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3 years ago

X-y=2 and x+y=-2 sove by graphing please and show the solution

Mathematics

1 answer:

eimsori [14]3 years ago

5 0

Answer:

The answer to your question is There is only one solution (0, -2)

Step-by-step explanation:

Data

Equation 1 x - y = 2

Equation 2 x + y = -2

Solve for y

Equation 1 y = x -2

y = x - 2

Equation 2 y = - x - 2

See the graph below

These lines cross in point (0 ,-2), that is the only solution.

If the lines have not crossed, they were parallel lines.

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¿Por qué un conjunto numerable es una función biyectiva?????

WITCHER [35]

En matemáticas, un conjunto contable es un conjunto con la misma cardinalidad (número de elementos) que un subconjunto del conjunto de números naturales. Un conjunto contable es un conjunto finito o un conjunto contable infinito.

8 0

3 years ago

SOLVE THIS PLS JSJSXHHX

madam [21]

Step-by-step explanation:

y = ax + b

I see already the result (y = x/10 × 1/6), but let's go in formally.

we have multiple function points to use to officially calculate a and b.

1/6 = a×10 + b

2/3 = a×40 + b

5/6 = a×50 + b

1 2/3 = a×100 + b

let's e.g subtract equation 1 from equation 3.

4/6 = a×40 + 0

a = 4/40 / 6 = 4 / 240 = 1/60

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1/6 = 1/6 + b

b = 0

so, the function is

y = x/60

x = 25

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5 0

2 years ago

working together Jacob and Kayla can clan an attic in 4.24 hours. had she done it alone it would have taken Kayla nine hours. ho

Marizza181 [45]

That’s not enough information to say how long he could do it. He could go slower or faster than her but by how much if so. So it’s not enough info.

5 0

3 years ago

A bag contains 6 black marbles and 4 white marbles. Sally takes out a black marble and does not put it back. What is the probabi

Neko [114]

Answer:

$\frac{5}{9}$

Step-by-step explanation:

$Total\ marbles=10\\\\Black=6\\\\White=4$

After removing one black marble:

$Total\ remaining\ marbles=9\\\\Remaining\ Black=5\\\\P(Black)=\frac{Remaining\ Black\ marbles}{Total\ remaining\ marbles}\\\\P(Black)=\frac{5}{9}$

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2 years ago

E B 30 24 25 20 А 15 с D 18 F The scale factor is

Finger [1]

Answer:

5:6

Step-by-step explanation:

20/4=5

24/4=6

20:24 ratio simplified is 5:6

sorry if wrong

3 0

2 years ago