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2 years ago

The length of a rectangle is four times it width. If the perimeter of the rectangle is 70 ft, find its length and width

Mathematics

1 answer:

mojhsa [17]2 years ago

7 0

Answer:

length= 4w

width= w

perimeter= 2(l+w)

70= 2(4w+w)

70=8w+2w

70=10w

10. 10.

w= 7ft

l= 7×2

=56

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Write a simplified polynomial expression in standard form to represent the area of the rectangle below.

Stells [14]

Answer:

$5x^{2} -18x-8$

Step-by-step explanation:

The formula for area of a rectange is lw, where l is length and w is width. Since x-4 and 5x+2 are the sides, we can multiply them together to give us the area. We do (x-4)(5x+2). We use the FOIL method (First Outside Inside Last) and get 5x^2-18x-8.

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2 years ago

What is the product? (6r − 1)(−8r − 3)

xxMikexx [17]

-2r - x - 3 ............

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2 years ago

Read 2 more answers

Select ALL the correct answers.

shepuryov [24]

When a quadrilateral is inscribed in a circle, the opposite angles are supplementary

The description of the angles in the quadrilaterals are:

b. m∠M = 55°, m∠J = 48°, and m∠L = 132°
d. m∠L = 40°, m∠M = 60°, and m∠K = 120°
e. m∠K = 72°, m∠L = 44°, and m∠M = 108°
f. m∠J = 105°, m∠K = 65°, and m∠L = 75°

<h3>How to describe the angles</h3>

The quadrilateral is given as: JKLM

The opposite angles are:

Angles J and L
Angles K and M

The opposite angles are supplementary

So, we have:

$J + L = 180$

$K + M = 180$

Next, we test the options

Option (a)

$J + L = 180$

$125 + 35 = 160$

This is not true

Option (b)

$J + L = 180$

$48 + 132 =180$

This is true

Option (c)

$K + M = 180$

$12 + 78 = 180$

This is not true

Option (d)

$K + M = 180$

$120 + 60 = 180$

This is true

Option (e)

$K + M = 180$

$72 + 108= 180$

This is true

Option (f)

$J + L = 180$

$105 + 75 = 180$

This true

Hence, the description of the angles in the quadrilaterals are (b), (d), (e) and (f)

Read more about inscribed quadrilaterals at:

brainly.com/question/26690979

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2 years ago

According to the rules of significant figures 1.25*200=300 will give brainliest pls

charle [14.2K]

Answer:

It's false

Step-by-step explanation:

1.25*200=250 not 300.

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2 years ago

2(n - 1) + 4n = 2(3n - 1)

Sloan [31]

2(n - 1) + 4n = 2(3n - 1)
2n - 2 + 4n = 6n -2
6n - 2 = 6n - 2 (equal)
6n - 6n = 2 - 2
0 = 0

whatever value you put into the place of n, you'll get 0 = 0

3 0

2 years ago