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Helga [31]
2 years ago
5

A company tests two new products to make sure they last for more than a year. Product 1 had 950 out of 1,000 test items last for

more than a year.
Product 2 had 150 out of 200 last for more than a year. If you had to choose one of these two products to use for more than a year, which one is more
likely to last?
Mathematics
1 answer:
sashaice [31]2 years ago
8 0

Answer:

c and d

Step-by-step explanation:

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A cash register contains $10 bills and $20 bills with a total value of $520. If there are 32 bills total, then how many of each
ohaa [14]

12 is the number of $10 bills

20 is the number of $20 bills

<u><em>Step-by-step explanation:</em></u>

<u><em /></u>

Hello,

<u>Let's note</u>

a    the number of $10 bills

b    the number of $20 bills

The total value is $520 so we can write the first equation (1)

    \boxed{\sf 10a \ + \ 20b \ = \ 520 }

We know that there are 32 bills in total so we can write the second equation (2)

    \boxed{\sf a \ + \ b \ = \ 32 }

(1) - 10*(2) gives

10a + 20b - 10(a+b) = 520 - 320 = 200

10a + 20b - 10a - 10b = 10b = 200

So b = 200/10=20

and then from (2) a = 32 - 20 = 12

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

7 0
3 years ago
The value of sales at the shop decreases from 145,000 a year to 129,000 find the percentage decrease in the value of sales
iren [92.7K]

Answer:

11.0344828%

Step-by-step explanation:

145000 - 129000 = 16000.

16000/145000 = 16/145 = 0.110344828

Therefore there was a 11.0344828% decrease

5 0
2 years ago
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A builder uses squares to lay out various projects. Write two equations. The first equation should express the area of the squar
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Area as a function of length can be written as

f(l) = l^2

And volume of cube can be expressed as a function of side s as,

f(s) = s^3
3 0
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A=5 btw <br><br> Please help btw I’m in 7th Grade
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Answer:

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2. 47=3(2times 7) +5 and 47 =6 time 7 plus 5

Step-by-step explanation:

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The wool of a vicuna is finer than any other wool. The hair of this animal can be as thin as 0.000006 meters. If the average thi
Serjik [45]

Answer: your answer you are seeking is D

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