Answer:
L=10cm , W=30cm
Step-by-step explanation:
First use the given that W=10+2*L
Use P=2W+2L=80, substitute W in the perimeter formula
2(10+2L)+2L=80 and solve for L,
20+4L+2L=80 isolate variable L and combine like terms,
6L=80-20,
L=10, so W=10+2*10=10+20=30
Answer:
A. The volume is the product of the area of the base, 5x(x + 3), and
the height, 2x - 1.
Step-by-step explanation:
Volume is defined as the product of the Length, Width, and Height,
V = L*W*H
The Length x Width is the <u>Area of the Base</u>
<u></u>
L*W = Area Base)
Therefore:
The (L*W) in the equation V = L*W*H can be replaced with [Area of the Base]
[A<u>rea of the Base]</u>
[A<u>rea of the Base]</u> = (5x)*(x+3) [(or 5x^2 + 15x)]
Volume = [A<u>rea of the Base]</u>*H
Volume = [(5x)*(x+3)<u>]</u>*(2x-1)
The volume is the product of the area of the base, 5x(x + 3), and
the height, 2x - 1.
That looks a lot like the answer in A: "The volume is the product of the area of the base, 5x(x + 3), and the height, 2x - 1."
<u></u>
A/5+3=8
a+15=40
a=25
3b/7-1=5
3b-7=35
3b=42
b=14
Answer:
Pat would be 32 and Patrick will be 9 before the 5 years
Step-by-step explanation:
pat is older by 23
in 5 years the dad will be 28 years older than his son and 28 x 1/2 = 14
so the son will be 14 in 5 years so he would be 9 now making the dad 23 years older the dad would be 32
Answer:
Step-by-step explanation:
Remark
If this compounds, it means that the interest of the second year has the interest of the first year added to the principle. So if you gain 50 dollars as interest in the first year and the base amount was 1000 dollars, the second year will be taken as 1050 and you will find the interest on that.
Formula
Your formula should be A = P(1 + r)^t
Givens
- A = ??
- P = 165,000
- r = 8% = 8/100 = 0.08
- t = 3 years
Solution
- A = 165000*(1 + 0.08)^3
- A = 165000*(1.08)^3
- A = 165000*1.259712
- A = $207852
Answer: A
<em><u>Problem 2</u></em>
Givens
- P = 5000
- i = 17% = 17/100 = 0.17
- t = 15 years
- A = ?
Formula
A = P (1 + r)*t This is not compounded
Solution
A = 5000*(1 + 0.17)*15
A = [5000*1.17]*15
A = 5850 * 15
A = $87750
Answer C
