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elena-14-01-66 [18.8K]
3 years ago
5

Need help with 6,7,8,9,10,11,12,15

Mathematics
2 answers:
UNO [17]3 years ago
8 0
6) 1.01X10^-5
7) 6.X10^-14
8) 550000.
9) 60700000.
10) .000204
11) .000004
12) 7X10^12 is larger
Ainat [17]3 years ago
7 0

Answer:

6. 1.01 x -10^5

7. 6 x -10^14

8. 550,000

9. 60,700,000

10. 0.000204

11. 0.0004

12. 7,000,000,000,000 > 3,500,000,000

     7,000,000,000,000 (or 7 x 10^12) is greater by 2,000 times

15. 10^3 and 10^4

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Answer:

90 shoppers have cookies or fruits as their favorite snack.

Step-by-step explanation:

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1) Jo Anne needs to do a speech in her English class that can't be more than 4 minutes
djyliett [7]

Answer:

( 0 < y < 23 / 6 ) mins

Step-by-step explanation:

Solution:-

We will define a variable ( x ) as the time it took for Jo Anne to give her speech at home.

The time taken to give her speech must always be less than 4 minutes. We can express this mathematically using an inequality as follows:

                              ( 0 < x < 4 ) minutes

Jo Anne gave her speech which was 10 seconds less than the one she practised at home. We will convert the time in seconds to minutes as follows:

                             10 s * \frac{min}{60 s}  = \frac{1}{6} min

The time taken by Jo Anne to complete her speech in English class can be represented as:

                             y = x - 1/6

Using the range of time that Jo Anne could take in delivering her speech in the class would be:

                                    0 < x < 4

                            0 - 1/6 < y < 4 - 1/6

                            -1/6 < y < 23 / 6

Since time can not be less than zero. We correct the lower limit to " 0 " as follows:

                              ( 0 < y < 23 / 6 ) mins

   

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3 years ago
Two fewer than a number doubled is the same as the number decreased by 38. if n is "the number," which equation could be used to
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\displaystyle \\ &#10;\text{We use the following equation:} \\  \\ &#10; \frac{n}{2} = n - 38 \\  \\ &#10;We solve for n: \\  \\ &#10; \frac{n}{2} = n - 38 ~~\Big| \times 2 \\  \\  &#10;n = 2 \times  n - 2 \times 38 \\  \\ &#10;n = 2n - 76 \\  \\ &#10;2n - n = 76 \\  \\ &#10;\boxed{n = 76} \\  \\ &#10;\text{Verification: } \\  \\ &#10;\frac{n}{2} = n - 38 \\  \\ &#10;\frac{76}{2} = 76 - 38 \\  \\ &#10;\boxed{38 = 38  ~~~ Correct }



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