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3 years ago

A store sells a note book for $3 each an does not charge

Mathematics

2 answers:

Andrej [43]3 years ago

8 0

I'm confused whats the question maybe i can help

Law Incorporation [45]3 years ago

6 0

So what your question

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PLZZ HELP STUDYING FOR A TEST PLZZ!!!! THANK YOU

kramer

Answer:

Step-by-step explanation:

First we multiply 6x5 and that equals 30

then we do the multiply (-4)^2 and that would simplify to 16

We would then have 30+16 so we add and get 46

hope this helps

4 0

2 years ago

Step 1 choices:

Julli [10]

You have to translate the triangle over to where point B is lined up with point B in the second triangle. Then you can reflect over the y-axis.
So...your answer should be...
Step 1:A.
Step 2:C.

6 0

3 years ago

Read 2 more answers

Can't remember how to solve a certain equation. Number 10!

Vikentia [17]

The answer is going to be 1 and -4 as the 2s cross divide out

6 0

3 years ago

Which expression is equivalent to d-6d-3dd−6d−3d?

Softa [21]

Answer:-8d -9dd

Step-by-step explanation:I looked it up :)I'm not good at math so yeahhh but I hope this is right but if not I'll try again

7 0

2 years ago

Weight of a rock: In a geology course, students are learning to use a balance scale to accurately weigh rocks. One student plans

statuscvo [17]

Answer:

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

Step-by-step explanation:

What is Confidence Interval?

The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.

The confidence interval is given by

$CI = \bar{x} + t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\$

Where $\bar{x}$ is the mean weight $\sigma$ is the standard deviation $t_{\alpha/2}$ is the critical value from t-table and n is the sample size.

The term $t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } )$ is known as margin of error.

As the sample size is decreased the corresponding margin of error increases which results in wider confidence interval which means smaller precision.

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

We can say with 95% confidence that the true mean weight of the rock is within the interval of (25.2, 29.1).

7 0

3 years ago