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3 years ago

2x= 20 Choose 2 3 4 5

Mathematics

1 answer:

jasenka [17]3 years ago

5 0

The answer is 5 for your question

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Find the radius of a sphere whose surface area is 154cm².with stepss

worty [1.4K]

Answer:

THIS IS YOUR ANSWER:

$area \: of \: spere \: = 4\pi \: r {}^{2} \\ 154cm {}^{2} = 4 \times \frac{22}{7} \times r {}^{2}$

$\frac{154 \times 7}{4 \times 22} = r {}^{2} \\ r {}^{2} = 12.25 \\$

$r = \sqrt{12.25} \\ r = 3.5cm$

✍️HOPE IT HELPS YOU ✍️

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2 years ago

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HELP!!! i need the remainder as well!

denis23 [38]

ABC = 54 feet squared

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3 years ago

HELP THIS IS HARD SOMEONE pls

IrinaK [193]

Answer:

3rd option

Step-by-step explanation:

Since the centre of dilatation is at the origin then multiply the coordinates by $\frac{1}{3}$

K (- 3, 9 ) → K' (- 3( $\frac{1}{3}$ ), 9( $\frac{1}{3}$ ) ) → K' (- 1, 3 )

L (- 9, 0 ) → L' (- 9( $\frac{1}{3}$ ), 0 ( $\frac{1}{3}$ ) ) → L' (- 3, 0 )

M (2, - 8 ) → M' (2 ( $\frac{1}{3}$ ), - 8 ( $\frac{1}{3}$ ) ) → M' ( $\frac{2}{3}$ , - $\frac{8}{3}$ )

N (6, 4 ) → N' (6 ( $\frac{1}{3}$ ) , 4 ( $\frac{1}{3}$ ) ) → N' ( 2, $\frac{4}{3}$ )

7 0

3 years ago

How do you factor this polynomial expression?

alexdok [17]

$9{ x }^{ 2 }-25\\ \\ ={ 3 }^{ 2 }{ x }^{ 2 }-{ 5 }^{ 2 }\\ \\ ={ \left( 3x \right) }^{ 2 }-{ 5 }^{ 2 }\\ \\ =\left( 3x+5 \right) \left( 3x-5 \right)$

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3 years ago

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What is the equation for density? D = d = m over v. D = d = v over m. D = d = m over v squared. D = d = one-half m v squared.mv2

Sophie [7]

Answer:

d = m / v.

Step-by-step explanation:

The density is a measure of the specific weight of a substance or object.

This is, the mass per unit of volume. Then, the average density is the ratio of the mass of a body to the volume it occupies in space:

The equation for density is:

$\bar d=\dfrac{m}{V}$

being m the total mass in the volume, and V the volume.

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3 years ago

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