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3 years ago

Find the surface area of the hexagonal prism

Mathematics

1 answer:

arsen [322]3 years ago

5 0

Answer:

$4,636.8 \: {in}^{2}$

Step-by-step explanation:

Surface area of the hexagonal prism

= Area of base * Height

= 6*Area of one triangle *height

$= 6( \frac{1}{2} \times 8 \times 6.9) \times 28 \\ \\ = 6(4 \times 6.9)28 \\ \\ = 6 \times 27.6 \times 28 \\ \\ = 4,636.8 \: {in}^{2}$

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A rectangle has length 2x+3 and width 7x+9. Write a polynomial in standard form that represents the perimeter of the rectangle.

sleet_krkn [62]

Answer:

18x+21

Step-by-step explanation:

First multiply each equation by 2 since there is 2 sides for both the length and width.

2(2x+3) 2(7x+9)

4x+3 14x+18

Then combine like terms

4x+14x 3+18

18x 21

4 0

4 years ago

A tree casts a shadow x = 100 ft long when a vertical rod 6.0 ft high casts a shadow 4.0 ft long. (See the illustration.) How ta

rewona [7]

I'm not really sure If I would be much help but I'll try best k? (cries a little) So you do 100
+ 6.0
+ 4.0
_________________
11 .0

So your answer is 11.0 for the tall tree.

8 0

3 years ago

50 Pts!! Brainliest!! Answer ASAP, thx.

Y_Kistochka [10]

Answer:

1/625

Step-by-step explanation:

When you multiply, you add the exponents. You now have $6^{-4}$ . This is equivalent to $\frac{1}{5^{4} }$ which equals 1/625.

6 0

4 years ago

Read 2 more answers

The line plots show the number of hours two different age groups of teenagers spent online the previous week.

nikklg [1K]

The range of the top plot, hours spent by 13-15 year olds, is found by subtracting the highest value, 34, and the lowest value, 21. 34-21=13.
The mean of the top plot is found by adding together all of the data points and dividing by 10 (the number of data points):
$\frac{21+24+26+27+27+28+28+28+31+34}{10}=\frac{274}{10}=27.4$

The range of the bottom plot, minutes spent online by 16-18 year olds, is found by subtracting the highest value, 36, and the lowest value, 12. 36-12=24.
The mean of the bottom plot is found by adding together all of the data points and dividing by 11 (the number of data points):
$\frac{12+21+27+28+28+28+28+30.5+34+35+36}{11}=\frac{307.5}{11} \approx27.95$

4 0

3 years ago

What’s the solution to this inequality -2y > 12??

Alex73 [517]

Answer:

y < - 6

Step-by-step explanation:

Given

- 2y > 12

Divide both sides by - 2, reversing the symbol as a result of dividing by a negative quantity.

y < - 6

7 0

3 years ago