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3 years ago

Need help asap!! analyze the diagram below and answer the question that follows.

Mathematics

1 answer:

katrin2010 [14]3 years ago

5 0

Answer:

D) cos^-1 (f/e)

Step-by-step explanation:

Since you only know two sides, DE = f, and DF = e, you need to use cosine to find the measure of ∠D.

Let x represent m∠D

cos x = f/e

To find x, take the inverse of cos, so:

cos^-1 (f/e) = x

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Solve 15 and 21, will give BRAINLIST!!

xeze [42]

Answer:

Step-by-step explanation:

cross multiplication:

4*10=2*x

40=2x

x=40/2=20

6.8w=2(4.5)

6.8w=9

w=9/6.8=1.32352941

4 0

3 years ago

Read 2 more answers

The volume of a sphere can be described by the following formula, where V = volume and r = radius of the sphere.

Anika [276]

Option C: $r = \sqrt[3]{\frac{3V}{4\pi} }$ is the right answer

Step-by-step explanation:

Given formula for volume of a sphere is:

$V = \frac{4}{3}\pi r^3$

We have to make r the subject of the formula

Multiplying equation by 3/4

$\frac{3}{4}V = \frac{4}{3} * \frac{3}{4} \pi r^3\\\frac{3}{4}V = \pi r^3$

Dividing both sides by pi

$\frac{3}{4\pi}V =\frac{ \pi r^3}{\pi}\\\frac{3V}{4\pi} = r^3$

Taking cube root on both sides

$\sqrt[3]{\frac{3V}{4\pi} } = \sqrt[3]{r^3} \\ r = \sqrt[3]{\frac{3V}{4\pi} }$

Hence,

Option C: $r = \sqrt[3]{\frac{3V}{4\pi} }$ is the right answer

Keywords: Volume, Sphere

Learn more about volume at:

#LearnwithBrainly

5 0

3 years ago

A study of 250 households in Cedar Bluff showed that a household produced an average of 4 pounds of garbage per day. What is the

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

Given that a study of 250 households in Cedar Bluff showed that a household produced an average of 4 pounds of garbage per day.

Here a study of only 250 were made to assess about the entire households in Cedar Bluff

Hence the population of interest in this study is the entire households in Cedar Bluff.

The sample is the 250 households in Cedar Bluff which were studied

The objective was to study the sample and from that information to assess about the population.

6 0

3 years ago

Enter the value that makes the given equation true. Y+396.23 =574.54

Levart [38]

574.54-396.23= 178.31
So Y=178.31

8 0

2 years ago

What error was made?<br><br> -4(6 - b) = 4<br> -24 - 4b = 4<br> -4b = 28<br> b = -7

lisov135 [29]

Answer:

step 2; a negative times a negative = a positive.

Step-by-step explanation:

-4(6-b)=4

4b=28

b=7

3 0

3 years ago