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elena55 [62]
3 years ago
6

Find each of the numbers below. Simplify your answers as much as possible.

Mathematics
1 answer:
puteri [66]3 years ago
5 0

Answer:

a. 4

b. -8

c. -2

Step-by-step explanation:

Take any number x;

Its opposite is -x

The opposite of its opposite is x

Using the above statements, we can solve the following questions

Solving (a): -4

In this case:

x = -4

The opposite; -x is

-x = -(-4)

-x = 4

Solving (b): 8

In this case:

x = 8

The opposite; -x is

-x = -8

Solving (c): -2

In this case:

x = -2

The opposite; -x is

-x = -(-2)

-x = 2

The opposite; -(-x) is

-(-x) = -2

x = -2

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4x²y + 3y²z - 2xy² - 3x²y + 4y²z
pochemuha

Answer:

=x2y−2xy2+7y2z

Step-by-step explanation:

Simplify

Let's simplify step-by-step.

4x2y+3y2z−2xy2−3x2y+4y2z

=4x2y+3y2z+−2xy2+−3x2y+4y2z

Combine Like Terms:

=4x2y+3y2z+−2xy2+−3x2y+4y2z

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Answer:

=x2y−2xy2+7y2z

7 0
3 years ago
(20 POINTS!!!) Bob can paint a room in 3 hours, and Suzie can paint one in 2 hours. How long will it take them together to paint
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Answer:

1 hour 12 minutes or 1.2 hours

Step-by-step explanation:

You add fractions to get this.

1 room/3 hours + 1 room / 2 hours = 1 room / x

0.33333333+0.5 = 1 room / x

0.83333333 = 1 / x    Multiply both sides by x

0.83333333x  = 1      Divide by 0.8333333

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4 0
3 years ago
Help me
Goshia [24]
... what’s the question?
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You want to paddle a canoe across a small lake and want to know how far it is to the other side. You take measurements ln your s
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Answer:

x= 5*400 ft = 2000 ft

Step-by-step explanation:

For this case we can use the figure attached and we are interested in order to find the value of x.

We have two similar triangles (DEC and ABC) and we can find the scale factor like this:

Factor= \frac{EC}{BC}=\frac{500ft}{100ft}=5

And now we can apply proportions in order to find the value of x using the two sides DE and BA, since we have the ratio between the triangle DEC and ABC we have this:

Factor=5=\frac{x ft}{400 ft}

And solving for x we got:

x= 5*400 ft = 2000 ft

And then the distance across the lake would be 2000 ft

4 0
3 years ago
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