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valentina_108 [34]
3 years ago
9

I really need help. Pleeease. I'm begging you!

Mathematics
1 answer:
Temka [501]3 years ago
5 0

the answer is totally numbers

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the perimeter of a rectangle swimming pool is 486 feet. The width of the pool is 35 feet less than the length. Find the length a
statuscvo [17]

Answer:

Length: 139 feet

Width: 104 feet

Step-by-step explanation:

The formula for the perimeter of a rectangle can be given by P = 2l + 2w. We are given the perimeter of the pool along with the width.

P = 486

w = l - 35

From here, all we have to do is plug back into the original formula:

486 = 2l + 2(l - 35)

Which can be further simplified as:

486 = 2l + 2l - 70

486 = 4l - 70

From here, all we have to do is add 70 to both sides of the equation and divide by four:

556 = 4l

139 = l

To make sure that this answer is accurate, we can find that the width of the rectangle should then be 104 (given by 139 - 35). All we have to do is plug back into the original equation:

P = 2l + 2w

P = 2(139) + 2(104)

P = 278 + 208

P = 486

And the substitution works, so the length of the rectangle would be 139 feet and the width would be 104 feet.

5 0
3 years ago
Read 2 more answers
1. A line passes through (9, -9) and (10,-5).
jenyasd209 [6]

Answer:

1. y+5=4x-40

2.y=4x-45

Step-by-step explanation:

To get the slope of a line you do y₂-y₁/x₂-x₁ so we plug in the values -9+5/9-10 and we get -4

Point-slope form states y-y₁=m(x-x₁) where m is the slope so plug in the values we get y+5=4(x-10) and you get y+5=4x-40 then turn this equation into y=mx+b and get y= 4x-45

5 0
3 years ago
Find the central angle measure
Mariana [72]

Answer:

76

Step-by-step explanation

The angle across from 104 would be the same Leaving 152 left of 360 and 152 divided by 2 is 76

7 0
3 years ago
Of the original 56 signers of the declaration of independence four of them are present in North Carolina if you selected one sig
kari74 [83]
The chance of you selecting one randomly is 4/56, which simplifies to 1/14.
8 0
3 years ago
Who was the first president ​
Fiesta28 [93]
The first president is George Washington
5 0
3 years ago
Read 2 more answers
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