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valina [46]
4 years ago
13

Which equation shows how the solution to 25x^2- 1=0 can be found by factoring?

Mathematics
1 answer:
stepladder [879]4 years ago
5 0
D. Use FOIL and guess and check to factor the equation
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Please Help! Will mark brainliest if correct! THANK QQQQQQQQQQQQQQQQQQ!
Fiesta28 [93]

Answer:

About 28.26 inches.

Step-by-step explanation:

The formula for circumfrence is c = 2(pi) * r.

We know that r = 4.5 (because the diameter is 9 inches).

So, the equation is c = 2(pi) * 4.5

Let's solve:

c = (2*3.14) * 4.5

c = 6.28 * 4.5

c = 28.26

Therefore, the final answer is 28.26 inches.

Of course, this is not exact because pi is irrational and goes on forever, but the question is asking for an estimate anyways.

3 0
3 years ago
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sweet-ann [11.9K]
1x30=30
15x15=30
3x10=30
4 0
4 years ago
5c + 16.5 = 13.5 + 10c
Leya [2.2K]

Answer:

Hello!

________________________

5c + 16.5 = 13.5 + 10c

Exact Form:  c = 3/5

Decimal Form: c = 0.6

Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helped you!

8 0
4 years ago
If $860 is invested for one year at 11% simple interest, how much interest is earned?
Licemer1 [7]
860 *11/100=9460/100=94.6
94.6 is earned

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3 years ago
Simplify 3³ × 3²
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3 to the 5th power.....when you multiply you add the exponents
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3 years ago
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