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3 years ago

2,094,300 / 10^2 Does anyone know this

2 answers:

8 0

I'm pretty positive you just divide 2,094,300 / 100 which equals 20,943. If you have any further questions just ask.

I hope this helps:)

pychu [463]3 years ago

7 0

20,943 is the answer
can you make me branliest?

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The expression 2.85+2.70M gives the taxi fare in dollars for a trip of M miles. On Thursday you got a find Miss Hearst took a ta

horrorfan [7]

Answer:

Total fair of the two trips was $32.7

Explanation:

We are given that the expression that taxi fair is:

2.85 + 2.7M where M represents the number of miles

1- For Thursday:

Number of miles covered = M = 6 miles

Substitute with M=6 in the given equation to get the fair on Thursday as follows:

Fair on Thursday = 2.85 + 2.7(6) = $19.05

2- For Friday:

Number of miles covered = M = 4 miles

Substitute with M=4 in the given equation to get the fair on Friday as follows:

Fair on Friday = 2.85 + 2.7(4) = $13.65

3- The total fair:

Total fair = fair on Thursday + fair on Friday

Total fair = 19.05 + 13.65 = $32.7

Hope this helps :)

4 0

3 years ago

Mary wants to make 20 gallons of a 52% acid solution by mixing together a 84% acid solution and a 4% acid solution. How much of

Setler [38]

Answer:

12 gallons 84%
8 gallons 4%

Step-by-step explanation:

I like to use an "X-diagram" to solve mixture problems. On the left side are the constituents of the mix; in the middle is the result of the mix; and on the right side are the differences between the numbers on each diagonal. These differences are the ratio numbers for the mix.

Here, that means the ratio of 84% solution to 4% solution is ...

48 : 32 = 12 : 8

Note that the last two "ratio numbers" were chosen so their sum is 20, hence they represent the number of gallons of the corresponding constituent in the mix. (The sum of the first two ratio numbers is 48+32=80, so to get a sum of 20, we divide each by 4.)

Mary must use ...

12 gallons of 84% acid solution
8 gallons of 4% acid solution

You may note that this solution takes much longer to explain than to do. The math here can all be done without a calculator.

_____

Check

12 × 84% + 8 × 4% = 10.40 = 20 × 52%

_____

Usual Solution

A more conventional approach would be to assign x to the amount of 84% solution needed. Then the number of gallons of acid in the mix is ...

0.84x + 0.04(20 -x) = 0.52(20)

0.80x + 0.8 = 10.4 . . . . simplify

0.80x = 9.6 . . . . . . . . . . subtract 0.8; next, divide by 0.8

x = 9.6/0.8 = 12 . . . . gallons of 84% acid

20-x = 8 . . . . . . . . . . gallons of 4% acid

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3 years ago

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Dmitriy789 [7]

Centimeters because it's smaller

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Oksanka [162]

Answer:

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