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dangina [55]
3 years ago
8

Solve for brainliest

Mathematics
1 answer:
Evgesh-ka [11]3 years ago
3 0

Answer:

7) 9.135x10^10

8) 3.428x10^-2

9) 2.5x10^-7

10) 4x10^10

Step-by-step explanation:

You’re only supposed to have one number to the left of the decimal point in scientific notation.

7) 9.135x10^10

8) 3.428x10^-2

9) 2.5x10^-7

10) 4x10^10

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The sum of two numbers is –40. One number
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Answer:

-27 + -13 = -40

Step-by-step explanation:

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3 years ago
Determine the domain of the function. <br><br> f(x)= sqrt of 7+x
Nezavi [6.7K]

Answer:

Df=[-7,∞)

Step-by-step explanation:

4 0
3 years ago
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Ruby started off her savings account with $100, and $0 in her checking account. She made $95 washing dishes and deposited it int
jarptica [38.1K]

Answer:

150+93=241

Step-by-step explanation:

I'm not sure if this is correct but i guess because she got 95 and deposited it into her checking she has 95 and judging on if she spent 2 dollars from her savings or checking i assumed it was savings which leaves it with 148 from 100 after depositing 50 - 2 = 148 so basically

edit: nvm i saw the note now im sure but something i dont understand is that if she made 95 how come the answer choices dont say 93 in checking so im guessing you meant 150+43=193

193 is your answer sorry lol took me a while to work this out or Answer choice C

5 0
3 years ago
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Three out of seven students in the cafeteria line are chosen to answer survey questions. How many different combinations of thre
Hatshy [7]

Answer:

35 possible combinations would be there.

Step-by-step explanation:

We have total of seven students we have to choose three out of those seven

^{n}C_r=\frac{n!}{r!\cdot (n-r)!}

n is the total possibilities n =7 in the given case

And r is the chosen ones

Hence, r=3 in the given case.

Substituting the values of n and r in the formula we get

^{7}C_3

\frac{7!}{3!(7-3)!}

\frac{7!}{3!\cdot 4!}

Using n!=n(n-1)----1

\frac{7\cdot 6\cdot 5\cdot 4!}{3\cdot 2\cdot 1\cdot 4!}

Cancel the  common factor we get

35  possible combinations would be there.

8 0
3 years ago
If f(x)=3/x+2- sqrt x-3 f(7)=?
Dovator [93]

To get the answer, you need to solve the equation for x = 7.

f(7) = 3/7 + 2 - sqrt(7) - 3.

= 3/7 - 1 - sqrt(7).

If you need to simplify it further:

= -4/7 - sqrt(7).

If you need it in decimal form:  = -3.2171798824

7 0
4 years ago
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