3 years ago

(a-1)*(a+1) How does the expansion of this thing works?

1 answer:

5 0

This is a simple formula:(a-b)*(a+b)= a^2-b^2
And it goes like this for your example: (a-1)*(a+1)=a*a+a-a-1*1=a^2-1^2=a^2-1

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NikAS [45]

Check the picture below.

so, that'd be 20.24845673131658693325, and to the nearest tenth it'd then be 20.2

8 0

3 years ago

Marina CMI [18]

Answer:

I think it's D

Step-by-step explanation:

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3 years ago

tekilochka [14]

You want log √(9/25). Recognizing that √9 = 3 and that √25 = 5, we get

log 3/5, which by rules of logs comes out to log 3 - log 5.

To four decimal places:

log 3 - log 5 = 0.4771 - 0.6990, or -0.2218.

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4 years ago

pentagon [3]

Answer:

8 cookies

Step-by-step explanation:

We are asked in the above question to find the most number of cookies that would be in the bag.

We solve the above question using the Greatest Common Factor method

We find the factors of 16, 24, 32

The factors of 16 are: 1, 2, 4, 8, 16

The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24

The factors of 32 are: 1, 2, 4, 8, 16, 32

Then the greatest common factor is 8.

Therefore, the most number of each type of cookie that will be in the bag is 8 cookies

4 0

3 years ago

nadya68 [22]

Answer:

where is the rest of the question.......

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3 years ago