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Maurinko [17]
3 years ago
8

Directions - Write The Correct Number In Each Blank To Show The Community Property Of Addition.

Mathematics
1 answer:
kakasveta [241]3 years ago
4 0
56+82=82+56
I hope this helps!!!
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Select the correct answer.
malfutka [58]

Answer:

B

Step-by-step explanation:

B

x - 4 squared provides 2 real zeros that are the same. These two are not distinct.

The other two come from x^2 - 7x + 10 which has a discriminate of

sqrt(7^2 - 4*1*10) = sqrt(9) = +/- 3 leading to something real and different.

6 0
3 years ago
48 cookies; 25% decrease how do I do it?????
Harrizon [31]
Step One: Find 25% of 48.
Step Two: Subtract that number from 48.

48 * 0.25 = 12
48 - 12 = 36

36 cookies
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3 years ago
Becky swims 3/4 of a mile each day. How many miles does she swim in 5 days?
pav-90 [236]

The answer is C. 3 3/4 is the answer.

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3 years ago
If 18 g of a radioactive substance are present initially and 9 yr later only 9 g remain, how much of the substance will be prese
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Step-by-step explanation:

8 0
3 years ago
Suppose that the world's current oil reserves is
SOVA2 [1]

Answer:

  A)  R = 1900 -24t

  B)  1684 billion barrels

  C) 79.17 years

Step-by-step explanation:

<h3>A)</h3>

Reserves start at 1900 billion barrels and decrease by 24 billion barrels each year. The value for t=0 is 1900; the value for t=1 is 24 less.

  R = 1900 -24t

__

<h3>B)</h3>

For t=9, the reserves will be ...

  R = 1900 -24(9) = 1900 -216 = 1684 . . . . billion barrels

__

<h3>C)</h3>

The reserve will be 0 when ...

  0 = 1900 -24t

  24t = 1900 . . . . . add 24t

  t ≈ 79.17 . . . . divide by 24

Reserves will be gone in about 79.17 years.

5 0
3 years ago
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