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valkas [14]
3 years ago
14

3. Find the difference between the two expressions. 1x - 5y)-1(x + 2y)

Mathematics
1 answer:
Fittoniya [83]3 years ago
5 0

Answer:

-7y

Step-by-step explanation:

Our equation is:

\left(1x-5y\right)-1\left(x+2y\right)

First we dritribute

Now we have, x-5y-x-2y

Combine light terms

and we get -7y

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A first number is nine less than a second. The sum of the numbers is 45. Find the numbers.
oee [108]

Answer:

The first number is <u>18</u> and the second number is <u>27</u>.

Step-by-step explanation:

Given:

A first number is nine less than a second.

The sum of the numbers is 45.

Now, to find the numbers.

Let the second number be x.

And the first number be x-9.

The sum of the both numbers is 45.

According to question:

(x-9)+x=45.

⇒ x-9+x=45.

⇒ 2x-9=45.

<em>Adding both sides by 9 we get:</em>

⇒ 2x=54.

<em>Dividing both sides by 2 we get:</em>

⇒ x=27.

<u><em>The second number = 27</em></u>.

Now, to get the first number we put the value of x:

x-9

=27-9

=18.

Therefore, the first number is 18 and the second number is 27.

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3 years ago
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HELP pls What is the equation for the line?<br><br><br><br> Enter your answer in the box.
FrozenT [24]

Answer:

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Step-by-step explanation:

To find the slope, or m, pick 2 points.

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The use the slope formula

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to find the y-intercept, or b, find the point where the line crosses the y-axis, which is (0, 0). Take the y-coordinate, which is 0.

So,

y=8x+0

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3 years ago
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