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kondaur [170]
3 years ago
6

Plz help ASAP

Mathematics
1 answer:
DENIUS [597]3 years ago
4 0
A+c = 150
10.25a+7.75c = 1470
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What is the slope of a line that is parallel to the line y = 3/4 + 2?
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3/4 because it’s parallel so it has the same slope. It just doesn’t pass through the same line.
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You are working on a proof. You know that A and B are on the perpendicular bisector of CD. What can you conclude? A) AC = BD B)
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3 years ago
A rectangle has a perimeter of 30 ft. Find a function that models its area A in terms of the length x of one of its sides. What
Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

Let the other side of the rectangle be y. The perimeter of the rectangle is expressed as P = 2(x+y)

Given P = 30ft, on substituting P = 30 into the expression;

30 = 2(x+y)

x+y = 15

y = 15-x

Also since the area of the rectangle is xy;

A = xy

Substitute y = 15-x into the area;

A = x(15-x)

A = 15x-x²

The function that models its area A in terms of the length x of one of its sides is A = 15x-x²

The side of length x yields the greatest area when dA/dx = 0

dA/dx = 15-2x

15-2x = 0

-2x = -15

x = -15/-2

x = 7.5 ft

Hence the side length, x that yields the greatest area is 7.5ft.

Since y = 15-x

y = 15-7.5

y = 7.5

Area of the rectangle = 7.5*7.5

Area of the rectangle = 56.25ft²

6 0
3 years ago
If a sector of a circle has a radius of 15m and an arc length of 25 meters, find the central
ozzi

Answer:

25

Step-by-step explanation:

5 0
2 years ago
A person is walking at a rate of 9 feet every 4 seconds.(b) Given the rate in (a), how far would this
Crank

Answer:

2.25 feet

31.5 feet

Step-by-step explanation:

Given that the person travels 9 feet every 4 seconds, it means that in one second, the distance walked

= 9/4

= 2.25 feet

If the person walks 2.25 feet in a second then in 14 seconds, the distance walked

= 2.25*14/1

= 31.5 feet

8 0
3 years ago
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