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koban [17]
3 years ago
7

Which number is not in scientific notation? A. 11 times 10 to the 21st power? B. 5.7 times 10 to the 9th power? C. 3.1 times 10

to the -12th power? Or D. 1.67 times 10 to the -5th power?
Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
7 0
A. it is not in scientific notation because the number in the ones place has to be greater than 0 but less than 9. So 11 is more than 9 so A is not in scientific notation.
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Four gallons of paint are used to paint 20 chairs and 5 small tables.if each chair and table used the same amount of paint, how
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Answer:

0.16 gallons of paint are used on each piece of furniture.

The answer lies between the whole numbers 0 and 1.

Step-by-step explanation:

we know that

Four gallons of paint are used to paint 20 chairs and 5 small tables.

if each chair and table used the same amount of paint

then

sum the total pieces of furniture

20+5=25 pieces

Find the unit rate

Divide the total gallons of paint used by the total pieces

\frac{4}{25}=0.16\ \frac{gallons}{piece}

therefore

0.16 gallons of paint are used on each piece of furniture.

The answer lies between the whole numbers 0 and 1.

7 0
3 years ago
Is the solutipn shown below correct? Explain. 9x+2=8x^2+6x
marin [14]

Answer:

the answer is not correct

there is a sign error under the radical

it should be 3^2 - 4(-8)(2) = sqrt(73) not sqrt(55i)

Step-by-step explanation:

3 0
3 years ago
Sarah exchanged 1,000 US dollars for the Croatian Kuna. The exchange rate was 6.72 Kuna for $1. How many Croatian Kuna did Sarah
AlekseyPX

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6720 Kuna

Step-by-step explanation:

multiply the rate for one dollar by the amount of money your are converting

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7 0
3 years ago
PLEASE HELP❗️❗️
Alexandra [31]

Answer:

A.irrational

Step-by-step explanation:

because 9 can be square to 3 but 11 cant be squared at all.

4 0
3 years ago
How can I tell if they are none transversal?
seraphim [82]
Look at the number and see if any of the number line goes over
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