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3 years ago

"An unknown integer, multiplied by two times itself, plus two times a different unknown integer, equals negative 20."

1 answer:

8 0

To answer this question, we let the first unknown integer to be x and the second unknown integer to be y. I assume that we are to determine a final expression to show the given statement.The answer would be,
2x² + 2y = -20

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8x + y = 9 Convert the following equations to standard form

Citrus2011 [14]

Answer:

x=1/8y+9/8

y=y=−8x+9

Step-by-step explanation:

Let's solve for y.

8x+y=9

Step 1: Add -8x to both sides.

8x+y+−8x=9+−8x

y=−8x+9

Let's solve for x.

8x+y=9

Step 1: Add -y to both sides.

8x+y+−y=9+−y

8x=−y+9

Step 2: Divide both sides by 8.

8x/8=−y+9/8

x=−1/8y+9/8

5 0

3 years ago

How to find the square root of 56 without using a calculator

Olegator [25]

There an old algorythmic method similar to long division:-

7 . 4 8 3
-----------------
) 56. 00 00 00
7 ) 49
  ) ---
   144 ) 7 00
) 576
----
148 8 ) 12400
) 11904
-------
) 496 00
1496 3 ) 44889

THis gives the square root as 7.48 to the nearest hundredth

7 0

3 years ago

Read 2 more answers

Solve for x pls help

marusya05 [52]

Answer:

your answer will be 2

Step-by-step explanation:

19-17=2

4 0

2 years ago

There are 25 marbles, 5 are red, 5 are blue, 5 are green, 5 are yellow, and 5 are purple. Picking one without looking, what is t

Dvinal [7]

Even chance/possibly with all the other colors
because there is 5 of each colour making it not so likely to pull one color more then the other but less likely of not pulling that color at all

hope this helps

7 0

3 years ago

Read 2 more answers

(9r^2+4r-7)+(3r^2-3r)

bixtya [17]

Answer:

12r2+r−7

Step-by-step explanation:

hope it helped

8 0

2 years ago