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Lerok [7]
3 years ago
11

Rename 3/8 and 7/10 of fractions with common denominators

Mathematics
2 answers:
Ilia_Sergeevich [38]3 years ago
6 0
15/40 (3/8) 28/40 (7/10)
zmey [24]3 years ago
6 0
8 and 10 can go into 40.  1st fraction:  3 times 5 is 15 and 8 times 5 is 40 - answer is 15/40.  2nd fraction:  7 times 4 is 28 and 10 times 4 is 40- answer is 28/40
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If a varies directly as b, and a = 28 when b = 7, find b when a = 5.
Reika [66]

Answer: Option B.

b=\frac{5}{4}

Step-by-step explanation:

If a varies directly with b then when a increases b it also increases by a factor k.

Then we can write that

a = kb

We know that when a = 28 then b = 7. So

28 = k * 7

k=\frac{28}{7}

k=4

Therefore the equation of proportionality is:

a=4b

So when a=5  then:

5=4b\\\\b=\frac{5}{4}

6 0
3 years ago
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What is 5/9 closets to
timurjin [86]

Answer:

10/18

Step-by-step explanation:

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3 years ago
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What is the answer to 12 + 4²
Musya8 [376]

You would use order or operations to solve this problem

4 to the second power is 16 -------> 12+16= 28


Your answer would be 28

7 0
3 years ago
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Two different factories both produce a certain automobile part. The probability that a component from the first factory is defec
Ulleksa [173]

Answer:

a. 55.56%

b. 44.44%

c. 3.33%

d. 33.33%

Step-by-step explanation:

total supply =  180

a. In the first factory the total number obtained = 100

probability that the chosen part is from the first

= 100/180

= 0.5556

= 55.56%

b. In the second factory total = 80

probability that the chosen part is from the second

= 80/180

= 0.4444

= 44.44%

c. probability that part chosen at random from 180 is defective

= 2% * 0.5556 + 5% * 0.4444

= 0.02*0.5556 + 0.05*0.4444

=  0.011112 + 0.0222

= 0.03331

= 3.33%

d. probability it came rom the first factory if it is defective

\frac{0.02*0.5556}{0.02*0.5556+0.05*0.4444}

= \frac{0.011112}{0.011112+0.0222}

= \frac{0.011112}{0.033312}

= 0.33357

= 33.33%

5 0
3 years ago
Which expressions are equivalent to
klio [65]

Answer:

Tired

Step-by-step explanation:

7 0
2 years ago
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