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3 years ago

You need 30 credits to graduate high school. If you have completed 12 credits, what percent do you have left to graduate?

Mathematics

2 answers:

IRINA_888 [86]3 years ago

6 0

Answer:

you would have 60% of credits to complete before graduation.

Step-by-step explanation:

you already have 12 credits so subtract 12 from 30

30

- 12

-------------

18

that will bring you to the number 18

18 of 30 is a 60 percentage

~hope this helped :3~

hammer [34]3 years ago

4 0

Answer:

12/30 = 40%

Step-by-step explanation:

12 divided by 30 = 40%

Give me a brainleist please

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Please Help!!!!

Iteru [2.4K]

Step-by-step explanation:

Given : m∥n , ∠1= 50° , ∠2= 48° , and line s bisects ∠ABC

To prove = ∠3= 49°

Solution:

In figure, m∥n cut by traversal t.

So, ∠DEF = ∠ABC(alternative exterior angles)

∠1 + ∠2 = ∠4 + ∠5

∠ABC = ∠1 + ∠2 = 50° + 48° = 98°

Also given that s bisect angles ∠ABC.

∠4 = ∠5

∠ABC = ∠4 + ∠5 = 98°

∠4 + ∠4 = 98°

2∠4 = 98°

∠4 = 49°

∠4= ∠3 = 49° (vertically opposite angles)

∠3 = 49° ,hence proved

5 0

3 years ago

The mean waiting time at the drive-through of a fast-food restaurant from the time the food is ordered to when it is received is

alexira [117]

Answer:

a) And if we replace we got: $\bar X= 78$

$s = 15.391$

b) $78-3.25\frac{15.391}{\sqrt{10}}=62.182$

$78-3.25\frac{15.391}{\sqrt{10}}=93.818$

So on this case the 99% confidence interval would be given by (62.182;93.818)

Step-by-step explanation:

Dataset given: 109 67 58 76 65 80 96 86 71 72

Part a

For this case we can calculate the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And if we replace we got: $\bar X= 78$

And the deviation is given by:

$s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And if we replace we got $s = 15.391$

Part b

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=10-1=9$

Since the Confidence is 0.99 or 99%, the value of $\alpha=0.01$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,9)".And we see that $t_{\alpha/2}=3.25$

Now we have everything in order to replace into formula (1):

$78-3.25\frac{15.391}{\sqrt{10}}=62.182$

$78-3.25\frac{15.391}{\sqrt{10}}=93.818$

So on this case the 99% confidence interval would be given by (62.182;93.818)

8 0

3 years ago

. Write the missing base. 9 16

chubhunter [2.5K]

Answer:

Step-by-step explanation:

ur welcome

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2 years ago

What is the area of the rectangle above?

FrozenT [24]

=13 x 6
=78 unit squares

5 0

2 years ago

Can someone help ?

andreev551 [17]

Answer:

A 234.11

Step-by-step explanation:

$= 234.11148454551 feet^{3}$ is what you get lol

8 0

2 years ago

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