MATHEMATICS MIDDLE SCHOOL

Quick problem to check!

Answers

Answer 1

Answer:

To find the rate of change, also known as the slope, we can use the slope formula with these two given points.

Point 1: (20, 25)

Point 2: (50, 40)

(40 - 25) / (50 - 20)

15 / 30

0.5

The rate of change of this function is $0.50 / lb.

Hope this helps!! :)

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ESTIMATION - The total bill for lunch was $12.72, of which $0.72 was sales tax. What was the sales tax rate rounded to the nearest whole percent?PLEASE HELP!

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your answer is 13.44 and rounded to the whole is still going to be 13

How to round 8,230 to the nearest thousand

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8,230. Look at the eight. Now look at the number BEHIND it. If the number is 4 or LOWER, then turn that number into a zero. If it is 5 or HIGHER, then turn the number behind it into the number that comes after. For example: 8,230. 2 is lower than 4, so the answer is 8,000. :-D

it is 8000 because 230 is not over 500

Tell whether each number is a solution to the problem modeled by the following equations mystery number: five more than -8 times a number is 29. what is the number?

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29-5=24
24/-8=-3
-3 is the answer. Just work the problem backwards.

so I get how to do the first step but I forgot how to factor it back? can someone explain how please, I want to be able to do it for all of them. thanks

Answers

This problem is an example of difference of squares. 49 is a perfect square root.
So the answer is (x-7)²
Let me know if you need any more help with these kinds of problems.

Sara can take no more than 22 pounds of luggage on a trip.Her suitcase weighs 112 ounces.How many more pounds can she pack without going over the limit?

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Sara can pack up to 15 more pounds without going over the weight limit.

Dimensional analysis

Let's start solving the problem by converting the weight of Sara's suitcase from ounces to pounds:

112 ounces = 112/16 = 7 pounds

Next, we need to subtract the weight of Sara's suitcase from the maximum weight she can take to find how many more pounds she can pack:

22 pounds - 7 pounds = 15 pounds

In other words, Sara can pack up to 15 more pounds without going over the weight limit.

More on dimensional analysis can be found here: brainly.com/question/13156854

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If five coins are flipped, how many possible outcomes are there?

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so there are 2 times 2 times 2 times 2 times 2 possibilites or 2^5 possibilities or 32 possibilities

you only flip it 5 times and please don't delete this.

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