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devlian [24]
2 years ago
12

***YOU WILL EARN 35 POINTS IF YOU ANSWER THIS ***

Mathematics
2 answers:
Lelu [443]2 years ago
7 0
Answer:I’m not sure maybe the 2nd one!:))Mahelps a lot!!
Ahat [919]2 years ago
3 0

Answer:

The answer is B. 10^3

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The radius of a solid hemisphere is 2r. Find its total surface area
Musya8 [376]

Answer:

Radius= 2r

Step-by-step explanation:

Surface area of hemisphere

=2 x 22/7 x (2r)^2

=44/7 x 4 r^2

=174/7 r^2

=25.14 r^2

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3 years ago
Find the area of a circle with a diameter of 6 cm.
IRISSAK [1]

I really need points

3 0
3 years ago
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Can someone help!! I will give brainlist
GalinKa [24]

Answer:

step-by-step explanation:

8x+2y=-22

8(0)+2y=-22

2y=-22

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8 0
3 years ago
Assume that the random variable X is normally distributed, with mean 60 and standard deviation 16. Compute the probability P(X &
elixir [45]

Answer:

P(X < 80) = 0.89435.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 60, \sigma = 16

P(X < 80)

This is the pvalue of Z when X = 80. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{80 - 60}{16}

Z = 1.25

Z = 1.25 has a pvalue of 0.89435.

So

P(X < 80) = 0.89435.

5 0
3 years ago
Solve this inequality: 3b – 7 &lt; 32
butalik [34]
It's a lot like solving equations.

3b-7 < 32
Add 7 to each side.
3b < 39
Divide by 3 on each side.
b < 13

Hope this helps :)
6 0
3 years ago
Read 2 more answers
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