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Liula [17]
3 years ago
7

The sum of two numbers is 20. Their difference is 4. What are the numbers? Use the variable A & B

Mathematics
2 answers:
Phantasy [73]3 years ago
6 0

Answer:

Step-by-step explanation:

A+B=20

12 and 8

There is a difference of 4 between them and they add up to 20.

Arturiano [62]3 years ago
3 0

Answer:

x + y = 20

x - y = 4

Add the 2 equations and get

2x = 24

x = 24/2 = 12

Plug x=12 into either equation and get

y = 8

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I need help on number 8​
tester [92]

Answer:

(-3,5) (-3,4)

5-4/-3--3=1/0

It is a vertical line so it's y∈R

Step-by-step explanation:

5 0
3 years ago
Written in simplest form, the expression (x^2)(y^2)-9 over 3-xy is equivalent to
Ilya [14]
((x^2)(y^2) - 9) *(3 - xy).

Note difference of two squares:  (a^2 - b^2) = (a-b)(a+b)
(x^2)(y^2) - 9 = (xy)^2  - 3 ^2 = (xy - 3)(xy + 3).    (Take note)

(3- xy) = -(xy - 3).    (Take note of this also)

Your question said:  ((x^2)(y^2) - 9) times (3 - xy),
Don't you think it should be divide? Would solve it as divide.

((x^2)(y^2) - 9) /(3 - xy)  =  (xy - 3)(xy + 3) / -(xy - 3)

                                  =  -(xy + 3).

Answer is (3). Solved it as divide. Using times gives none of the solution among the options.
Cheers.
3 0
3 years ago
Eden rose?<br>How are u today?<br>I hope ur fine<br>Whats ur favorite animal?<br><br> ​
Drupady [299]
Dude this app is for homework purposes. Not to chat with people.
8 0
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Luda [366]
The answer is C because it would be equal to 8 if you change it to multiplication
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3 years ago
What kind of solid is a circle
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