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bagirrra123 [75]
3 years ago
13

VIOLI me eg 20(20-x) = 300 What is the value of x? Round to the units place.​

Mathematics
2 answers:
vivado [14]3 years ago
8 0

Answer:

x=5

Step-by-step explanation:

20(20-x) = 300

Divide each side by 20

20/20(20-x) = 300/20

20-x = 15

Subtract 20 from each side

20-x-20 = 15-20

-x = -5

Multiply each side by -1

x = 5

slega [8]3 years ago
4 0

Answer:

x = 5

Step-by-step explanation:

20(20-x) = 300

20( -x + 20) = 300

-20x + 20 * 20 = 300

-20x = 300 - 400

x = -100 / -20

x = 5

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I need help with this math problem.
user100 [1]
<h3>Answer: Choice B) </h3><h3>-6x - 2y = 12</h3>

===============================================

Explanation:

The x intercept is (-2,0) which is where the graph crosses the x axis.

The y intercept is (0,-6) which is where the graph crosses the y axis.

-----

Find the slope of the line through those two points

m = (y2-y1)/(x2-x1)

m = (-6-0)/(0-(-2))

m = (-6-0)/(0+2)

m = -6/2

m = -3

-----

The y intercept (0,-6) leads to b = -6

Both m = -3 and b = -6 plug into y = mx+b to get

y = mx+b

y = -3x+(-6)

y = -3x-6

-----

Now add 3x to both sides

y = -3x-6

y+3x = -3x-6+3x

3x+y = -6

-----

Lastly, multiply both sides by -2 so that the "-6" on the right hand side turns into "12" (each answer choice has 12 on the right hand side)

3x+y = -6

-2(3x+y) = -2(-6)

-2(3x)-2(y) = 12

-6x-2y = 12

which is what choice B shows.

5 0
3 years ago
How you would solve this problem. 3n=15
Sergio [31]

Answer: n=5

Step-by-step explanation: You are solving for ‘n’ so you would want to get ‘n’ by itself on one side of the equation. The easiest way to do this would be to divide both sides by 3, which would make ‘3n’ turn to ‘n’ and 15 into 5.

4 0
3 years ago
Find all values of xx where the tangent lines to y=x5y=x5 and y=x6y=x6 are parallel.
vazorg [7]
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5 0
3 years ago
Breaks down the problem and give the answer
Natalka [10]
13s=26
s=2
I think those are variables so that would be it.
5 0
3 years ago
Read 2 more answers
What is the area of the shaded portion of the circle?
iren2701 [21]

Answer:

1st option

Step-by-step explanation:

the area of the shaded portion is calculated as

area of sector - area of white Δ

area of sector = area of circle × fraction of circle

                        = πr² × \frac{90}{360} ( r is the radius )

                        = π × 8² × \frac{1}{4}

                       = 64π × \frac{1}{4}

                       = 16π in²

area of Δ = \frac{1}{2} bh ( b is the base and h the perpendicular height )

here b = h = 8

area of Δ = \frac{1}{2} × 8 × 8 = \frac{1}{2} × 64 = 32 in²

then

area of shaded portion = (16π - 32 ) in²

7 0
2 years ago
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