) = 0
w = -15 cannot be right, because it can't be negative, so w = 21.
Now that we know the width is 21, we can substitute it into the perimeter equation to work out the length.
2l + 2w = 72
2l + 2(21) = 72
2l + 42 = 72
2l = 72 - 42
2l = 30
l = 15.
Therefore, the width is 21 cm and the length is 15 cm.
let x be the number of adults
let y be the number of child
3.5 x + 2.25 y = 50
x+ y =20 y = 20 - x
3.5 (20-y ) + 2.25 y = 50
70 - 3.5 y +2.25y =50
70 -1.25 y = 50
y = 16
and x = 4
