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3 years ago

Please help this is challenging and I need help very quickly thanks!

Mathematics

2 answers:

RoseWind [281]3 years ago

6 0

Answer:

2/3

Step-by-step explanation:

motikmotik3 years ago

6 0

Answer:

im pretty sure the slope is 1/2 or 1.5 (they're the same)

Step-by-step explanation:

Rise/run so basically how much it takes to go up and then right from (-5,-2) and (4,4) so it was 9/6 = 1/2

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To solve n+7=15 you should first

sertanlavr [38]

Answer:

Collect like terms and simplify
Subtract 7 from both sides

Step-by-step explanation:

METHOD 1

$n+7=15\\n =15-7\\n = 8$

METHOD 2

$n+7-7=15-7\\n =8$

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3 years ago

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lina2011 [118]

Answer:

3.14

Step-by-step explanation:

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A scented candle is in the shape of a cylinder that is 8 inches tall. The diameter of the candle is 3.5 inches. Find the volume

blagie [28]

To find volume you use V=πr2h
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3 years ago

(5x+1)3=15x3 que Propiedad pertenece

Aneli [31]

Answer:

Step-by-step explanation:

1) Reagrupar términos.

3(5x + 1) = 15x^3

2) Divide ambos lados por tres.

5x + 1 = 5x^3

3) Mueva todos los términos a un lado.

5x + 1 - 5x^3 = 0

4) No se encontró ninguna raíz algebraicamente. Sin embargo, las siguientes raíces se encontraron por métodos numéricos.

x=−0.878886,−0.209148,1.088033

6 0

2 years ago

From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?

Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

A delegation of 2 is selected.

Let X be the number of men selected. So, the possible values of X are 0,1,2.

$P(X=0)=\dfrac{^3C_0\times ^4C_2}{^7C_2}=\dfrac{2}{7}$

$P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}$

$P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}$

The expected number of men in the delegation is

$E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)$

$E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}$

$E(x)=\dfrac{6}{7}$

$E(x)\approx 0.86$

Therefore, the expected number of men in the delegation is 0.86.

4 0

3 years ago