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BlackZzzverrR [31]
3 years ago
6

Look at the picture. Which one is he answer?

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
6 0
A (2^2/2^-1)is the correct answer because 2^-5 * 2^8 = 8 and 2^2/2^-1 = 8.
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Simplify:<br> x2 +5x-14<br> x2+10x+21
goblinko [34]

Answer:

4x + 15x + 7

Step-by-step explanation:

x2 + x2 = 4x

5x + 10x = 15x

-14 + 21 = 7

5 0
2 years ago
Find the volume for the regular pyramid.<br><br> V =
kakasveta [241]

Answer:

Volume=\frac{16\sqrt{2} }{3}units^{3}

Step-by-step explanation:

∵ The volume of the pyramid = 1/3 base area  × height

∵ The base is equilateral Δ with side length 4

∴ The area of the bast = 1/4 × 4² × √3 = 4√3 units²

To get the height of the pyramid draw it from the vertex of the top of the pyramid ⊥ to the base on the centro-id of the base which divides the height of the triangle two ratio 2:1 from the vertex of the triangle

∵ The height of the base = √(4² - 2²) =√12 = 2√3

∴ 2/3 the height = 4√3/3 ⇒ (2:1 means 2/3 from the height)

∴ The height of the pyramid = √[4² - (4√3/3)²] = √[16 - 48/9]

∴ h = 4√2/√3 (4√6/3 in its simplest form)

∴ V = 1/3 × 4√3 × 4√2/√3 = 16√2/3 units³

∴ V = \frac{16\sqrt{2} }{3}

6 0
3 years ago
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I really need the answer to this question.
anzhelika [568]

Answer:

True

Step-by-step explanation:

It's true because you are multiplying 3 four times

7 0
3 years ago
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-2c + 3c - 5 - 4c + 7
kaheart [24]

Answer:−

3c+2

Step-by-step explanation:

6 0
3 years ago
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What is the perimeter of a polygon with vertices at (−2, 1) , ​ (−2, 4) ​, (2, 7) , ​ (6, 4) ​, and (6, 1) ​?
aniked [119]
A quick sketch of the point in a coordinate grid reveals a  3x8 rectangle with a perimeter of 22.  The distance between (-2,1) and (-2,4) is 3 and the distance between (-2, 1) and (6,1) is 8
8 0
3 years ago
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