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2 years ago

7) 2.1x + 45.2 = 3.2 -8.4x

Mathematics

2 answers:

densk [106]2 years ago

7 0

Answer:

x=-4, Give brainliest please

Step-by-step explanation:

Step 1: Add 8.4x to both sides.

2.1x+45.2 = -8.4x +3.2

+8.4x +8.4x

10.5x+45.2=3.2

Step 2: Subtract 45.2 from both sides.

10.5x + 45.2 = 3.2

-45.2 -45.2

10.5x=−42

Step 3: Divide both sides by 10.5.

$\frac{10.5x}{10\\}$ = $\frac{-42}{10}$

x=−4

denis23 [38]2 years ago

3 0

Answer:

x=-4

Step-by-step explanation:

brainliest please

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The length of a lacrosse field is 15 yards less than twice the width, and the perimeter in 270 yards. The defensive area of the

sammy [17]

The defensive area is 510 square yards

Step-by-step explanation:

Let L be the length of the rectangle

and

W be the width

According to given statement

L = 2W-15

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$P = 2W+2L\\270 = 2W + 2(2W-15)\\270 = 2W + 4W -30\\270 +30 = 6W\\6W = 300$

Dividing both sides by 6

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We have to find the area first to find the defensive area

So,

$Area = L* W\\= 85 * 50\\=4250\ square\ yards$

Defensive area = 3/25 of total area

So,

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Hence,

The defensive area is 510 square yards

Keywords: Area, Rectangle

Learn more about area at:

#LearnwithBrainly

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3 years ago

On a graph there are two points (0,3) and (8,0) what is the proper equation

Mariana [72]

Answer:

The line equation of the line is:

$y=-\frac{3}{8}x+3$

Step-by-step explanation:

Given the two points

(0,3)

(8,0)

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$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(0,\:3\right),\:\left(x_2,\:y_2\right)=\left(8,\:0\right)$

$m=\frac{0-3}{8-0}$

$m=-\frac{3}{8}$

Therefore, the slope of the line: m = -3/8

Using the point-slope form of the line equation

$y-y_1=m\left(x-x_1\right)$

where m is the slope of the line and (x₁, y₁) is the point

substituting the values m = -3/8 and the point (0,3)

$y-3=-\frac{3}{8}\left(x-0\right)$

$y-3=-\frac{3}{8}x$

Add 3 to both sides

$y-3+3=-\frac{3}{8}x+3$

Simplify

$y=-\frac{3}{8}x+3$

Therefore, the line equation of the line is:

$y=-\frac{3}{8}x+3$

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3 years ago

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X=8
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2 years ago

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s344n2d4d5 [400]

Answer:

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Step-by-step explanation:

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To solve for the equation x/8 = 11, let's multiply each side by 8 so we can isolate the variable, x.

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Now that we've completed multiplying each side by 8, you can see that x = 88, meaning that the unknown number is 88.

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