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cestrela7 [59]
3 years ago
5

If 4x^2 - 100 = 0, the roots of the equation are

Mathematics
1 answer:
ololo11 [35]3 years ago
5 0
4x^2-100=0 \ \ \ \ \ \ |+100 \\
4x^2=100 \ \ \ \ \ \ \ \ \ \ \  |\div 4 \\
x^2=25 \\
x=\pm \sqrt{25} \\
x=\pm 5 \\
x=-5 \hbox{ or } x=5

The answer is (3) -5 and 5.
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Simplify 2(x - 4) + 7(x + 2).
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2x-8+7x+14

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What does simplifying the ratio of am to 250 mm to 50 cm give?​
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3 years ago
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A population has a mean of 300 and a standard deviation of 70. Suppose a sample of size 125 is selected and is used to estimate
Mrrafil [7]

Answer:

a:  0.8884

b: 0.9934

Step-by-step explanation:

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2 years ago
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Vikentia [17]

Answer:

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Step-by-step explanation:

Use the top top, bottom bottom method.

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