3 years ago

Divide a³+8b³ by a+2b

Mathematics

1 answer:

Gre4nikov [31]3 years ago

5 0

Here you go, hope it helped you out

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A 90-inch length of ribbon is to be cut into three pieces. The longest piece is to be 30 inches longer than the shortest piece,

Free_Kalibri [48]

Lets name the shortest piece a, the medium b and the longest c

Together they are 90inches
$a + b + c = 90$
The longest is 30 inches longer than the shortest
$c = a + 30$
The third piece is half the lenght of the longest
$b = \frac{c}{2}$

So if you place c=a+30 in the other 2 equasions you get

$a + b + (a + 30) = 90 = 2a + b + 30$
And
$b = \frac{30 + a}{2}$
Now if you put this 2 toghether u get
$2a + \frac{30 + a}{2} + 30 = 90$
Multyplied by 2
$4a + 30 + a + 60 = 180$
$5a = 90$
Meaning that a=18inches

Now that we have the lenght of a we put it in the previous equasion

$b = \frac{30 + 18}{2}$
So b=48/2 which means b=24inches

And together they must be 90 so

$18 + 24 + c = 90$

C=48inches

6 0

3 years ago

Which of the following reasons helps explain why − 7/0 is not a rational number.

kvv77 [185]

Hi!

The number has a zero in the denominator.

If a number has a 0 in it's denominator, then it's not rational

Division by 0 is undefined.

Hope this helps you!

~Just a felicitous girlie

#HaveAWonderfulDay

$SilentNature$

7 0

2 years ago

Read 2 more answers

So we’re simplifying it I don’t need the answer!

RUDIKE [14]

6x+1
have a good day

7 0

3 years ago

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A pair of shoes is on sale for 15% off. With this discount, customers will save

mezya [45]

$9 is the part, 15% is the percent, and $60 is the whole

$9 is %15 of the whole. This means $9 is the part, 15% is the percent, and the whole is the total cost of the shoes after the discount. The total cost of the shoes after the discount is 60.

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3 years ago

X^2- 4x- 12 = 0 <br>Solve by factoring and solve by completing the square

DiKsa [7]

Use the formula (b/2)^2 in order to create a new term. Solve for by using this term to complete the square.

Cannot solve by completing the square.

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3 years ago

Divide a³+8b³ by a+2b​

Divide a³+8b³ by a+2b