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Degger [83]
3 years ago
6

Dana bikes 10 mi in 50 min. At this rate, how far can she bike in 90 min?

Mathematics
2 answers:
lara31 [8.8K]3 years ago
8 0
The answer will be 18 miles
scoray [572]3 years ago
7 0
18 miles in 90 minutes. If you think about it she's going 1 mile every 5 minutes. So if she biked 10 miles in 50 she would have hone 8 miles in 40 minutes. You now simply add 10 miles + 8 miles and you end up with 18 miles. 
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Is -2(3x-7) equivalent to 19+12x-5-6x? YES or NO???
nadezda [96]

Answer:





6. 6x-21=33+9x 7. -15x=-5(3x+7) 8. 16x-19=113-6x 9. -19x-34=56-x 10. -6(4x+3)=6(4x-3)?

6. 6x-21 = 33 +9x

+21 + 21

6x = 54 + 9x

-9x -9x

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/3 /3

x = -18

7. -15x = -5(3x+7)

First multiply the -5 to the other numbers.

-15x = -15x - 35

0x = -35

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8. 16x-19 = 113-6x

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9. -19x - 34 = 56 - x

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7 0
3 years ago
Divide x^3 -3x^2 by x-2<br> . Step 1 - Fill in the missing number:
vagabundo [1.1K]

Answer:


Step-by-step explanation:

First let us write the given polynomial as in descending powers of x with 0 coefficients for missing items

F(x) = x^3-3x^2+0x+0

We have to divide this by x-2

Leading terms in the dividend and divisor are

x^3  and x

Hence quotient I term would be x^3/x=x^2

                                                   x-2) x^3-3x^2+0x+0(x^2

x^3-2x^2

Multiply x-2 by x square and write below the term and subtract

We get  

                                                   x-2) x^3-3x^2+0x+0(x^2

x^3-2x^2

                                                         ---------------

-x^2+0x

Again take the leading terms and find quotient is –x

                                                x-2) x^3-3x^2+0x+0(x^2-x

x^3-2x^2

                                                         ---------------

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                                                                  -x^2-2x

Subtract to get 2x +0 as remainder.

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x^3-2x^2

                                                         ---------------

-x^2+0x

                                                                  -x^2+2x

                                                          -------------

                                                                      -2x-0

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                                                             ------------------

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Thus remainder is -4 and quotient is x^2-x-2


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