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2 years ago

What does 3k-5=7k-33 equal

Mathematics

1 answer:

kramer2 years ago

3 0

Hello There

Answer: <span> k = 7

I hope this helps

-Chris</span>

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Jose makes a triangle using three sticks of lengths 20 inches, 21 inches, and 28 inches. Is the

bogdanovich [222]

Answer:

no because for right angle triangle the sum of the sq of the two smallest side is equal to the sq of biggest side

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3 years ago

An art teacher has 70 1/2 pounds of clay and 25 students. Each student will get an equal amount of clay. How much clay does each

Zigmanuir [339]

70 1/2 divided by 25

5 0

2 years ago

A dog breeder would like to know how many Dalmatian puppies are typically born in a litter. He conducts some research and select

podryga [215]

Answer:

c. 6.2 ± 2.626(0.21)

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 101 - 1 = 100

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 100 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.626

The confidence interval is:

$\overline{x} \pm M$

In which $\overline{x}$ is the sample mean while M is the margin of error.

The distribution of the number of puppies born per litter was skewed left with a mean of 6.2 puppies born per litter.

This means that $\overline{x} = 6.2$

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 2.626\frac{2.1}{\sqrt{101}} = 2.626(0.21)$

In which s is the standard deviation of the sample and n is the size of the sample.

Thus, the confidence interval is:

$\overline{x} \pm M = 6.2 \pm 2.626(0.21)$

And the correct answer is given by option c.

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2 years ago

In which number does the digit 7 have a value that is 10 times as great as the digit 7 in the number 0.9750

In-s [12.5K]

The digit 7 would be ten times greater than the digit 7 in number 0.9750 in any number with 7 in the tenths place, for example
0.723
0.7669
0.775
1.7899

7 0

2 years ago

Which represents the domain of the relation {(–1, 4), (2, –3), (0, –2), (1, –3)}?

Fantom [35]

Domain means the “input” which is like when u input a number in a vending machine and then the output is you getting the chips or whatever u got from imputing the number. So the answer would be C because is is asking for the front numbers in the relation or plots of points.

7 0

3 years ago