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4 years ago

Help with 8th-grade middle school math SHOW WORK

Mathematics

2 answers:

zalisa [80]4 years ago

6 0

Answer:

Step-by-step explanation:

solong [7]4 years ago

3 0

Your answer is 40 hope this helps

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-5w = -24.5 what is it.

pav-90 [236]

Answer:

w=4.9

Step-by-step explanation:

If you are solving for w, you want to isolate the variable. If it is easier to write it out, it would look something like this..

-5 x w = -24.5

To get w by itself, use the inverse of multiplication, which is division. Divide the expression to the left of the equal sign by -5. Remember, what you do to one side, you must do to the other. When you divide -24.5 by -5, you end up with

w=4.9

6 0

3 years ago

What is the property of 21 times 9 = 9 times 21

zaharov [31]

21 x 9 = 9 x 21 is the commutative property.

6 0

3 years ago

Read 2 more answers

Elect the correct answer.

NeX [460]

The answer to this question is (A) left.

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2 years ago

The normal monthly temperatures (°F) for Omaha, Nebraska, are recorded below.

AfilCa [17]

Answer

$y = 28 \sin(\frac{\pi}{6} - \frac{2\pi}{3}) + 49$

Step by Step Explanation

Given

See attachment for table

Required

Determine the sinusoidal function

The sinusoidal function is represented as:

$y = A \sin(Bx + C) + D$

Where

$|A| = Amplitude$

And it is calculated as:

$A = \frac{1}{2}[Highest - Least]$

From the table:

Highest = 77 and Least = 21

So:

$A = \frac{1}{2}[77 - 21]$

$A = \frac{1}{2}[56]$

$A = 28$

B is calculated as:

$Period = \frac{2\pi}{B}$

The period is 12 i.e. 12 months

So:

$\frac{2\pi}{B} = 12$

$B = \frac{2\pi}{12}$

$B = \frac{\pi}{6}$

C is calculated as:

$\frac{C}{B} = -4$

$C = -4 * B$

$C = -4 * \frac{\pi}{6}$

$C = -2 * \frac{\pi}{3}$

$C = -\frac{2\pi}{3}$

Lastly, D is calculated as:

$D = Least + A$

So:

$D =21 + 28$

$D=49$

So, the function is:

$y = A \sin(Bx + C) + D$

$y = 28 \sin(\frac{\pi}{6} - \frac{2\pi}{3}) + 49$

8 0

3 years ago

jane and ken share some money in the ratio 5:3. ken's share is $16 less than jane's share. find each person's share

Vlad [161]

Answer:

10:6

Step-by-step explanation:

6 0

3 years ago