1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aev [14]
3 years ago
6

The ratio table shows the weights for different amounts of snow. Find the unit rate in pounds per cubic foot. Give your answer i

n decimal form.

Mathematics
2 answers:
PolarNik [594]3 years ago
6 0

The answer to your question is 8.75

kykrilka [37]3 years ago
4 0

Answer:

1.75

Step-by-step explanation:

You might be interested in
Estela and Gavin make a poster together. Estela asks Gavin to draw a quadrilateral with a 45° angle between side lengths of 5 in
Aleks [24]
Ggbccghjcdtyjbcbnjhxffcnjjj
4 0
3 years ago
Do the ratios 1:5 and 3:4 form a proportion?​
bagirrra123 [75]

Answer

no

Step-by-step explanation:

yw

3 0
3 years ago
The average Act score follows a normal distribution, with a mean of 21.1 and a standard deviation of 5.1. What is the probabilit
ohaa [14]

Answer:

0.43% probability that the mean IQ score of 50 randomly selected people will be more than 23

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question:

\mu = 21.1, \sigma = 5.1, n = 50, s = \frac{5.1}{\sqrt{50}} = 0.7212

What is the probability that the mean IQ score of 50 randomly selected people will be more than 23

This is 1 subtracted by the pvalue of Z when X = 23. So

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

By the Central Limit Theorem

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

Z = \frac{23 - 21.1}{0.7212}

Z = 2.63

Z = 2.63 has a pvalue of 0.9957

1 - 0.9957 = 0.0043

0.43% probability that the mean IQ score of 50 randomly selected people will be more than 23

5 0
3 years ago
X=5y: 2x+5y=60<br><br> A) 10,4<br> B) 15,4<br> C) 20,4<br> D) 25,4
elena-14-01-66 [18.8K]

Answer:

C) 20, 4

Step-by-step explanation:

X = 5y

2x + 5y = 60

substitute in 5y for x: 2(5y) + 5y = 60

10y + 5y = 60

15y = 60

y = 4

x = 5y

x = 5(4) = 20

3 0
2 years ago
Read 2 more answers
Last year there were 475 students at Valley Middle School. This year there are 675.
tensa zangetsu [6.8K]

Answer:

33.35% maybe

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Sarah spent a total of $7.25 on 8 apples and a packet of grapes. If a packet of grapes cost $2.85, how much did each apple cost?
    12·1 answer
  • A rectangular field that measures 32 feet by 14 feet must be increased by a
    11·1 answer
  • Please please please help me
    6·1 answer
  • Ahmed lost Rs 20 by selling a football for Rs 380. what was the loss and loss percent​
    14·1 answer
  • I and my friends can't find the answer to this and we need help pls.
    7·1 answer
  • If you try to solve a linear system by the substitution method and get the result 0 = 8, what does this mean? The system has
    12·1 answer
  • 75 is 25% more than 60, but 60 is 20% less than 75, explain why?
    9·1 answer
  • Which choice is equivalent to the product below?<br> Square root 2 • square root 3 • square root 8
    10·1 answer
  • Given m<br> n, find the value of x and y<br> m<br> (7x+18)<br> (5x-6)<br> (3y+11)<br> n
    14·1 answer
  • Help me w this math question! pleaseee
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!