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Lena [83]
3 years ago
12

What is the greast comma factor of 21 and 40

Mathematics
1 answer:
noname [10]3 years ago
8 0
List the factors:

21: 1, 3, 7, 21
40: 1, 2, 4, 5, 8, 10, 20, 40

They only have 1 in common.

So 1 is the greatest common factor.
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Help asap please!!!!!!​
Andrews [41]

Step-by-step explanation:

[(-3 × 2 × (-4)] ÷ [-6 × 12]

[3 × 2 × -4] ÷ [-6 × 12]

[6 × -4]/[-6 × 12]

-4/(-1 × 12]

-4/-12

⅓

Option A is wrong

Option B is wrong -9/-18 = ½ not ⅓

Option C is correct = -24/-72 = ⅓

Option D is wrong = 9/-18 = -½ not ⅓

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3 years ago
What is the answer to:<br> 18 - 5z + 6z &gt; 3 + 6
miv72 [106K]
18 - 5z + 6z > 3 + 6
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3 0
4 years ago
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4 years ago
Using the Quadratic Formula, which of the following is the solution to the quadratic equation x2 + 2x - 3 = 0?
saw5 [17]

Answer: x=1 or x=-3

Step-by-step explanation:

Quadratic formula is -b+-\sqrt{b^{2}-4ac } /2

a=1 b=2 c=-3

Substitute

(-2+-\sqrt{2^{2}-4(1)(-3) }) /2\\(-2+-\sqrt{4+12}) /12\\(-2+-\sqrt{16}) /2\\(-2+-4) /2\\x=\frac{-2+4}{2} \\x=\frac{-2-4}{2} \\\\\\Simplify\\x=\frac{2}{2} \\\\x=\frac{-6}{2} \\\\Simplify\\x=1\\x=-3

6 0
4 years ago
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kirill [66]

Answer:

V = 38659.68 cm^3

Step-by-step explanation:

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C = 2πr

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V = 38659.68 cm^3

I feel I should mention this is all true if the circumference is in centimeters, since the question didn't specify.  

6 0
3 years ago
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