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qaws [65]
3 years ago
6

Solve for x & y. 30x−42y=−6 and 5x−7y=−1

Mathematics
1 answer:
vladimir1956 [14]3 years ago
4 0
Um.. Both of those equations are the exact same. Divide both sides of the first equation by 6. You get:

\frac{30x  - 42y}{6} = \frac{-6}{6} \\ 5x - 7y = -1

That is the exact same as the second equation. This system has an infinite number of solutions. 5x - 7y = -1 is a line, so basically every point on that line is a solution to the system.

For example, x = 0 and y = \frac{1}{7} would work, but so would x = 1 and y = \frac{6}{7}
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Factored form is (4x+3)(2x+3)
5 0
3 years ago
I dont know<br> How to solve this at all
AlladinOne [14]
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your equation is C=200s+5400


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Y=200x+5400
7 0
3 years ago
Must a function that is decreasing over a given interval always be negative over that same interval? Explain.
kolbaska11 [484]

Answer:

its called common sense

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5 0
3 years ago
Fatima paid a $50. Initiation fee to join a gym. She also pays a fee of $25 per month. Write an expression that shows how much F
Morgarella [4.7K]
When it says per month, it means to multiply. In this case, the expression would be;

25x+50 

So however many months Fatima has spent at the gym, you would multiply that times 25 and add the initiation fee. Hope this helps. 

3 0
4 years ago
Which equation represents the volume of a cone with the same base and height as the cylinder below? A cylinder with a height k a
Igoryamba

Answer: The correct answer is Volume Cone = one-third pi t squared k

Step-by-step explanation: The first important detail to note here is that both cylinder and cone have the same base and the same height This implies that when writing out the formula for calculating the volume of either of the two shapes, the radius and the height will be the same number or value.

The volume of a cylinder is given as;

Volume cylinder = pi x r squared x h (that is πr²h)

Also the volume of a cone is given as;

Volume cone = one-third x pi x r squared x h (that is 1/3*πr²h)

However, the variables have been changed such that the radius r is now represented by t while the height h is now represented by k.

Therefore the volume of the cone should now be re-written as;

Volume cone = one-third pi t squared k <em>(that is 1/3 *πt²k)</em>

3 0
3 years ago
Read 2 more answers
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