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professor190 [17]
3 years ago
15

Help, I don’t understand

Mathematics
1 answer:
galina1969 [7]3 years ago
8 0
3^(9/4)=3^(3*3/4)=(3^3)^(3/4)=27^(3/4)
27^(3/4)*x^(3/4)=(27x)^(3/4)
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Label the points, lines, and planes to show AB and line m perpendicular to each other in plane S at point B. plane S
Romashka-Z-Leto [24]

Answer:

Please fins attached the required labelled drawing

Step-by-step explanation:

The given parameters are;

1) Lines AB and m are both coplanar on plane S and are perpendicular to each other intersecting at point B

2) Plane R and plane S intersect on line p

3) Line AB and line p are perpendicular to each other and both intersect with line n at point A

6 0
3 years ago
Use the discriminant to find what type of solutions the equation has,<br> 3x^2+ 7x = 7
kherson [118]
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3 0
2 years ago
Scores for a civil service exam are normally distributed with a mean of 75 and a standard deviation of 6.5. To be eligible for c
kvasek [131]

Answer:

The lowest score you can earn and still be eligible for employment is 85.6925

Step-by-step explanation:

Problems of normally distributed samples can be solved using 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 = 75, \sigma = 6.5

Top 5%.

At least the 100-5 = 95th percentile.

The 95th percentile is X when Z has a pvalue of 0.95. So X when Z = 1.645.

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

1.645 = \frac{X - 75}{6.5}

X - 75 = 1.645*6.5

X = 85.6925

The lowest score you can earn and still be eligible for employment is 85.6925

3 0
4 years ago
Read 2 more answers
Need help with this
hjlf
Should be 49^2 = 36^2 + 25^2, or something like that.
5 0
3 years ago
Suzanne bought 50 apples at the orchard. She bought 4 times as many red apples as green apples. How many more red apples than gr
Kipish [7]

Step-by-step explanation:

Let x be the number of Green apples bought.

Then 4x is the number of Red apples bought.

We have x + 4x = 50, so x = 10.

Since there are 10 green and 40 red apples, 40 - 10 = 30 more red apples than green apples.

5 0
3 years ago
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