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3 years ago

NEED HELP ASAP y=2x+2 and y=2x-4

Mathematics

1 answer:

Eduardwww [97]3 years ago

3 0

Original function:

y = 2x

Added 2 to the original function:

y = 2x + 2, this shifted the graph 2 units up

Subtracted 4 from the original function:

y = 2x - 4, this shifted the graph 4 units down

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he seven problems, which were announced in 2000, are the Riemann hypothesis, P versus NP problem, Birch and Swinnerton-Dyer conj

solniwko [45]

Answer:

Huh these are the world's on solved problems

Step-by-step explanation:

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2 years ago

The ordered pair (1, -5) is a solution for the system x + 2y = -9 and x - y = 6. true false

sweet [91]

In an ordered pair, x is the first number and y is the second number. So this is telling you x=1 and y=-5. You can take this information and plug it into the formulas.

x + 2y = -9
1 + 2(-5) = -9
1 + -10 = -9? True

x - y = 6
1 - -5 = 6? *
1 + 5 = 6? True.

(*Subtracting a negative makes it a positive.)

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3 years ago

Solve for x and y 1/(x+yi) + 2/(x-yi) = 1+i

aliina [53]

Answer:

Step-by-step explanation:

x+i*y≠0 ==> x≠0 and y≠0

x-i*y≠0 ==> x≠0 and y≠0

We must exclude (0,0) as solution.

$\dfrac{1}{x+i*y} +\dfrac{2}{x-i*y} =1+i\\\\\dfrac{1*(x-i*y)}{(x+i*y)(x-i*y)} +\dfrac{2*(x+i*y)}{(x-i*y)(x+i*y)} =1+i\\\\\\\dfrac{x-i*y+2x+2i*y}{x^2+y^2} =1+i\\\\3x+i*y=(1+i)(x^2+y^2)\\\\3x+i*y=(x^2+y^2)+i(x^2+y^2+i*(x^2+y^2)\\\\\left\{\begin{array}{ccc}3x&=&x^2+y^2\\y&=&x^2+y^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\3x&=&x^2+9x^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\x(10x-3)&=&0\\\end {array}\right.\\\\$

$\left\{\begin{array}{ccc}x&=&0\\y&=&0\\\end {array}\right.\ (to\ exclude) \ or \ \left\{\begin{array}{ccc}x&=&\dfrac{3}{10}\\\\y&=&\dfrac{9}{10}\\\end {array}\right.\\\\Sol=\{(\dfrac{3}{10},\dfrac{9}{10})\}\\$

4 0

3 years ago

6. Jesse roasted 12 marshmallows in 4 minutes. How many marshmallows could she roast in 7 minutes?

just olya [345]

Answer: 21

Step-by-step explanation: 12 in 4 minutes means every minute 3 marshmallows are roasted, 4x3=12, so add three more minutes and you get 21. 7x3=21

6 0

2 years ago

Read 2 more answers

1.4x+1.1=8.3-x Explain your answer

IgorLugansk [536]

Answer:

x=3

Step-by-step explanation:

1.4x+1.1=8.3-x

1.4x+x=8.3-1.1

2.4x=7.2

x=7.2/2.4

x=3

6 0

3 years ago