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MArishka [77]
3 years ago
15

A small painting has an area of 400 cm^2. The length is 4 more than twice the width. Find the dimensions of the pool. Solve by c

ompleting the square. Round answers to the nearest tenth.
Mathematics
1 answer:
anygoal [31]3 years ago
6 0
A = l*w
l = 2w + 4
400 = (2w + 4)*w
0 = 2w^2 + 4w - 400

Then use the quadratic equation where a=2, b=4, and c=-400.

w = <span>13.2
l = 30.4
</span>


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the relationship between money earned and hours worked is linear. joe computes the slope between (4, 30) and (12, 90), then comp
julia-pushkina [17]
Slope = rise/run =[y2-y1]/[x2-x1]

1) slope = [90 - 30] / [12 - 4] = 60 / 8 = 15/2

2) slope = [75 - 30] / [10 - 4] = 45 / 6 = 15 / 2

The slopps are equal.
6 0
3 years ago
Read 2 more answers
Need help asap pls :)
pogonyaev

Answer:

See explanation below.

Step-by-step explanation:

First I'm going to find angle 2. Angle two plus 55 is equal to 115. 180-115=65. 65-55=10 Angle 2 = 10

Next, we can find angle 3. 55+10=65. 180-65=115. Angle 3 = 115

Angle 2 is equal to angle 5, angle 3 is equal to angle 6, and angle 4 is equal to 55.

Angle 5 = 10

Angle 4 = 55

Angle 6 = 115

Now we can find angle 8. 180-115=65. Angle 8 = 65

Angle 11 = 65

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2 years ago
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Alja [10]

Answer:

<em><u>2x – 1 = 17</u></em>

Explanation:

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3 0
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user100 [1]
Just add 3 to both sides
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4 0
3 years ago
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Determine the y-intercept of the line that passes through (-5,-12) and has a slope of -5
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Answer:

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Step-by-step explanation:

Not sure what the method is called, but you do this.

substitute the slope into slope formula

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substitute the points you have for x and y

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-12= 25+b

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6 0
3 years ago
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