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Elena-2011 [213]
2 years ago
8

HELP

Mathematics
1 answer:
Inga [223]2 years ago
7 0

Answer:

3.75 quarts, rounded to 3.8 quarts

Step-by-step explanation:

3 quarts of solution is 10% antifreeze, so 0.3 quarts are already antifreeze, and 2.7 quarts are not.

a(the antifreeze we already have)+x(what we're going to add)= 1.5*2.7

Let me explain. If we have 60% antifreeze, 40% is not. 60/40=1.5

Substitute a for 0.3

0.3+x=4.05  Subtract 0.3 from both sides

x=3.75

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3 years ago
14. Find the Error Hiroshi is determining -42 – (-37). Find his
vaieri [72.5K]

Answer:

Hiroshi's error was not having changed the sign of the number 37 by removing the parentheses and placing -37 instead of +37.

Step-by-step explanation:

we have

Hiroshi's work

42-(-37)=42-37=5

Remember that

a negative number is just a positive number multiplied by -1

and (-1)(-1)=+1

so

Correct work

42-(-37)

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42-(1)(-1)(37)

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therefore

Hiroshi's error was not having changed the sign of the number 37 by removing the parentheses and placing -37 instead of +37.

3 0
3 years ago
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yaroslaw [1]
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8 0
3 years ago
Use distributive property 5(6+b) *<br> Your answer
EleoNora [17]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
Yep here we go again:
Shtirlitz [24]

Answer:

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hope it helps u

5 0
3 years ago
Read 2 more answers
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