Answer:
height=100feet
Step-by-step explanation:
perimeter of a rectangle=p=500 feet
p=2a+2b equation 1
a=height
b=base
we have: b/a=3/2
so a=(2*b)/3
in equation 1 we have:
500=2*((2*b)/3)+2*b
so we have
500=(4*b)/3 + 2*b
500=(4b+6b)/3
500=(10b)/3
500*3=10b
b=(500*3)/10
b=150 feet =base
so
a=(2*150)/3=100 feet = height
Answer:
8%
Step-by-step explanation:
Length = 30 cm
It increases by 10 %
The increase is 30*.10 = 3
New length = old length + increase
30+3
33 cm
Width =20
It increases by 5%
The increase is 20 *.05 = 1
New width = old width + increase
=20+1
21
Old perimeter = 2(l+w) = 2(30+20) = 2(50) = 100
New perimeter = 2(l+2) = 2(33+21) =2(54) = 108
Percent increase = (new - old)/old * 100%
= (108-100)/100 * 100%
= 8/100*100%
=8%
Answer: $56.25
Step-by-step explanation:
Money: $1000
Interest: 7.5% or
There are two steps you can use to find this.
First
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To find the annual interest multiply by the rate.
We can now find how much that is per month;
per month, to find how much that is in 9 months, multiply by 9
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Second
You know 12 months is 1 year, you divide the amount of months that we're trying to calculate the interest of, by the amount of years in months; in this case, 12.
Multiply that by the interest and the total amount.
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Missing a sign before 10
Anyway
If <span>y= 7/4 x + 10
slope = 7/4 and y intercept = 10
</span>If y= 7/4 x - 10
slope = 7/4 and y intercept = -10
Looks like your answer is
<span>D.7/4; -10</span>