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lara31 [8.8K]
3 years ago
15

I NEED HELP PLEASE!!!!!

Mathematics
1 answer:
larisa86 [58]3 years ago
6 0

Answer:A sample has a density of 1.37 * 10^5 CFU/mL. Whatsample volume should yield a countable plate? Which two dilutiontube could be used to produce this sample volume? How?

Step-by-step explanation:A sample has a density of 7.9 * 10^9 CFU/mL. What samplevolume should yield a countable plate? Which two dilution tubecould be used to produce this sample volume? How?

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You leave an 22% tip on a $54 bill. How much did you pay?
notka56 [123]

Answer:

You will pay $65.88 in total

Step-by-step explanation:

Bill amount: $54
Tip: 22% = $54 * 0.22 = $11.88

Sum up: $54 + $11.88 = $65.88

6 0
2 years ago
Solve-1/8<34 then graph it
Vlada [557]

Answer:

This isn’t really a valid equation, so I’m guessing you forgot to type something.

Step-by-step explanation:

6 0
3 years ago
An investor has an account with stock from two different companies. Last year, her stock in Company A was worth $6750 and her st
pantera1 [17]

Answer:

3.5%

Step-by-step explanation:

1. calculate starting total

6750 + 4210=10960

starting amount = $10,960

2. calculate stock    A2's value

  • decreased by 18%

to make the percentage usable in this equation we need to divide it by 100 to get it in decimal form. ⇒ \frac{18}{100} = 0.18

  • multiply stock A1 by perctage decimal to get the amount decreased

6750(0.18)=1215 ($1,215)

  • subtract stock A1 by decreased amount to get stock A2's value

6750-1215=5535

A2 = $5,535

3. calculate stock    B2's value

  • increased by 20%

to make the percentage usable in this equation we need to divide it by 100 to get it in decimal form. ⇒ \frac{20}{100} = 0.20

  • multiply stock B1 by perctage decimal to get the amount increased

4210(0.20)=842 ($842)

  • add stock B1 with increased amount to get stock B2's value

4210+842=5052

B2 = $5,052

4. get new amount of account

5052+5535=10587

new amount = $10,587

5. find percentage decrease of starting amount to new amount

  • divide starting amount by the new amount

\frac{10960}{10587} = 1.03523188816

  • then subtract by 1

1.03523188816-1 =0.03523188816

  • multiply by 100 to convert to percentage form

0.03523188816(100) =3.523188816

  • and round to <u>nearest tenth</u>

answer is ≈ 3.5%

::: (\_(\ Hope

*: (=' :') this

•.. (,('')('') helped :)

4 0
2 years ago
41/x=5/2 x=____ solve for the proportion
Tatiana [17]
Start by cross multiplying:
41*2 = 5x
Simplify:
82 = 5x
Final answer:
x = 82/5 = 16.4
5 0
3 years ago
Read 2 more answers
What is the range of the exponential function f(x) = 2*+25? Check all that
Scrat [10]
C AND B If not B it was A
4 0
2 years ago
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