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ella [17]
3 years ago
6

8w-15=57 two step equations

Mathematics
1 answer:
insens350 [35]3 years ago
7 0

Answer:

w=9

Step-by-step explanation:

Our equation is: 8w-15=57

Add 15 to both sides

-15 is now gone because we added 15 so it would be zero

and we have 72 because 15 plus 57 is 72

Now we have:

8w=72

Divide by 8 on both sides

8w cancels out to just w

and 72 divided by 8 is 9

And you're left with:

w=9

       

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The product of complete numbers<br> (4, 6) and (5-6) is ?
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3 years ago
A student records the repair cost for 17 randomly selected stereos. A sample mean of $52.33 and standard deviation of $21.44 are
Dafna11 [192]

Answer:

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Step-by-step explanation:

Given that,

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∝ = 0.10

Now,

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52.33 + 9.0791  = 61.4091

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So,

90% confidence interval is (43.25, 61.41)

Also,

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Upper end-point = 61.41

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