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yaroslaw [1]
3 years ago
14

Some studies show that high school students are more successful when the school day begins after 9 am. To test this theory,

Mathematics
1 answer:
Alex Ar [27]3 years ago
6 0

Answer:

It's probably B

Step-by-step explanation:

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Genrish500 [490]

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3 years ago
Given that ∠A≅∠B, Evelia conjectured that ∠A and ∠B are acute angles.
Valentin [98]

Answer:

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How do you factor X^2 +7X +12?
horsena [70]

Your answer is going to be

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3 years ago
78 million converted in scientific notation
Lemur [1.5K]

The <em><u>correct answer</u></em> is:

7.8 × 10⁷

Explanation:

To write a number in scientific notation, we want the decimal behind the first non-zero digit in the number. The first non-zero digit in 78 is 7; this means we want 7.8. In order to have the decimal point behind the 7, we need to move the decimal 7 places. This is the exponent of 10 in our scientific notation, which gives us

7.8 × 10⁷

7 0
3 years ago
Asphere has a diameter of 20 ft What is its surface area?<br> The surface area of the sphere is?
Snowcat [4.5K]

Answer:

1256 ft²

Step-by-step explanation:

20 ÷ 2 = 10

4πr²

4 × 3.14 × 10²

4 × 3.14 × 100

4 × 314

1256

8 0
3 years ago
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