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3 years ago

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in the diagram, AB is parallel to DE. Also, DE is drawn such that the length of DE is half the length of AB. If sin A=0.5, then

what is sin E?

2 answers:

kvv77 [185]3 years ago

8 0

Answer:

I agree with the other person, I hope this makes you more sure in their answer

Ainat [17]3 years ago

7 0

Answer:

I got sin E = 0.5

Thus answer choice C being the correct choice

Hope this helps ;)

Step-by-step explanation:

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Solve: -1/2 (-5/6 + 1/3)

alexira [117]

Answer:

1/4

Step-by-step explanation:

an even number of negatives equals a positive number

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3 years ago

A random sample of 28 statistics tutorials was selected from the past 5 years and the percentage of students absent from each on

Zielflug [23.3K]

Answer:

The 90% confidence interval using Student's t-distribution is (9.22, 11.61).

Step-by-step explanation:

Since we know the sample is not big enough to use a z-distribution, we use student's t-distribution instead.

The formula to calculate the confidence interval is given by:

$\bar{x}\pm t_{n-1} \times s/\sqrt{n}$

Where:

$\bar{x}$ is the sample's mean,

$t_{n-1}$ is t-score with n-1 degrees of freedom,

$s$ is the standard error,

$n$ is the sample's size.

This part of the equation is called margin of error:

$s/\sqrt{n}$

We know that:

$n=28$

$\bar{x}=10.41$

degrees of freedom $= 27$

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$t_{n-1} = 1.703$

$s = 3.71$

Replacing in the formula with the corresponding values we obtain the confidence interval:

$\bar{x}\pm t_{n-1} \times s/\sqrt{n} = 10.41 \pm 1.70 \times 3.71/\sqrt{28} = (9.22, 11.61)$

8 0

3 years ago

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What is 3/8 of a full rotation

Svetlanka [38]

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3 years ago

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A police officer investigating a car accident finds a skid mark of 115 ft in length.

Minchanka [31]

Answer:

Speed of car = 49 mph (Approx.)

Step-by-step explanation:

Given:

Length of skid marked = 115 ft

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Where d = Length of skid marked

Find:

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Computation:

Speed of car = √21d

Speed of car = √21(115)

Speed of car = √2,415

Speed of car = 49.1426

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maxonik [38]

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