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3 years ago

PLZZZ HELPPP!!!!!!!!!!

Mathematics

2 answers:

miv72 [106K]3 years ago

7 0

Hello!

$\large\boxed{2x + y = 3}$

Begin by finding the slope that would be perpendicular to the given equation.

A perpendicular line has a slope that is the opposite reciprocal of the original. Therefore:

1/2 --> -2

Find the answer choice that contains a slope of -2 when rewritten in the form y = mx + b:

Choice 1:

x + 2y = 2

Move x to the other side:

2y = -x + 2

Divide both sides by 2:

y = -1/2x + 1. This choice is incorrect.

Choice 2:

x - 2y = -12

Move x to the other side:

-2y = -x - 12

Divide both sides by -2:

y = 1/2x + 6. This choice is incorrect.

Choice 3:

2x + y = 3

Move 2x to the other side:

y = -2x + 3. This contains a slope of -2, which is correct.

Choice 4:

y - 2x = -5

Move -2x to the opposite side:

y = 2x - 5. This contains a slope of positive 2, so it is incorrect.

The correct answer is 2x + y = 3.

olga55 [171]3 years ago

4 0

Answer:

D. y-2x=-5

Step-by-step explanation:

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The drama club raised $900 to spend on clothing for club members. They can buy t-shirts for $12 each and sweatshirts for $30 eac

DaniilM [7]

The given question is incomplete and has the following options

1) 35 t-shirts and 15 sweatshirts

2) 32 t-shirts and 18 sweatshirts

3) 25 t-shirts and 20 sweatshirts

4) 22 t-shirts and 22 sweatshirts

5) 15 t-shirts and 25 sweatshirts

Answer:

total money to be spent on clothing = $900

the only possible combination for this will be

25 t shirts and 20 sweatshirts

because 25*12 + 20 * 30 = 900

8 0

3 years ago

Benjamin paints and sells his art work at art shows. He charges $56.25 for a large painting. He charges $25.80 for a small paint

exis [7]

You would mutiply 56.25 x 6 and 25.8 x 3 and get 337.5 + 77.4 and the final answer would be $414.9

6 0

3 years ago

Need help on Homework. Many many Points.

Alex73 [517]

Answer:

Half off is better, you save 5 dollars.

If you don't see how I wrote those equations let me know because that's the main takeaway from this exercise, not as much the other stuff I did below that.

Step-by-step explanation:

Kinda a system of equations problem. Let's set them up.

The first one is buy 1 pair at full price get the scond pair at half price. if we use price of the first as P1 and price of the second as P2 this works out to:

P1 + .5*P2

The second offer is but one pair at ful price then the second has 10 dollars deducted. This will look like:

P1 + P2-10

Let me know if you don't get how I made those expressions. Now you could plug the price the question gives you into both and just see which is smaller, but I'm going to show you when the dals switch with whch is better.

Again, feel free to just plug in what I've given you so far.

The trick is to set them equal to each other.

P1 + P2 - 10 = P1 + .5P2 Subtract P1 from both sides

P2 - 10 = .5P2 divde both sides by .5 (or multiply by 2, same thing.)

2P2 - 20 = P2 add 20 to both sides

2P2 = 20 + P2 subtract P2 from both sdes

P2 = 20

So when P2 equals 20 the deals are the same. if P2 is below 20 the 10 dollas off is the better deal, and if P2 is greater than 20 the half off deal is better.

Since both shoes cost 30 we don't have to pick which is which, and since it is greater than 20 the half off deal is better. Now plug into both equations to find by how much.

P1 + .5P2 = 30 + .5*30 = 45

P1 + P2 - 10 = 30 + 30 - 10 = 50

50-45 = 5

So you save 5 dollars

6 0

4 years ago

Giving brianliest for BOTH answers! <3

Vaselesa [24]

Answers would be D and C im pretty sure

8 0

3 years ago

40(x-2)=2/5(x+4)<br><br><br> Please help

kherson [118]

Answer:

x = 68/33

Explanation:

Step 1: Simplify both sides of the equation.

Step 2: Subtract 2/5x from both sides.

Step 3: Add 80 to both sides.

Step 4: Multiply both sides by 5/198.

8 0

4 years ago