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zvonat [6]
3 years ago
9

PLS HELP ALOT IF POINTS

Mathematics
1 answer:
Sedbober [7]3 years ago
5 0

Answer:

10x + 2.5 = 2.8

x= 2.4

Step-by-step explanation:

I think it's right but I don't know?

Sorry if it's wrong

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Josue broke a cell sample into 12 batches, each weighing 6.9 x 10 ^-10
Klio2033 [76]

Using proportions, it is found that the original sample weighed 8.28 \times 10^{-9} grams.

  • This question is solved by <em>proportions</em>, using a rule of three.
  • The weight of 1 batch, in grams, is of 6.9 \times 10^{-10}. How much do the sample of 12 batches weigh?

The rule of three is:

1 batch - 6.9 \times 10^{-10} grams.

12 batches - x grams

Applying cross multiplication:

x = 12 \times 6.9 \times 10^{-10} = 82.8 \times 10^{-10}

Applying scientific notation:

8.28 \times 10^{-9}

The original sample weighed 8.28 \times 10^{-9} grams.

You can learn more about proportions at brainly.com/question/24372153

5 0
3 years ago
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A bucket contains 5 1/2 gallons of water. Water spills from the bucket so that only 5 pints remain.
Marysya12 [62]

Answer:

  39

Step-by-step explanation:

There are 8 pints in a gallon, so 5 1/2 gallons is (5.5)(8 pints) = 44 pints.

If 5 remain, then 44-5 = 39 were spilled.

39 pints of water spilled from the bucket.

6 0
4 years ago
What is the solution to the linear equation?<br> -12 + 3b - 1 = -5 - b
alexgriva [62]

Answer:

b=2

Step-by-step explanation:

8 0
3 years ago
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30 POINTS!!!!!!
scoundrel [369]

Answer:

I think the answer is C

Step-by-step explanation:

6 0
3 years ago
HEELLPP WILL GIVE BRAINLEST TO WHOEVER ANSWERS.
nignag [31]

Answer:

B

Step-by-step explanation:

The questions says that the graph is shifted down 7 units, which means it will affect the y-intercept.

Remember: If it's shifted up, it's positive & if it's shifted down, it's negative.

4 0
2 years ago
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