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NikAS [45]
3 years ago
15

Is - 81526 rational

Mathematics
1 answer:
Mars2501 [29]3 years ago
6 0

Answer:

no

Step-by-step explanation:

this negative number is not rational

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If Dave drives at a steady speed of 50 mph, how long will it take him to drive 10 miles?
ira [324]
50 miles = 1 hour
10 miles = 1/50 x 10
= 1/5 hours
= 12 minutes

It will take him 12 minutes to drive 10 miles.
5 0
3 years ago
Suppose you can somehow choose two people at random who took the SAT in 2014. A reminder that scores were Normally distributed w
Sindrei [870]

Answer:

22.29% probability that both of them scored above a 1520

Step-by-step explanation:

Problems of normally distributed samples are 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 problem, we have that:

\mu = 1497, \sigma = 322

The first step to solve the question is find the probability that a student has of scoring above 1520, which is 1 subtracted by the pvalue of Z when X = 1520.

So

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

Z = \frac{1520 - 1497}{322}

Z = 0.07

Z = 0.07 has a pvalue of 0.5279

1 - 0.5279 = 0.4721

Each students has a 0.4721 probability of scoring above 1520.

What is the probability that both of them scored above a 1520?

Each students has a 0.4721 probability of scoring above 1520. So

P = 0.4721*0.4721 = 0.2229

22.29% probability that both of them scored above a 1520

8 0
2 years ago
X^2+7x-30<br> Factor the quadratic<br> Show steps
DENIUS [597]

Answer:

(−3)(+10P)

Step-by-step explanation:

in pic

(Hope this helps can I pls have brainlist (crown) ☺️)

6 0
3 years ago
Anyone can help me with problem 3?
Fudgin [204]

Answer: 1 and 3

It's because they both divide down lower than 1

6 0
3 years ago
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What is the volume of the rectangular prism 10.4mm 5mm 8mm
alina1380 [7]
The answer too this problem is 416.
7 0
3 years ago
Read 2 more answers
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