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Darina [25.2K]
3 years ago
11

What is 3/8 written as decimal

Mathematics
1 answer:
valkas [14]3 years ago
8 0

Answer:

0.375

Step-by-step explanation:

You just divide 3/8 and is = to 0.375.

Hope this is what you need ;).

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A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 70% pure anti
andre [41]

Answer:

First brand of antifreeze: 21 gallons

Second brand of antifreeze: 9 gallons

Step-by-step explanation:

Let's call A the amount of  first brand of antifreeze. 20% pure antifreeze

Let's call B the amount of second brand of antifreeze. 70% pure antifreeze

The resulting mixture should have 35% pure antifreeze, and 30 gallons.

Then we know that the total amount of mixture will be:

A + B = 30

Then the total amount of pure antifreeze in the mixture will be:

0.2A + 0.7B = 0.35 * 30

0.2A + 0.7B = 10.5

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -0.7 and add it to the second equation:

-0.7A -0.7B = -0.7*30

-0.7A -0.7B = -21

-0.7A -0.7B = -21

               +

0.2A + 0.7B = 10.5

--------------------------------------

-0.5A = -10.5

A = \frac{-10.5}{-0.5}

A = 21\ gallons

We substitute the value of A into one of the two equations and solve for B.

21 + B = 30

B = 9\ gallons

3 0
2 years ago
Write the expression as a product.<br> 25-(a + 7)^2
Nastasia [14]

25 -  ({a + 7})^{2}  =

(5 + (a + 7))(5 - (a + 7)) =

(a + 12)( - a - 2)

Have a great day ♡

6 0
2 years ago
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Answer:

0.07

Step-by-step explanation:

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A copy machine can print 480 copies every 4 minutes.<br> How many copies can it print in 10 minutes?
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Step-by-step explanation:

So you need to figure out how much it can print in 1 minute. You can find that out by dividing 480 by 4. You get 120 which you then multiple by 10.

So the answer is 1,200

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A bread recipe calls for 2 teaspoons of yeast to make 1 loaf of bread. Martha wants to make 2 loaves. Should Martha calculate th
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Answer:

Martha should calculate the exact amount of yeast she will need to make the bread rise.

Step-by-step explanation:

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