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Fittoniya [83]
3 years ago
14

Is (3,11) a solution to the equation y= 5x-4

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
3 0
Yes, because 11=5 times 3 - 4
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Mr. Kramer has 30 pencils for his class. There are 22 students in his class and he would like
saw5 [17]

Answer:

6

Step-by-step explanation:

Mr. Kramer has pencils for his class = 30

Students in his class = 22

Pencils he would like  to give each student = 2

How many more pencils does Mr. Kramer need to buy so that each student will receive 2 pencils = ?

Total pencils Mr. Kramer need to buy so that each student will receive 2 pencils = 22 × 2

            = 44

            = 44 - 30

            = 6

Mr. Kramer need to buy 6 more pencils  so that each student will receive 2 pencils

5 0
3 years ago
Lucinda leaves money in her savings account for 8 years. She started with $800 and earned 3.5% interest compound annually. How m
wariber [46]
I think she would have $1,058.07
8 0
3 years ago
in a class of 34 students 19 of them are girls what percentage of the class are girls to 1 decimal place
motikmotik

Answer:

55.9% of the class are girls

Step-by-step explanation:

19/34 = 0.559

0.559 x 100 = 55.9%

6 0
3 years ago
Read 2 more answers
A random sample of 40 binomial trials resulted in 14 successes. test the claim that the population proportion of successes does
mylen [45]

Using the z-distribution, since the p-value of the test is of 0.057 > 0.05, there is not enough evidence that the population proportion of successes does not equal 0.50.

<h3>What are the hypotheses tested?</h3>

At the null hypotheses, we test if the proportion of successes equals 0.5, hence:

H_0: p = 0.5

At the alternative hypotheses, we test if it does not equal, hence:

H_1: p \neq 0.5

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

For this problem, the parameters are given by:

n = 40, \overline{p} = \frac{14}{40} = 0.35, p = 0.5

Hence the test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = (0.35 - 0.5)/(0.5/sqrt(40))

z = -1.9.

<h3>What is the decision?</h3>

Using a z-distribution calculator, considering a two-tailed test, as we are testing if the proportion is different of a value, with z = -1.9, we get that the p-value of the test is of 0.057.

Since the p-value of the test is of 0.057 > 0.05, there is not enough evidence that the population proportion of successes does not equal 0.50.

More can be learned about the z-distribution at brainly.com/question/16313918

#SPJ4

5 0
1 year ago
Using polynomial identities, multiply the expression (2x+8y)(2x-8y)
igomit [66]
(2x)sqrt 2- 64y2 is the answer
3 0
3 years ago
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