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shepuryov [24]
3 years ago
9

70 POINTS PLEASE HELP!!!

Mathematics
2 answers:
Doss [256]3 years ago
4 0

Answer:

D 70

Step-by-step explanation:

3.5*20

Dima020 [189]3 years ago
3 0

Answer:

D) 70ft

Step-by-step explanation:

1 inch is 20 feet

so 3.5 inches is 3.5 times 20 = 70

hmm, did you choose 70 points because you knew the answer?  

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Can someone help me?
AfilCa [17]

Answer: 14450

Step-by-step explanation:

15% of 17000 is 2550. 17000-2550 is 14450

4 0
2 years ago
Rachael got a 550 on the analytical portion of the Graduate Record Exam (GRE). If GRE scores are normally distributed and have m
valina [46]

Answer:

Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population \mu=600

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

\mu=600 represent the population mean for the Graduate Record Exam (GRE)

\sigma=25 represent the population standard deviation for Graduate Record Exam (GRE)

2) Solution to the problem

Let X the random variable that represent the Graduate Record Exam (GRE) of a population, and for this case we know the distribution for X is given by:

X \sim N(600,25)  

Where \mu=600 and \sigma=25

We want to find the z score for a score of 550. And in order to do this we need to apply the formula for the z score given by:

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

If we apply this formula to our probability we got this:

z=\frac{550-600}{25}=-2

So the answer for our case would be Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population \mu=600

7 0
3 years ago
If a person weighs 240 pounds on Earth, what would be the difference in weight of the same person on Mars and on the Moon
vlada-n [284]
Because weight = mass x surface gravity, multiplying your weight on Earth by the numbers above will give you your weight on the surface of each planet. If you weigh 150 pounds (68 kg.) on Earth, you would weigh 351 lbs. (159 kg.) on Jupiter, 57 lbs. (26 kg.) on Mars and a mere 9 lbs. (4 kg.)
3 0
3 years ago
Read 2 more answers
What is equivalent to (x+1) (x-2)(x+4)(3x+7)
marta [7]

Answer: 6x*9

Step-by-step explanation:

open parathesises to

x+1*x-3*x+4*3x+7

combine like terms

6x*9

you can’t simplify further so bam

hope i did this right and it helps :)

8 0
3 years ago
6. Which
RSB [31]
Answer for the question is A
3 0
2 years ago
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