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Anna11 [10]
3 years ago
13

I do not understand these.

Mathematics
1 answer:
Vladimir [108]3 years ago
6 0

Answer:

k(-1) = 7.

Step-by-step explanation:

k(-1) is the value of the function k when x = -1.

You read this off the graph.

Find the value of the point  on the graph which corresponds to x = -1.  From x = -1 on the horizontal axis move straight up until you meet the graph of k. Now look horizontally to the right  and read off the value on the vertical

 y-axis

You'll find it is 7.

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The height of a right rectangular prism is 3 units greater than the length of the base. The edge length of the square base is x
jok3333 [9.3K]

Answer:

B. x^3 + 3x^2

Step-by-step explanation:

Volume of a rectangular prism=width * length * height

V=w*l*h

h=3 greater than the length of the base

h=x+3

Length of the base=x

Width=x

Substituting values into the formula

V=w*l*h

=(x)*(x)*(x+3)

Multiplying

=(x^2)(x+3)

=x^3 + 3x^2

Option B is the correct answer

5 0
3 years ago
Can someone check if my answer is correct? Thank you!
a_sh-v [17]

Answer:

Step-by-step explanation:

you are correct.

3 0
3 years ago
In a certain fraction, the numerator is 4 less than the denominator. If 4 is added to both the numerator and the denominator , t
love history [14]

Answer:

Step-by-step explanation:

If the new fraction is 8/12 I will show how to find it.

Let's say the original denominator is x, then the numerator is x-4, so we have (x-4)/x.

Then it says f we add 4 to both, so now we have x/(x+4) this equals 8/12.  Now, keep in mind -4 cannot be an answer because it would make x/(x+4) be divided by 0 which wouldn't exist.

Now we just use algebra.

x/(x+4) = 8/12

12x = 8(x+4)

12x = 8x + 32

4x = 32

x = 8

So the original fraction (x-4)/x = (8-4)/8 = 4/8

5 0
3 years ago
Hi, I don't need this really fast, but I really don't understand how to do surface area and lateral surface area with rectangula
ipn [44]

Answer:

The surface area is the area that describes the material that will be used to cover a geometric solid. When we determine the surface areas of a geometric solid we take the sum of the area for each geometric form within the solid.

3 0
2 years ago
Read 2 more answers
I need help please !!
AfilCa [17]

Answer:

y = 2x + 14

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask ;)

5 0
3 years ago
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