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Ber [7]
3 years ago
7

I need help please and thank you

Mathematics
2 answers:
Andreas93 [3]3 years ago
4 0

Positive times negative is negative, so we get

(31)(-80) = - 31 × 8 × 10 = - (240 + 8) × 10 = -2480

Answer: -2480

ozzi3 years ago
3 0

Answer:

-2480

Step-by-step explanation:

31 * -80 =-2480

Not sure how to explain this more, but I hope this helps!

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Bradley had 25 baseball cards in his collection. He receives x number of baseball cards for his birthday.
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Step-by-step explanation:

4 0
2 years ago
Riley has collected surveys for her final thesis project. One one question, 46.1% of respondents said that conditions were impro
ira [324]

Answer:

The maximum value of the confidence interval for this set of survey results is 51.73%.

Step-by-step explanation:

A confidence interval has two bounds, a lower bound and an upper bound.

These bounds depend on the sample proportion and on the margin of error.

The lower bound is the sample proportion subtracted by the margin of error.

The upper bound is the margin of error added to the sample proportion.

In this question:

Sample proportion: 46.1%

Margin of error: 5.63%.

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46.1+5.63 = 51.73

The maximum value of the confidence interval for this set of survey results is 51.73%.

5 0
3 years ago
Write what you notice
brilliants [131]
1.5
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8 0
3 years ago
Translate the phrase to an algebraic expression.
mario62 [17]

Answer:

A

Step-by-step explanation:

If it’s 80 less than, your subtracting and then 4 times a number is 4x so your answer is 4x-80

8 0
3 years ago
Read 2 more answers
What is 18 x 9.24 step by step?
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Answer: 166.32

Step-by-step explanation: multiply 18 by 9 first. (162) then multiply the decimal numbers. Then at that to the previous product.

7 0
2 years ago
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