MATHEMATICS MIDDLE SCHOOL

Tomas learned that the product of the polynomials (a + b)(a2 – ab + b2) was a special pattern that would result in a sum of cubes, a3 + b3. His teacher put four products on the board and asked the class to identify which product would result in a sum of cubes if a = 2x and b = 1.

Answers

Answer 1
Answer:

Answer:

8x^3+1 is the answer.

Step-by-step explanation:

Here we know that

(a+b) (a^2-ab+b^2) = a^3+b^3

here we have a =2x and b =1

on plugging these values we get

a^3+b^3=(2x)^3+(1)^3\n8x^3 +1
Answer 2
Answer: The answer is 2x because the evasion is (2x)3+(1)3. 3 times 1 is 3. so it is (2x)3+3. you more the 3 next to the 2x over and now it id 2x+3-3.2x

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1/4 to 1/2 find the percent of change-increase or decrease

Answers

The percent of change would be -33.3% which would then equal a 33.3% decrease (when decimal is rounded) 

what I did was turn 1/4 and 1/2 into decimals to make it easier to solve 
It's a decrease 1/4 to 1/2 is a decrease

PLEASE HELP ME JUST THREE QUESTIONS

Answers

reason 1 and 2 are the best answers 

A coffee shop uses 4 liters of milk every day.a. If there are 15 liters of milk in the refrigerator, after how many days will more milk need to be purchased? Explain how you know.
b. If only half as much milk is used each day, after how many days will more milk need to be purchased?

Answers

Answer:

explained

Step-by-step explanation:

a. daily requirement of milk = 4 liters

15 liters of milk is present

this 15 liters of milk will be used up in (15)/(4) days

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The lengths of three line segments are 4 centimeters, 5 centimeters, and 9 centimeters.Using this information, how many triangles can be constructed.

Answers

I m pretty sure it's 1

Answer:

none

Step-by-step explanation:

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67cm
60 cm

Answers

Answer:

Since April 2020 wow

Step-by-step explanation:

Tell whether the ratios form a proportion. 9/4, 2/3

Answers

Answer:

No ratios do not form a proportion.

Step-by-step explanation:

For example you take these fractions 9/4 and 2/?

9 - 2

4 - ?

Solve: 4×2÷9= about 0.9

0.9≠ 3
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