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3 years ago

Luke is swimming in still water at a constant speed of 3 meters/second.

Mathematics

1 answer:

STALIN [3.7K]3 years ago

4 0

Answer:

1. velocity

Step-by-step explanation:

that is the answer above

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Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide whether to reject H0

Leviafan [203]

Answer: We do not reject the null hypothesis.

Step-by-step explanation:

When the p-value is greater than the significance level , then we do not reject the null hypothesis or if p-value is smaller than the significance level , then we reject the null hypothesis.

Given : Test statistic : $z = -2.28$

Significance level : $\alpha=0.02$

By using the standard normal distribution table ,

The p-value corresponds to the given test statistic ( two tailed ):-

$2P(Z>|z|)=2P(Z>2.28)=0.0226$

Since the p-value is greater than the significance level of 0.02.

Then , we do not reject the null hypothesis.

8 0

3 years ago

In Mr. Scott’s class the ratio of boys to girls is 2:3. The total number of students in Mr. Scott’s class is 30. What percent of

Yuri [45]

Answer:

40% of the class is Girls, so 12 students are girls

Step-by-step explanation:

add up the ratio

2+3=5

divide by 5

30/5=6

multipy ratio to find totial number of students

2*6=12

2*3=18

divide the number of students to get the pecentage

12/30=0.4=40%

18/30=0.6=60%

5 0

3 years ago

Which is the correct first step for solving this equation? 2x-7=5?

scZoUnD [109]

Answer:

to get x by itself so divide 5 by 2 and then add 7 to the other side

Step-by-step explanation:

2x-7=5

x-7=2.5

x=2.5+7

x=9.5

4 0

4 years ago

Someone please answer only 6 for me I need it ASAP

aleksklad [387]

No.. because you won’t have enough

3 0

3 years ago

After the expression is simplified as much as possible, x is raised to what exponent?

vesna_86 [32]

After the expression is simplified as much as possible, x is raised to the exponent 2

8 0

3 years ago