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Andreyy89
3 years ago
11

Select the equations of the lines that are parallel to the line whose equation is y = 3x + 5:

Mathematics
1 answer:
ElenaW [278]3 years ago
4 0

Answer:

-3x+y=8 and 3y=8

Step-by-step explanation:

-3x+y=8

+3x +3x

y=3x+8

3y=9x

Divide 3 on both sides to get y by itself.

The answer is y=3x

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This composite shape is a rectangle with a semicircle attached on one end. The diameter of the semicircle is 6 feet.
Ugo [173]

As we can see on the picture we have a rectangle and half of circle.

The areas for half circle and rectangle are:

A_{rectangle}=a\cdot b \\A_{halfcircle}=\frac{A_{circle}}{2}=\frac{\pi r^2}{2}

The area of the figure is the sum of the area of half circle and rectangle. Also the height of a rectangle (6ft) is a diameter of a half circle therefore the radius of half circle is 6ft ÷ 2 = 3ft.

Now we calculate the areas.

A_{rectangle}=10\cdot 6=\underline{60} \\A_{halfcircle}=\frac{3.14\cdot3^2}{2}=\underline{14.13} \\A_{total}=A_{rectangle}+A_{halfcircle} =60+14.13=\boxed{74.13\approx74}

The area of the figure is approximately 74ft squared.

Hope this helps.

r3t40

3 0
3 years ago
Read 2 more answers
A cylinder has a base diameter of 12in and a height of 17in. What is its volume in cubic in, to the nearest tenths place?
Anna35 [415]

Answer:

1922.7 cubic inches

Step-by-step explanation:

The volume of a cylinder can be found with this formula:

V=πr^2h

The radius, r, is half the diameter.

So, 12/2=6

r=6 inches

Then, just plug the numbers in.

V=π(6)^2(17)

V=1922.65

Rounding to the nearest tenth:

V=1922.7 cubic inches

3 0
2 years ago
What is the approximate percent decrease from 1,865 to 1,240?
bearhunter [10]

Answer: 33.5

Step-by-step explanation: this question is on brainly lol but nobody explained it

1865 - 1240 = 625

Divide 625 by 1865 (626 goes first)

The answer is 0.335 move the decimal 2x forward

33.5

4 0
3 years ago
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Use your calculator to find the approximate volume in cubic units of the solid created when the region under the curve y = sin(x
kykrilka [37]

Answer:

womks,

Step-by-step explanation:

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5 0
2 years ago
Find the slope of the line that contains <br>(0,4). <br>(5,0)​
stich3 [128]

Answer:   -4/5

Step-by-step explanation:

you can use slope formula to solve this question. (Y1-Y2)/(X1-X2). So the answer to this question should be (0-4)/(5-0)=  -4/5

8 0
3 years ago
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