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wariber [46]
4 years ago
13

Helppppp plzzzzz!!!!!!

Mathematics
2 answers:
ale4655 [162]4 years ago
7 0
The answer is C. Divide 2100 by 345, then multiply the answer by 56, and round your answer; 400.
Troyanec [42]4 years ago
3 0
Hi

The answer is letter 
 C madam
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PLEASE ANSWER FIRST GETS BRAINLIEST <br> Complete the function table for each function
Bezzdna [24]

Answer + Step-by-step explanation:

For y = x - 3 points are: (0,-3) , (3,0)

For y = 2x + 1 points are (0,1) , (-\frac{1}{2},0)

For y = \frac{x}{2} - 2 points are (0,-2) , (4,0)

For y = \frac{x - 3}{3} points are (0,-1) , (3,0)

8 0
3 years ago
An office supply store sells pencils individually or by the case. Pencils purchased individually cost $0.97 each. One case of fo
AnnyKZ [126]

Answer:

$00.90

Step-by-step explanation:

If you dive the total cost of the case, $37.20, by the total number of pencils, 40, that's the answer you get.

3 0
3 years ago
Consider the probability that no less than 95 out of 152 registered voters will vote in the presidential election. Assume the pr
nikdorinn [45]

Answer:

0.3821 = 38.21% probability that no less than 95 out of 152 registered voters will vote in the presidential election.

Step-by-step explanation:

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 distributions 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)}.

Assume the probability that a given registered voter will vote in the presidential election is 61%.

This means that p = 0.61

152 registed voters:

This means that n = 152

Mean and Standard deviation:

\mu = E(X) = 152*0.61 = 92.72

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{152*0.61*0.39} = 6.01

Probability that no less than 95 out of 152 registered voters will vote in the presidential election.

This is, using continuity correction, P(X \geq 95 - 0.5) = P(X \geq 94.5), which is 1 subtracted by the pvalue of Z when X = 94.5. So

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

Z = \frac{94.5 - 92.72}{6.01}

Z = 0.3

Z = 0.3 has a pvalue of 0.6179

1 - 0.6179 = 0.3821

0.3821 = 38.21% probability that no less than 95 out of 152 registered voters will vote in the presidential election.

6 0
3 years ago
Someone please help me find y if you don’t mind Thankyouu so much
IRINA_888 [86]

Answer:

Step-by-step explanation:

Decreasing rate = 12% = 0.12

y = 2400 * (1- 0.12)^x = 2400*(0.88)^x

x = 8 years

y = 2400 *(0.88)^{8}\\\\= 2400*0.36\\\\= 863

3 0
3 years ago
the length of a rectangle is five times its width. If the perimeter of the rectangle is 120 inch find its area
telo118 [61]
5x+x=120
Width= 20
Length=100
4 0
3 years ago
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