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katrin [286]
3 years ago
14

Please help me. I'm confused.

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0
Vertically organize the problems
  (         -4x^2-2x-1)
- ( 3x^3             +2)
Eliminate the minus sign by multiplying by -1
-1(3x^3             +2)
This is the new problem
   (        -4x^2-2x-1)
+ (-3x^3             -2)

Simplify any terms, then this is the answer
-3x^3-4x^2-2x-3
This is how I got it, but if there are any other answers, feel free to share
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A 15 kg ball is thrown into the air. It is going at 4m/s when thrown. How much potential energy will it have at the top?
ira [324]

Answer:

P.E = mgh = 120N

Step-by-step explanation:

v² = u² - 2as

At the top, the velocity is = 0

0² = 4² - 2 x 10 x s

4² = 20s

s = 16/20

s = 0.8metres.

It rose only 0.8metres.

Therefore P.E = 15 x 10 x 0.8

:. P.E = 15 * 8

:. P.E = 120N

3 0
3 years ago
What lists all integer solutions of the inequality |x|<2
Nookie1986 [14]

Answer:

The solution to that inequality is (-2,2).

Step-by-step explanation:

Given the inequality |x|<2, we have two possibilities

1) x<2 or

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Then the intersection between solutions is (-2, 2).

4 0
3 years ago
Which expressions are polynomials?
tester [92]

Answer:

c option

Step-by-step explanation:

An expression consisting of a sum of a finite number of terms, each term being the product of a constant coefficient and one or more variables raised to a non-negative integer power, such as anxn+an−1xn−1+...+a0x0.

6 0
3 years ago
What is the height, length, and width if the volume is 1584 in3?
LekaFEV [45]
<span>A rectangular solid has a base with length 6 cm and width 5 cm. If the volume of the solid is 300 cm3, find the height of the solid. [Hint: The volume of a rectangular solid is given by V = LWH.]</span>
5 0
4 years ago
A solid object in the shape of a cylinder is shown below.
lozanna [386]

Answer:

0.08\ kg/m^3

Step-by-step explanation:

Density is defined as mass of an object divided by its volume.

#We calculate the volume of the cylinder:

V=\pi r^2 h, r=D/2=6/2=3\ cm\\\\=3.14\times 3^2\times 7\\\\=197.82\ m^3

Given the mass= 15.3kg and volume as above, we calculate density as:

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Hence, the solid's density is 0.08\ kg/m^3

4 0
4 years ago
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