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2 years ago

What is the direct variation equation if y varies directly with x and y = -12 when x = 6?

Mathematics

1 answer:

Reika [66]2 years ago

4 0

It would be A because -2 times +6 equals -12

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The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 3 to 2 . If there were

aleksandrvk [35]

Answer:

Step-by-step explanation:

4690/x = 5/2

cross multiply

(4690)*(2)=5*x

9380=5x

Divide both sides by 5.

x=1876

there were 1876 votes of "no"

(brainliest please?)

7 0

2 years ago

An open box is made from an 8 by ten-inch rectangular piece of cardboard by cutting squares from each corner and folding up the

natka813 [3]

Please find the attachment.

Let x represent the side length of the squares.

We have been given that an open box is made from an 8 by ten-inch rectangular piece of cardboard by cutting squares from each corner and folding up the sides. We are asked to find the volume of the box.

The side of box will be $8-x-x=8-2x$ and $10-x-x=10-2x$ .

The height of the box will be $x$ .

The volume of box will be area of base times height.

$\text{Volume of box}=(8-2x)(10-2x)\cdot x$

Now we will use FOIL to simplify our expression.

$\text{Volume of box}=(80-16x-20x+4x^2)\cdot x$

$\text{Volume of box}=(80-36x+4x^2)\cdot x$

Now we will distribute x.

$\text{Volume of box}=80x-36x^2+4x^3$

$V(x)=80x-36x^2+4x^3$

Therefore, the volume of the box would be $V(x)=80x-36x^2+4x^3$ .

6 0

2 years ago

Solve the system of equations and choose the correct ordered pair.

Dafna1 [17]

So for this, I will be doing the elimination method. Firstly, multiply both sides of the first equation by 2:

$6x-8y=52\\2x+8y=-36$

Next, add the two equations together to get $8x=16$ . From here you can solve for x.

For this equation, just divide both sides by 8 and your first answer will be $x=2$

Now that we have the value of x, substitute it into either equation to solve for y:

$3*2-4y=26\\6-4y=26\\-4y=20\\y=-5\\\\2*2+8y=-36\\4+8y=-36\\8y=-40\\y=-5$

<u>In short, the solution is (2,-5), or A.</u>

3 0

2 years ago

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valentinak56 [21]

Really night what's the problem

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2 years ago

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What is 2 multiplying by 10

notsponge [240]

The answer is 20 because any number multiplied by 10 is going to be the same number but with a zero to the right of it for example 20 times 10 is 200 because u just add the zero to the right of the number have a great day

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1 year ago