All categories

3 years ago

Given area of a rectangle: 7x^2+57x+8 Find Perimeter:

Mathematics

1 answer:

Sever21 [200]3 years ago

3 0

Answer:

Perimeter of the rectangle is 16x+18 units.

Step-by-step explanation:

The area of rectangle is

$7x^2+57x+8$

First we have to find the factor form of above expression.

Splitting the middle term, we get

$7x^2+56x+x+8$

$7x(x+8)+1(x+8)$

$(x+8)(7x+1)$

Area of a rectangle is the product of its dimensions. It means dimensions of the rectangle are (x+8) and (7x+1).

Perimeter of a rectangle is

$Perimeter=2(l+b)$

$Perimeter=2[(x+8)+(7x+1)]$

$Perimeter=2[8x+9]$

$Perimeter=16x+18$

Therefore, the perimeter of the rectangle is 16x+18 units.

You might be interested in

Find the factors of 9q²-45pq+8q-40p

Elina [12.6K]

Answer:

(x−5y)(9x+8)

Step-by-step explanation:

9x^2−45yx+8x−40y

Do the grouping 9x^2−45yx+8x−40y=(9x^2−45yx)+(8x−40y), and factor out 9x in the first and 8 in the second group.

9x(x−5y)+8(x−5y)

Factor out common term x−5y by using distributive property.

(x−5y)(9x+8)

5 0

3 years ago

you were overcharged $4.52 on your cellphone bill 3 months in a row the cell phone company says that it will add -$4.52 to your

babymother [125]

im pretty sure the last bill you would have been $13.52. but i could be wrong

5 0

3 years ago

*see attached image*

Leni [432]

Answer:

Sin, Cos, Tan and others are used to calculate the ratios of the sides of a right angled triangle by taking a certain angle as the angle of reference.

On the other hand, Sin‐¹, Cos‐¹ and Tan-¹ are used to find the reference angle used to calculate the ratio of sides.

For this question,

we need to find which option should used to calculate the angle the slide makes with the vertical support.

So the option will have to be either A, C or E.

here, the base is 2.81m and hypotenuse is 3.64m.

we know, Cos = base / hypotenuse

So the angle is given by Cos-¹(2.81/3.64)

Option C

4 0

3 years ago

Read 2 more answers

Determine the simple interest when: principal: $205,435 interest rate: 2.8%, time: 15 year

Vesna [10]

Step-by-step explanation:

<h3>principle (p) = $205,435</h3><h3>rate (r) = 2.8%</h3><h3>time (t) = 15 years</h3><h3>simple interest = (p × r × t) ÷ 100</h3><h3> = (205,435 × 2.8 × 15) ÷ 100</h3><h3> = 8,628,270 ÷ 100</h3><h3> = 86282.7</h3>

<h2>MARK ME AS BRAINLIST</h2><h2>PLZ FOLLOW ME</h2>

4 0

3 years ago

A community wants to raise at least $4000 for a new skateboarding park. They have been given a $150 donation and are selling can

Zielflug [23.3K]

Answer:

150+55x=4000

Step-by-step explanation:

150+55x=4000

-150 -150

55x/55=3850/55

x=70 bags

4 0

2 years ago