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atroni [7]
3 years ago
15

Which has a value closest to 9?

Mathematics
2 answers:
Mazyrski [523]3 years ago
5 0

Answer:

Step-by-step explanation:

√81 = 9

So, √83 will be closest to 9

almond37 [142]3 years ago
4 0

Answer:

10

Step-by-step explanation:

You might be interested in
2 Points
vfiekz [6]

Answer:

$63

Step-by-step explanation:

  • Penny = $0,01
  • Nickel = $0.05
  • Dime = $0.1
  • Quarter= $0.25
  • Number of pennies = 6*50 = 300
  • Number of nickels = 5*40= 200
  • Number of dimes = 4*50= 200
  • Number of quarters = 3*40 = 120

<u>Total amount of money:</u>

  • 300*0.01+ 200*0.05 + 200*0.1 + 120*0.25 = $63
5 0
2 years ago
Read 2 more answers
Suppose that you take a sample of 250 adults. If the population proportion of adults who watch news videos is 0.58​, what is the
aliina [53]

Answer:

0.36% probability that fewer than half in your sample will watch news​ videos

Step-by-step explanation:

To solve this question, i am going to use the binomial approximation to the normal.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

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.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

n = 250, p = 0.58

So

\mu = E(X) = 250*0.58 = 145

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{250*0.58*0.42} = 7.80

If the population proportion of adults who watch news videos is 0.58​, what is the probability that fewer than half in your sample will watch news​ videos

Half: 0.5*250 = 125

Less than half is 124 or less

So this is the pvalue of Z when X = 124

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

Z = \frac{124 - 145}{7.8}

Z = -2.69

Z = -2.69 has a pvalue of 0.0036

0.36% probability that fewer than half in your sample will watch news​ videos

8 0
2 years ago
Read 2 more answers
A pound of chocolate costs 8 dollars. Ann buys p pounds. Write an equation to represent the total cost c that Ann pay
aleksandrvk [35]

Answer:

Since it is 6 dollars per pound, his total cost c is 6 times p...thus

c = 6p

Hope this helps and hopefully I can get brainliest.

5 0
3 years ago
Math again sadly i need help on
dalvyx [7]

Answer:

13x+12

Step-by-step explanation:

27x-14x=13

+12 because there is nothing else there

5 0
3 years ago
Read 2 more answers
Can someone please help me find the surface area of C before 8:30?!
avanturin [10]
There are some area calculators on google if you need but I will try work it out..... if I don’t know I won’t send another answer
4 0
3 years ago
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