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3 years ago

Write and solve a real-world problem that can be modeled by the equation 0.75x-18.50=0.65x

1 answer:

6 0

Diana had chocolate, and ate some, leaving 0.75 of it for Sarah.

Sarah ate 18.5 grams of it and return the rest to Diana, which was 65% of the original chococate.

how much chocolate did Diana have at the beginning?

and the solution is:

0.75x-18.50=0.65x

0.75x-0.65x=18.50
0.1x=18.50
x=185

so Diana had 185 grams of chocolate.

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3 years ago

Given n = 875 and pˆ = 0.45, find the margin of error E that corresponds to a 95% confidence level.

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The margin of error E that corresponds to a 95% confidence level is: $E=0.03297$

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Level of significance = 1-0.95 = 0.05

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So:

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3 years ago

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3 years ago

Find the 23rd term in the sequence 2, 6, 10, 14, 18, 22

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Hello!

First you have to find the rule that the sequence is going by

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To find the 23rd term you multiply the rate by the term you want

23 * 4 = 92

Next you subtract the first number

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The answer is 90

Hope this helps!

7 0

3 years ago

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