Enter a number.

Answer:

**Answer:**

8.8

**Step-by-step explanation:**

speed=distance/time

speed- ?

distance- 200m

time- 22.75s

?=200/22.75

?= 8.791...

round it so that it becomes 8.8

What is the answer to this, please?

Of interest is whether the percent of managers at High Tech Inc. that pay over $8 per day for lunch is the same as the percent of technicians. Sixty managers are surveyed and forty-six of them pay over $8 per day for lunch. One hundred forty-nine technicians are surveyed and ninety-eight of them pay over $8 per day for lunch. The hypothesis test to use is Group of answer choices matched or paired samples two proportions independent group means, population standard deviations unknown independent group means, population standard deviations known.

Niccola travels at an average speed of 40 mph for 50 miles.Without stopping, Niccola then travels 60 miles in 1.75 hours.Find her average speed for the entire journey to 2 dp.

Find an equation of the circle that satisfies the given conditions. (Give your answer in terms of x and y.)Center(4, −5)and passes through(7, 4)

-68 divided (-4)Help ASAP

Of interest is whether the percent of managers at High Tech Inc. that pay over $8 per day for lunch is the same as the percent of technicians. Sixty managers are surveyed and forty-six of them pay over $8 per day for lunch. One hundred forty-nine technicians are surveyed and ninety-eight of them pay over $8 per day for lunch. The hypothesis test to use is Group of answer choices matched or paired samples two proportions independent group means, population standard deviations unknown independent group means, population standard deviations known.

Niccola travels at an average speed of 40 mph for 50 miles.Without stopping, Niccola then travels 60 miles in 1.75 hours.Find her average speed for the entire journey to 2 dp.

Find an equation of the circle that satisfies the given conditions. (Give your answer in terms of x and y.)Center(4, −5)and passes through(7, 4)

-68 divided (-4)Help ASAP

-16 because you need to subtract -4 from -12

9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds.

If Alpha = 0.05,

1. What is the critical t-value?

2. What is the decision for a statistically significant change in average weights at birth at the 5% level of significance?

**Answer:**

1. Critical value t=±2.447

2. The null hypothesis is failed to be rejected.

At a significance level of 0.05, there is not enough evidence to support the claim that the birth weight significantly differs from 6.6 lbs.

**Step-by-step explanation:**

This is a hypothesis test for the population mean.

The claim is that the birth weight significantly differs from 6.6 lbs.

Then, the null and alternative hypothesis are:

The significance level is 0.05.

The sample has a size n=7.

The sample mean is M=7.56.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=1.18.

The estimated standard error of the mean is computed using the formula:

Then, we can calculate the t-statistic as:

The degrees of freedom for this sample size are:

For a two-tailed test with 5% level of significance and 6 degrees of freedom, the critical value for t is ±2.447.

As the test statistic t=2.152 is under 2.447 and over -2.447, it falls in the acceptance region, so the effect is not significant. The null hypothesis is failed to be rejected.

At a significance level of 0.05, there is not enough evidence to support the claim that the birth weight significantly differs from 6.6 lbs.

*Sample mean and standard deviation calculations:*

**Answer:**

a. As given in the question, some towns are located high in the Rockies above the sea level and some are located in the south-central valley of the California below the sea level as well. The meaningful zero does not exists here and the variable of interest is continuous(quantitative). Hence, the elevations can be best described as an interval data.

b. The unemployment rate can not be negative. Therefore, the meaningful zero exist here. Hence, the unemployment rate can be best described as ratio data.

**Answer:**

18

**Step-by-step explanation:**

18*5=90

18*7=126

The greatest common factor(GCF) for 90 and 126 is 18

**Answer:**

**m < B = 55° **

**Step-by-step explanation:**

The** exterior angle of a triangle** is the angle formed between one side of a triangle and the extension of its adjacent side. In this given problem, the exterior angle of the Δ ABC is < C. The remote interior angles of < C are < B and < A. The sum of these two remote interior angles is equal to the m < C.

We're also given the information that m< C = 115°, m < A = 4y°, and m < B = (3y + 10)°

Therefore, to solve for the m < B, we can establish the following formula:

m < A + m < B = m < C

4y° + (3y + 10)° = 115°

4y° + 3y° + 10° = 115°

Add like terms:

7y° + 10° = 115°

Subtract 10° from both sides:

7y° + 10° - 10° = 115° - 10°

7y° = 105°

Divide both sides by 7 to solve for **y**:

7y°/7 = 105°/7

**y = 15°**

Therefore, the value of y = 15. To verify whether this is the correct value, substitute y = 15 into the equality statement:

m < A + m < B = m < C

4(15)° + [3(15) + 10]° = 115°

60° + 55° = 115°

115° = 115° (True statement, which means that y = 15 is the correct value).

Therefore, **m < B = **(3y + 10)° = **55° **

Please mark my answers as the Brainliest, if you find this solution helpful :)

**Answer:**

1

**Step-by-step explanation:**

**hi how u doin**

**Step-by-step explanation:**