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Aloiza [94]
3 years ago
14

Please give me the correct answers for these 4 problems :(( very easy <3

Mathematics
2 answers:
Damm [24]3 years ago
7 0
Wait? The dots mean multiplication right??
charle [14.2K]3 years ago
3 0

Answer:

1. 30

2.-8

3. 8/12

4.-1728

Step-by-step explanation:

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8) A rectangular prism has a width of 9 cm, a height of 7 cm and a depth of 2 cm. What is the
kumpel [21]

Answer:

The answer is 126 cm^{3}

Step-by-step explanation:

The formula for the volume of a rectangle is L x W x H.

So you just plug in the numbers into the formula.

2 x 9 x 7

That equals 126.

3 0
3 years ago
Simplify -4(6x - 7) – 3(4 + 2x).<br>40x - 40<br>30x + 40<br>-30X + 16<br>-40x + 16​
USPshnik [31]
-30x + 16. You use the distributive property to get -24x + 28 -12 -6x. Then combine like terms to get -30x + 16.
4 0
3 years ago
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Solve the given differential equation by undetermined coefficients. y'' 4y = 7 sin(2x)
kherson [118]

The solution to the given differential equation is yp=−14xcos(2x)

The characteristic equation for this differential equation is:

P(s)=s2+4

The roots of the characteristic equation are:

s=±2i

Therefore, the homogeneous solution is:

yh=c1sin(2x)+c2cos(2x)

Notice that the forcing function has the same angular frequency as the homogeneous solution. In this case, we have resonance. The particular solution will have the form:

yp=Axsin(2x)+Bxcos(2x)

If you take the second derivative of the equation above for  yp , and then substitute that result,  y′′p , along with equation for  yp  above, into the left-hand side of the original differential equation, and then simultaneously solve for the values of A and B that make the left-hand side of the differential equation equal to the forcing function on the right-hand side,  sin(2x) , you will find:

A=0

B=−14

Therefore,

yp=−14xcos(2x)

For more information about differential equation, visit

brainly.com/question/18760518

8 0
2 years ago
Write 6p^2 without exponents
Galina-37 [17]

Answer:

6p*6p

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
How many times bigger than 1/2 inch is 8 1/2 inches?
Burka [1]

Answer:

17 times

Step-by-step explanation:

3 0
4 years ago
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