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3 years ago

Estimate the products of 79 × 37 and 62 × 49 . Which choice shows the sum of the estimates?

Mathematics

1 answer:

klio [65]3 years ago

4 0

Answer:

Sue of estimates = 6200

Step-by-step explanation:

$79\times37$ can be estimated as $80\times 40$ which is $=3200$

Similarly $62\times49$ can be estimated as $60\times 50$ which is $=3000$

∴ Sum of estimates = $3200+3000=6200$

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community gym charges a 40$ membership fee and a 50$ monthly fee workout gym charges a 190$ membership fee and a 40$ monthly fee

sweet-ann [11.9K]

Let x represent months

40 + 50x = 190 + 40x

Subtract 45 from both sides

40 + 10x = 190

Subtract 40 from both sides

10x = 150

Divide 10 by both sides and x = 15 months

Plug back in the 15 months for x

40 + 50(15)= $790

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3 years ago

You collect a random sample of size n from a population and calculate a 95% confidence

Vsevolod [243]

A strategy which would produce a new confidence interval with an <u>increased</u> margin of error is to: A. use a 98% confidence level.

<h3>What is a confidence interval?</h3>

A confidence interval simply refers to a range of estimated values which defines the probability that a population parameter will lie within it.

<h3>How to calculate the margin of error?</h3>

Mathematically, a margin of error is calculated by using this formula:

$MOE_{\gamma}=Z_{\gamma} \times \sqrt{\frac{\sigma^2}{n} }$

From the above formula, we can deduce that the margin of error is directly proportional to the critical value and inversely proportional to the square root of sample size.

This ultimately implies that, increasing the confidence level from 95% to 98% would <u>increase</u> the critical value and by extension the margin of error and vice-versa.

Read more on confidence interval here: brainly.com/question/25779324

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2 years ago

The temperature decreased by 11 degrees. enter an integer that represents the situation

dem82 [27]

If its talking about the temperature decreased it would be -11 but it's asking for an integer

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3 years ago

Robert ate a carton of yogurt that contained 260 calories, a sandwich

Nastasia [14]

Answer:

780 calories

Step-by-step explanation:

Robert ate a carton of yogurt = 260 calories

he ate a sandwich = 425 calories

And he also ate an orange = 95 calories

Altogether he consumed = 260 + 425 + 95

= 780 calories.

pls mark me brainliest that would be a really great help. Thanks...

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2 years ago

Which graph represents f(x) = -1/4 x^6

SashulF [63]

Answer:

answer is B

Step-by-step explanation:

I used Desmos to graph the function

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2 years ago