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3 years ago

Free daily points I do this every day around 10:00 AM est

Mathematics

2 answers:

-BARSIC- [3]3 years ago

6 0

Answer:

thanks

Step-by-step explanation:

riadik2000 [5.3K]3 years ago

5 0

Answer:

Step-by-step explanation:

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The musical frequency of notes is decreasing between beat numbers ___ and ___

eduard

The complete question in the attached figure

we have that
between beats 2 and 3----------> (392-261.6)=130.4-------> increases
between beats 3 and 4----------> (392-392)=0-----> <span>it stays with the same value
</span>between beats 4 and 5----------> (444-392)=52--------> increases
between beats 5 and 6----------> (444-444)=0-----> it stays with the same value
between beats 6 and 7----------> (392-444)=-52-------> decreases

the answer is
between beats 6 and 7----------> (392-444)=-52-------> decreases

7 0

3 years ago

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The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes

mixer [17]

Answer:

0.02275

Step-by-step explanation:

We have been given that the time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. We are asked to find the probability of completing the exam in one hour or less.

We know that 1 hour equals 60 minutes. First of all, we will find the z-score corresponding to 60 minutes.

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

z = z-score,

x = Sample score,

$\mu$ = Mean,

$\sigma$ = Standard deviation.

$z=\frac{60-80}{10}$

$z=\frac{-20}{10}$

$z=-2$

Now, we will use normal distribution table to find area under z-score of $-2$ as:

$P(z< -2)$

$P(z< -2)=0.02275$

Therefore, the probability of completing the exam in one hour or less is 0.02275.

7 0

3 years ago

PLZ HELP ASAP RIGHT TRIANGLES

borishaifa [10]

The correct answer is: AB = 3.11

Explanation:
Since

$cos(\theta) = \frac{base}{hypotenuse}$ --- (1)
$\theta$ = 50°
base = 2

And hypotenuse = AB

Plug in the values in (1):
(1) => cos(50°) = 2/AB

=> AB = 2/0.643
=> AB = 3.11

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3 years ago

What statement about dilation and rotation is true

sergiy2304 [10]

Rotation turns dilation shrinks

5 0

3 years ago

Help me fast!!!!!!!I need to finish this by next period

klio [65]

Answer:

-2/3

Step-by-step explanation:

Rise over run! The slope rises twice and goes over 3 times. The slope is negative so put a negative sign behind it.

3 0

2 years ago

Read 2 more answers