All categories

3 years ago

Geometric proofs Can someone explain how to do number 1? It would really help

Mathematics

1 answer:

PtichkaEL [24]3 years ago

5 0

1) given
2) def of midpoint
3) substitution property of equality

You might be interested in

What is the answer to this?? I need help now! 25 pts<br> Here is attached

FromTheMoon [43]

Its too small
1 1 1 1 1 1 1 1 1 1 1

6 0

3 years ago

The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what

harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

$\mu=25,\sigma=4,x_1=20,x_2=30$

The z-score formula is given by

$z-\text{score}=\frac{x-\mu}{\sigma}$

For $x_1=20$

$z_1=\frac{20-25}{4}\\\\z_1=-1.25$

For $x_2=30$

$z_2=\frac{30-25}{4}\\\\z_2=1.25$

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

6 0

3 years ago

Read 2 more answers

What is the value of x?<br> 4x − 6 = 18

tensa zangetsu [6.8K]

You need to get rid of -6 by adding 6, you also need to add 6 to 18.

4x = 24

Now you need to get rid of the 4 attached to the variable, you do this by dividing 4 since it is multiplying, also dividing 4 and 24

x = 6

So the value of x is 6

Hope this helps! :)

8 0

3 years ago

Read 2 more answers

Marc ordered a rug he gave a deposit of 30% of the cost and will pay the rest when the rug is delivered if the deposit was $75 h

o-na [289]

Use proportion, so multiply 100 by 75, then divide it by 30 and that's your answer.....250

6 0

3 years ago

Read 2 more answers

Give an example of a benchmark fraction and an example of a mixed fraction.

34kurt

Answer: