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laiz [17]
3 years ago
11

FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) th

ank you very much!!! (90pts)

Mathematics
2 answers:
mixas84 [53]3 years ago
8 0

Answer:

320

Step-by-step explanation:

Well, the volume of a pyramid is 1/3 b * h

What is the height of one of these pyramids? Well, they tell you that it's 10. What is the base? It's 6 * 8 = 48

10 * 48 * 1/3 = 160

Now multiply by 2 because there are two pyramids. One on top and one one bottom. 160 * 2 = 320

sdas [7]3 years ago
5 0

Answer: 320

Step-by-step explanation:

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For what value of k does the graph of y = x²-3x-k pass through the point (-1,2)?
gavmur [86]
The value of k should be 2.
 if you plug the y value of the point in the equation for y and do the same with x you should be able to get this answer after fallowing the order of operation.
5 0
4 years ago
What is the volume of this cylinder?
dalvyx [7]

Answer:

12762.72 cubic meters

Step-by-step explanation:

The volume of a cylinder is denoted by the formula: V=\pi r^{2} h, where r is the radius and h is the height.

Here, we see that the height h = 11.5 m. We also see that the diameter is 37.6 meters. Since diameter = 2 * radius, we can divide this number by 2 to get the radius: r = 37.6/2 = 18.8 meters.

Now substitute these values into the equation:

V=\pi *(18.8^2)*11.5=3.14*(18.8^2)*11.5=12762.72 cubic meters

Hope this helps!

5 0
3 years ago
Read 2 more answers
Which of the following statements is always true about the function y=a•b^x
OLEGan [10]

Answer:

c. When a > 0 and b > 1, the function models exponential growth.

Step-by-step explanation:

You have exponential decay when a > 0 and 0 < b < 1.

5 0
3 years ago
Solve n3 + 2n2 - 15n = 0 by factoring.
azamat
N³ - 2n² - 15n = 0

"n" 

n (n² + 2n - 15) = 0

n = 0

n² + 2n - 15 = 0

Δ = (2)² - 4(1)(-15)
Δ = 4 + 60 = 64

n' = (-2+8) / 2 = 6/2 =3
n'' = (-2-8) / 2 = -10/2 = -5

Solution:

S {-5 , 0 , 3 }
5 0
3 years ago
Read 2 more answers
What is the coefficient in the expression 3-15r?
astraxan [27]

Answer:

15

Step-by-step explanation:

Coefficient means the number in front of the variable (like r) or term (a letter).

In your expression 3-15r, 15 is the coefficient.

I hope this helps.

6 0
3 years ago
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