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Aleks04 [339]
3 years ago
14

By what percent change if the numerator is decreased by 10% and the denominator is decreased by 70%

Mathematics
1 answer:
hjlf3 years ago
6 0

Answer:

It increases x3.

Step-by-step explanation:

Let's say the fraction to begin with was 100/100. Ignore the fact that it isn't fully reduced and it is an improper fraction.

10% of 100 is 10, so the numerator is now 90 (decrease=get smaller; 100-10=90).

70% of 100 is 70, so the denominator is now 30 (decrease=get smaller; 100-70=30).

Our fraction is now 90/30 which, when fully reduced, equals 3.00. Since 100/100 equals 1.00, it has increased by 2.00 (3x bigger).

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pentagon [3]

Answer:

b

Step-by-step explanation:

8 0
3 years ago
If 90 is 30% of a number, what is 200% of the number.
KATRIN_1 [288]
600 becuase 90/.30= 300 and 300*2 =600
6 0
3 years ago
If the system below were written as a matrix equation, by which matrix could you multiply both sides to obtain a solution?
ludmilkaskok [199]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Below are the choices:

A. 
<span>[8 -6] </span>
<span>[-5 4] </span>
<span>B. </span>
<span>[4 -3] </span>
<span>[-2.5 2] </span>
<span>C. </span>
<span>[-4 5] </span>
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<span>D. </span>
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</span>
B because it is the inverse of 
<span>(4 6) </span>
<span>(5 8) </span>

<span>Check </span>
<span>(4.0 -3)(4 6) = (1 0) </span>
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3 0
3 years ago
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raketka [301]
The rise is 2 and the run is 3
8 0
2 years ago
Find the area of a circle with a circumference of 6.28 unitesz
Anni [7]

Answer:

3.14 square units

Step-by-step explanation:

Circumference of a circle = 2πr

2πr = 6.28

r = 6.28/2π

r = 3.142/π

Area of a circle = πr^2

slot in the value of r

Area of the circle = π( 3.142/π)^2

               "              = π(9.87/ π^2)

                "             = 9.87/π

π = 3.14

Area of a circle = 9.867/ (3.14)

              "            = 3.14 square units

                     

8 0
3 years ago
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