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3 years ago

Graph the line perpendicular to x = -2 that passes through ( -3, 7)

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

8 0

Answer:

The parallel line would be y = 7

Step-by-step explanation:

If a line is parallel to x = -2, then it is a horizontal line. All horizontal lines can be written in the form of y = (a number). That number can be found as the y-coordinate in the ordered pair given.

y = 7

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Which expression is equivalent to -9-(-4 1/3)

qaws [65]

Note that two negatives = one positive

- (-4 1/3) = + 4 1/3

Subtract

-9 + 4 1/3 = -4 2/3

-4 2/3 is your answer

hope this helps

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3 years ago

The average distance from the Earth to the Moon is 384400 kilometers. What is this distance written in scientific notation?

garri49 [273]

Answer:

3.844 x 10^5

Step-by-step explanation:

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2 years ago

Question 1: find the volume of a cube whose total surface area is 486cm^2

lapo4ka [179]

<h3>The volume of cube is 729 cubic centimeter</h3>

Solution:

The surface area of cube is given as:

$Surface\ area = 6a^2$

Where, "a" is the length of side of cube

Given that, surface area = 486 square centimeter

$486 = 6a^2\\\\a^2 = \frac{486}{6}\\\\a^2 = 81\\\\a = 9$

Find the volume of cube:

$volume\ of\ cube = a^3\\\\volume\ of\ cube = 9^3\\\\volume\ of\ cube = 9 \times 9 \times 9\\\\volume\ of\ cube = 729$

Thus volume of cube is 729 cubic centimeter

8 0

2 years ago

The traffic fine for speeding in a school zone in one town is $20 plus $6 for every mile per hour above the speed limit that the

sasho [114]

>. $20 + (4 x $6)
>. $20 + $24

= $44

4 0

3 years ago

What is the area of a sector with a central angle of 108 degrees and a diameter of 21.2 cm?

Rasek [7]

Answer:

$105.84\ cm^2$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

$r=21.2/2=10.6\ cm$ ----> the radius is half the diameter

substitute

$A=\pi (10.6)^{2}$

$A=112.36\pi\ cm^2$

step 2

Find the area of a sector

Remember that

The area of the circle subtends a central angle of 360 degrees

using proportion

Find out the area of a sector with a central angle of 108 degrees

$\frac{112.36\pi}{360^o}=\frac{x}{108^o}\\\\x=112.36\pi(108)/360\\\\x=33.708\pi\ cm^2$

assume

$\pi=3.14$

substitute

$33.708(3.14)=105.84\ cm^2$

7 0

3 years ago