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2 years ago

1. Evaluate: 2 + x - 2(8) for x = 9

Mathematics

2 answers:

Oduvanchick [21]2 years ago

6 0

Answer:

-5

Step-by-step explanation:

2+9-2(8)

11-16

grin007 [14]2 years ago

5 0

Answer:

-5

Step-by-step explanation:

2+9-16(got it 2 x 8)

So the answer -5

im sorry if the answer was wrong

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What is the volume of a hemisphere with a radius of 2.3m round to the nearest tenth of a cubic meter

kodGreya [7K]

Answer: $25.5 m^{3}$

Step-by-step explanation:

If the volume of a sphere is

$V=\frac{4}{3} \pi r^{3}$

Where $r=2.3 m$ is the radius

The volume of a hemisphere is half the volume of the total sphere:

$V_{hemisphere}=\frac{V}{2}=\frac{\frac{4}{3} \pi r^{3}}{2}$

$V_{hemisphere}=\frac{2}{3} \pi r^{3}$

Solving this equation:

$V_{hemisphere}=\frac{2}{3} \pi (2.3 m)^{3}$

Finally:

$V_{hemisphere}=25.48m^{3} \approx 25.5 m^{3}$

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2 years ago

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saveliy_v [14]

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2 years ago

Find the x- and y-intercepts of the graph of the equation y = x2 – 2.

sertanlavr [38]

Answer:

See below ~

Step-by-step explanation:

X-intercept(s) : Take y = 0

0 = x² - 2
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1 year ago

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Step-by-step explanation:

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3 years ago

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