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7nadin3 [17]
3 years ago
10

×

Mathematics
1 answer:
Elza [17]3 years ago
5 0

Joan worked 22 hours, and Erin worked 11 hours. All together (including Sara's hours) they worked 61 hours.

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2/3 time g equals 45<br><br> What does g equal
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Answer:

g=7.5

Step-by-step explanation:

2/3g=45

divide both sides by 2/3

g=7.5

or

g=7 1/2

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Neil is a drummer who purchases his drumsticks online. When practicing with the newest pair, he notices they feel heavier than u
Fynjy0 [20]

Answer:

The probability of the stick's weight being 2.33 oz or greater is 0.0041 or 0.41%.

Step-by-step explanation:

Given:

Weight of a given sample (x) = 2.33 oz

Mean weight (μ) = 1.75 oz

Standard deviation (σ) = 0.22 oz

The distribution is normal distribution.

So, first, we will find the z-score of the distribution using the formula:

z=\frac{x-\mu}{\sigma}

Plug in the values and solve for 'z'. This gives,

z=\frac{2.33-1.75}{0.22}=2.64

So, the z-score of the distribution is 2.64.

Now, we need the probability P(x\geq 2.33 )=P(z\geq  2.64).

From the normal distribution table for z-score equal to 2.64, the value of the probability is 0.9959. This is the area to the left of the curve or less than z-score value.

But, we need area more than the z-score value. So, the area is:

P(z\geq  2.64)=1-0.9959=0.0041=0.41\%

Therefore, the probability of the stick's weight being 2.33 oz or greater is 0.0041 or 0.41%.

5 0
2 years ago
Y=2x-pq rearrange the formula to make x the subject
professor190 [17]
Y=2x-pq
2x=y+pq
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