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3 years ago

5x-15y=45 solve for y

Mathematics

2 answers:

shepuryov [24]3 years ago

7 0

Answer:

y=(0,-3)

Step-by-step explanation:

To find the y-intercept, substitute in 0 for x and solve for y

9966 [12]3 years ago

7 0

Answer:

y = -3 + x/3 sorry i got a mistake from the last one THIS IS THE RIGHT ONE!

Step-by-step explanation:

happy to help! and if u need any help with math, just call me :)

i would help you gladly!

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PLEASE HELP NOW!! thanks:))

algol13

Answer:

I think it is A

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Evaluate f(x) = 4x + 3x^2 − 5 when x = -2. 23 -1 -25 -49

frozen [14]

Answer:

f(-2) = -1

Step-by-step explanation:

One way of doing this is to substitute -2 for x in every place where x shows up:

f(x) = 4x + 3x^2 − 5 → f(-2) = 4(-2) + 3(-2)^2 − 5

→ f(-2) = -8 + 3(4) - 5, or f(-2) = 4 - 5, or f(-2) = -1

5 0

3 years ago

Which of the following is an extraneous solution of the square root of -3x-2=x+2

yarga [219]

Answer:

x=-6 is an extraneous solution

Step-by-step explanation:

we have

$\sqrt{-3x-2} =x+2$

squared both sides

$-3x-2=(x+2)^2$

$-3x-2=x^2+4x+4$

$x^2+7x+6=0$

solve the quadratic equation by graphing

The solution is x=-6 and x=-1

see the attached figure

Verify each solution

substitute the value of x in the original expression

For x=-6

$\sqrt{-3(-6)-2} =-6+2$

$\sqrt{16} =-4$

$4=-4$ ----> is not true

Is an extraneous solution

For x=-1

$\sqrt{-3(-1)-2} =-1+2$

$\sqrt{1} =1$

$1=1$ ----> is true

Is the solution

4 0

3 years ago

Which of the following systems of linear inequalities is represented by the solution graphed below?

sattari [20]

Answer is A, y us smaller/equal to 2 and y is smaller/equal to X

5 0

3 years ago

Southern Florida has a mild climate. Which statement about the probability of snow in June in southern Florida is most likely tr

Allisa [31]

Answer:

The probability of snow is about 0.75

Step-by-step explanation:

5 0

3 years ago