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2 years ago

Expand the exppresion -7(k-3)

Mathematics

2 answers:

Lana71 [14]2 years ago

8 0

Answer:

-7k+21

Step-by-step explanation:

Tanya [424]2 years ago

3 0

Answer:

-7k +21

Step-by-step explanation:

-7(k-3)

Distribute

-7*k -7*(-3)

-7k +21

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Katyanochek1 [597]

Answer: 5:-)

Step-by-step explanation:

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2 years ago

5×70=5×7 tens=_tens=_

bija089 [108]

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2 years ago

A drilling machine can drill 12 holes in 6 minutes. If the machine drills holes at a constant speed, it can drill ______ holes i

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3 years ago

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Use integration by parts to find the integrals in Exercise.<br> ∫(x+6)ex dx.

skelet666 [1.2K]

Answer:

$xe^x+5e^x$

Step-by-step explanation:

We have given integral $\int (x+6)e^xdx$

$\int (xe^x+6e^x)dx$

$\int (I_1+I_2)dx$ , here $I_1=xe^x$ and $I_2=6e^x$

Now first integrate $I_1$

So $I_1=\int xe^x$

Integrating by part

$I_1=x\int e^x-\int e^x\frac{d}{dx}x$

$I_1=x e^x- e^x$

$I_2=6\int e^x=6e^x$

So $I=I_1+I_2=xe^x-e^x+6e^x=xe^x+5e^x$

5 0

2 years ago

Sierra's ice cream shop made $45 before she had to close early when the power went out. She realized she lost Two-thirds of a do

Troyanec [42]

Answer:

the profit in the case when the shop is closed for 6 hours is $41

Step-by-step explanation:

The computation of the profit in the case when the shop is closed for 6 hours is shown below:

= Expression of the situation × number of hours in which the shop is closed

= 45 - 2 ÷ 3 × 6 hours

= $41

hence, the profit in the case when the shop is closed for 6 hours is $41

Therefore the third option is correct

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2 years ago

Read 2 more answers