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3 years ago

Select the correct answer.

Mathematics

2 answers:

finlep [7]3 years ago

8 0

the answer is B

Step-by-step explanation:

I use edmentum too. I graphed the function and b was correct

lisov135 [29]3 years ago

8 0

Answer: b f(x) = 0.2(x − 2)2 + 1

Step-by-step explanation:

I got it right on the test.

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Question

sp2606 [1]

Given:

CH = 3960 miles

Altitude = 240 miles

To find:

The distance from the space station to the horizon.

Solution:

The reference image for answer is attached below.

Radius = 3960 miles

CD = CH = 3960

ED = 240

EC = CD + ED

= 3960 + 240

EC = 4200 miles

By Pythagorean theorem:

$E C^{2}=E H^{2}+C H^{2}$

$4200^{2}=E H^{2}+3960^{2}$

$17640000=E H^{2}+15681600$

Subtract 15681600 from both sides.

$17640000-15681600=E H^{2}+15681600-15681600$

$1958400=E H^{2}$

Taking square root on both sides, we get

$$1399.428=EH$

$$1400 \approx EH$

The distance from space station to the horizon is approximately 1400 miles.

8 0

4 years ago

A regular heptagon has a radius of approximately 27.87 cm and the length of each side is 24.18 cm. what is the approximate area

aniked [119]

The area of the regular heptagon which has a radius of approximately 27.87 cm and the length of each side is 24.18 cm is 2125 cm².

<h3>What is the area of a heptagon?</h3>

Heptagon is the closed shape polygon which has 7 sides and 7 interior angles.

The area of the regular heptagon is found out using the following formula.

$A=\dfrac{7a}{4}\cot \left(\dfrac{180}{7}\right)$

Here, (<em>a</em>) is the length of the heptagon.

A regular heptagon has a radius of approximately 27.87 cm and the length of each side is 24.18 cm. Put the value of side in the above formula,

$A=\dfrac{7\times24.18}{4}\cot \left(\dfrac{180}{7}\right)\\A\approx 2125\rm\; cm^2$

Hence, the area of the regular heptagon which has a radius of approximately 27.87 cm and the length of each side is 24.18 cm is 2125 cm².

Learn more about the area of a heptagon here;

brainly.com/question/26271153

3 0

2 years ago

Last week, you spoke with 800 customers in 40 hours."

marishachu [46]

Answer:

10 customers

Step-by-step explanation:

Hi!

Each hour has 60 minutes, so two half hour (30 minute) blocks. Thus, 1 hour = 2 half hours, so 40 hours = 80 half hours.

800 customers in 80 half hours, divide that:

800 customers / 80 half hours = 10 customers / half hour

So, your answer is 10 customers every half hour, or 10 customers every 30 minutes.

3 0

3 years ago

-2 (3x - 4)= -6x - 8 true or false

Mazyrski [523]

<span>False.
-2(3x - 4) distributes to become -6x + 8
Thus, it is easy to tell it is false:

-2(3x - 4)= -6x - 8
-6x + 8 = -6x - 8
Add 6x to both sides;
8 </span>≠<span> -8</span>

6 0

3 years ago

Read 2 more answers

Sketch the graph of the given data on the accompanying coordinate plane. a)choose ad state an appropriate scale so that all of t

vodomira [7]

Part A
A good scale for y to use would be 100, since it fits in all of the f(x)'s and the next value (243) is obviously not going to fit.
As for x, you can use 4 or 5. If you do 5, you're not going to get to it though, because f(x) will be 243.

Part B
When our input increases by 1, our output multiplies by 3.
Multiplying by 3 $x$ times can be represented as $3^x$ .
We start at 1, so we'd want to have $1\times3^x$ . However, 1 times anything doesn't change its value, so we can leave it out because it is redundant.

As for making the graph, just label your y axis 0 to 100, and your x axis 0 to 5.
Then mark out (0, 1), (1, 3), (2, 9), (3, 27), and (4, 81).
Draw a curve that includes all of these. It should hit y=100 a little after x=4, since x=5 is all the way at y=243.

6 0

3 years ago