All categories

3 years ago

Evaluate the formula for the perimeter of a rectangle to solve the problem. Then check all that apply.

Mathematics

1 answer:

natita [175]3 years ago

7 0

1. 2(8x – 1) + 2(2x + 4)

2. 16x – 2 + 4x + 8

3. (20x + 6)

Step-by-step explanation:

The perimeter of the rectangle with length 8x - 1 and width 10x + 3 is 20x + 6

The formula for calculating the perimeter of a rectangle is expressed as:

P = 2( l + w)

Given the following parameters

length l = 8x - 1

width w = 2x + 4

Substitute the expressions for the length and width into the formula;

P = 2(8x - 1 + 2x + 4)

P = 2(10x + 3)

Distribute 2 over each term in the parenthesis

P = 2(10x) + 2(3)

P = 20x + 6

Hence the perimeter of the rectangle with length 8x - 1 and width 10x + 3 is 20x + 6

if i help please give brainly

You might be interested in

William decides to complete his reading homework for the past two days. The first day he was assigned to read 10 pages and the s

romanna [79]

Too many
But maybe try Joe
Joe mama

7 0

2 years ago

What should larmont do to write a correct point slope equation for this line? <br> (-8,5) and (-5,7)

Ronch [10]

ANSWER

Therefore the correct answer is B

<u>EXPLANATION</u>

The equation in the point slope form of a straight line is given by the formula;

$y-y_1=m(x-x_1)$ , where $m$ is the slope and the point $(x_1,y_1)$ is any point on the line.

Since two points on the line are given, Lamont must find the slope using the points $(-8,5)$ and $(-5,7)$ as follows;

$m=\frac{7-5}{-5--8} =\frac{7-5}{-5+8} =\frac{2}{3}$ .

He can now choose one of the points as $(x_1,y_1)$ .

If he uses $(-8,5)$ , the he obtains,

$y-5=\frac{2}{3}(x--8)$

Which gives $y-5=\frac{2}{3}(x+8)$ as the equation of the line.

Therefore the correct answer is B

8 0

3 years ago

A rectangluar swimming pool 25 feet long, 15 feet wide, and 7 feet deep is filled with water to a depth of 6 feet. The weight de

marissa [1.9K]

9514 1404 393

Answer:

491,400 ft·lb

Step-by-step explanation:

The mass of the water is ...

M = Vρ = LWHρ = (25 ft)(15 ft)(7 ft)(62.4 lb/ft³) = 163,800 lb

The average depth is 3 ft, so the work required is equivalent to that required to raise this mass 3 ft.

W = (3 ft)(163,800 lb) = 491,400 ft·lb

6 0

3 years ago

Help me please!! Will mark brainliest

VARVARA [1.3K]

Answer:

see explanation

Step-by-step explanation:

Given

F = $\frac{9}{5}$ (K - 273.15) + 32

Multiply through by 5 to clear the fraction

5F = 9(K - 273.15) + 160 ( subtract 160 from both sides )

5F - 160 = 9(K - 273.15) ← distribute

5F - 160 = 9K - 2458.35 ( add 2458.35 to both sides )

5F + 2298.35 = 9K ( divide both sides by 9 )

K = $\frac{5F+2298.35}{9}$

(b)

When F = 180, then

K = $\frac{5(180)+2298.35}{9}$

= $\frac{900+2298.35}{9}$

= $\frac{3198.35}{9}$

≈ 355.37 ( to the nearest hundredth )

6 0

3 years ago

Tell whether the situation should be represented by a continuous graph or a discrete graph.

andre [41]

1) Discrete graph

2) Continuous graph

I hope this helps! I would check with someone else first though.

6 0

4 years ago