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2 years ago

PLEASE HELP ME!

Mathematics

2 answers:

Gala2k [10]2 years ago

7 0

Answer: the answer would be 8.94

Step-by-step explanation:

I hope this helps! :)

Im sorry if it turns out to be wrong!

Have a good rest of your day!

Tresset [83]2 years ago

3 0

The Pythagorean theorem is a^2+b^2=c^2

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starting at sea level a submarine descends at a constant rate to a depth of negative 5 6 Mile relative to sea level in 4 minutes

ycow [4]

Answer:

Step-by-step explanation:

To find how many miles the submarine is going per minute, you need to divide the miles (56) by the minutes (4)

56/4 =

14 miles per minute

If the submarine has been descending for 1 minute, and descends at 14 miles per minute, you can conclude that it wend 14 miles below sea level in 1 minute.

7 0

4 years ago

Using traditional methods, it takes 8.1 hours to receive a basic flying license. A new license training method using Computer Ai

Karo-lina-s [1.5K]

Answer:

The value of the test statistic is 0.4.

Step-by-step explanation:

The value of the test statistic is given by:

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is expected mean, $\sigma$ is the standard deviation and n is the size of the sample.

Using traditional methods, it takes 8.1 hours to receive a basic flying license.

This means that $\mu = 8.1$

A researcher used the technique with 23 students and observed that they had a mean of 8.2 hours with a standard deviation of 1.2.

This means that $n = 23, X = 8.2, \sigma = 1.2$

Find the value of the test statistic.

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{8.2 - 8.1}{\frac{1.2}{\sqrt{23}}}$

$t = 0.4$

The value of the test statistic is 0.4.

8 0

3 years ago

Please help I don't understand!

levacccp [35]

Answer:

Step-by-step explanation:

Take the sides in proportion.

⇒ $\frac{AE}{AD} =\frac{AB}{AC}$

⇒ $\frac{12}{12+8} =\frac{x}{15}$

⇒ $\frac{12}{20} =\frac{x}{15}$

⇒ $\frac{3}{5} =\frac{x}{15}$

⇒ $3 = \frac{x}{3}$

⇒ x = 3 × 3

⇒ x = 9

3 0

2 years ago

Factor completely 5x2 + 30x + 50

SSSSS [86.1K]

5(x² + 6x + 10)

That's the best way to factor it

8 0

3 years ago

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△ABC is reflected to form △A'B'C' .

Leno4ka [110]

Reflection across the y-axis

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3 years ago

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