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4 years ago

Is 2y=-8x a direct variation

1 answer:

8 0

Yes. y=kx is the direct variation formula. y=-4x is the simplified form of your equation, which is direct because it fits in the y=kx style.

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Please help Find the difference (5ab-7a-9) - (8ab-2)

Rudiy27

(5ab-7a-9) - (8ab-2)
5ab - 7a - 9 - 8ab + 2
-3ab -7a -7

7 0

3 years ago

Help help help please please

Vsevolod [243]

The answer is 10 miles

3 0

3 years ago

Find the solution(s) to (x- 3) = 49. Check all that apply.

natima [27]

Answer:

B.x= -4 and E. x= 10 are the answers

4 0

3 years ago

Gus has a fish tank that holds 47104710 inches^3 3 of water. He is using a cylinder shaped bucket with a radius of 55 inches and

Darya [45]

Answer: 3 times.

Step-by-step explanation:

Here, The Volume of the gas tank = 4710 $in^3$

While, The radius of the cylindrical shaped bucket = 5 in

And, Height of the cylindrical shaped bucket = 20 in

Therefore, The volume of the bucket = $\pi \times r^2\times h$

= 3.14 × 5 × 5 × 20 = 1570

According to the question, cylinder shaped bucket is used to fill the tank.

Thus, The number of times the bucket will be used to fill the tank

= The Volume of the gas tank/ The volume of the bucket = 4710/1570 = 3

Therefore, The bucket will be used three times to fill the tank.

5 0

3 years ago

Bob took his family out to lunch. He bought 3 hot dogs and 2 hamburgers for $11. If the guy in front of him bought 2 hot dogs an

Dafna11 [192]

Answer:

Hotdog: $1.50

Hamburger: $3.25

Step-by-step explanation:

You write down the 2 equations based off of the information as I did:

Let x = cost of a hotdog

Let y = cost of a hamburger

and so:

3x + 2y = 11

2x + 4y = 16

Now, we need to find x and y:

We will make both equations equal to y to compare them to each other.

2y = 11 - 3x

y = 5.5 - 1.5x

4y = 16 - 2x

y = 4 - 0.5x

4 - 0.5x = 5.5 - 1.5x

x = $1.5

Now plugging in x into the equation:

2(1.5) + 4y = 16

3 + 4y = 16

4y = 13

y = $3.25

And so hotdog = $1.5 and hamburger = $3.25

6 0

3 years ago