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Liula [17]
2 years ago
9

Multiply the fraction and simplify the answer 2/5×5/7×1/2

Mathematics
1 answer:
beks73 [17]2 years ago
6 0
2/5 * 5/7 * 1/2                   <== Group first pair of fractions to make
                                          multiplication easier

(2/5 * 5/7) * 1/2                 <== Multiply fractions in parentheses, keeping in
  <span> (10/35) </span>                            mind all rules of fraction multiplication (i.e.
     (2/7)                              cross-multiplying, etc.)

  2/7 * 1/2                          <== Multiply remaining fractions

       1/7        

The problem simplifies to 1/7.
Hope that helped =)
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Put the following equation of a line into slope-intercept form, simplifying all fractions. 12x+10y=90
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Answer:

y=-6/5+9

Step-by-step explanation:

your going ro put it in y=mx+b format

so it would be ur equation 12x+10y=90

subtract 12x from both sides and get 10y=-12x+90

u have to get 10 by itself so you divide 10 to everything and get y=-12/10x+90/10

you have to simplify so get y=-6/5+9

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2 years ago
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Holly had $5,000 in her bank account. She withdrew $800 to buy a new bike. What is the percent decrease in the balance of her ac
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1.6% should be your answer
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In a recreation park a children's slide is 27 feet long and makes an able of 39 degrees with the ground. Its top is reached by a
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2 years ago
a coin must have diameter of 27.13 millimeters.To the nearest hundredth, what is the circumference of this coin millimeters
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A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is
anzhelika [568]
You need to solve for one variable in equation 1 and substitute it in equation 2 to solve.

Equation 1: x+y=24
x= number of 3 pt questions
y= number of 5 pt questions
24= Total number of questions

Equation 2: 3x+5y=100
100= Total point value possible on test
3x= point value of 3 pt questions
5y= point value of 5 pt questions

x+y=24
Subtract y from both sides
x=24-y

Substitute in equation 2:
3x+5y=100
3(24-y) +5y=100
72-3y+5y=100
72+2y=100
Subtract 72 from both sides
2y=28
Divide both sides by 2
y=14

Substitute y=14 back in to solve for x:
3x+5y=100
3x+5(14)=100
3x+70=100
Subtract 70 from both sides
3x=30
Divide both sides by 3
x=10

So there are 10 three point questions
There are 14 five point questions.

Hope this helped! :)
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2 years ago
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