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Tomtit [17]
3 years ago
8

So here's information before I say the question

Mathematics
1 answer:
zysi [14]3 years ago
3 0

What you have to do is multiply 21 by 2. it is 42. $42 dollars was the original price of the bookcase.

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Solve for X:
galben [10]

Answer:

A. -61/9

Step-by-step explanation:

(7x + 28) + (7x +28) = 5x - 5 . . . . . . . given equation

14x +56 = 5x -5 . . . . . . . . . . . . . . . . . collect terms

9x = -61 . . . . . . . . . . . . . . . . . . . . . . . . subtract 5x+56

x = -61/9 . . . . . . . . . . . . . . . . . . . . . . . . divide by the coefficient of x

4 0
3 years ago
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The ratio of students to adults on a field trip is 4 to 3. Which table correctly
Anit [1.1K]

Answer:

B

Step-by-step explanation:

Brainliest?

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3 years ago
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What is 24÷8 >jhhh4hg4h55h5gt5hh5
stealth61 [152]
The answer is 3

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3 years ago
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The largest of the Great Pyramids in Egypt was built with a square base, having edges that measured 754 feet and a height of 418
12345 [234]

Answer:

79,213,229 ft3

Step-by-step explanation:

The volume of a pyramid is given by the following formula:

Volume = (1/3) * B * h

Where B is the base area and h is the height.

The side of the base is 754 feet, so the base area is:

B = 754^2 = 568516 ft2

Then, the volume of the pyramid is:

Volume = (1/3) * 568516 * 418 = 79213229.33 ft3

Rounding to the nearest cubic foot, we have:

Volume = 79,213,229 ft3

3 0
3 years ago
Can someone step by step explain the answer to me please and thank u
True [87]

First

angle in front of c is 30°, so hypotenuse is equal to 2c

it's right triangle, so let's use Pythagorean theorem\

(2c)^2=c^2+4^2\\4c^2=c^2+16\\3c^2=16\\\\c^2=\dfrac{16}{3} \\\\c=\dfrac{4}{\sqrt{3} } =\dfrac{4\sqrt{3} }{3 }

Second

b - the base of the triangle, angles at the base are equal ⇒ cathets are equal

it's right triangle, so let's use Pythagorean theorem

b^2=7^2+7^2\\b^2=49+49\\b=\sqrt{2\times49} =7\sqrt{2}

3 0
2 years ago
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