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Fynjy0 [20]
4 years ago
13

Please help!!! It's about the types of quantities if they are proportional or not if there is a constant number.

Mathematics
1 answer:
alekssr [168]4 years ago
7 0
1. Yes, because y=kx. “Y” is equal to 4 × “x”, on every problem. y=4x
2. No, because on the first set of numbers 3 and 15 the equation is Y=5x. Then on the second set of numbers 4 and 17 the equation is Y=4.25x.
3. Yes, because Y=1.5x.
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Last weekend, Lexie spent 1/2 of her money on the movies and 1/4 of her money on food. She has $7.50 remaining. How much money d
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It is 60 dollars because you work backwards so you multiply 7.50 by 4 and 2. 
7 0
4 years ago
What is the answer for x? <br><br> X+3=5​
svlad2 [7]

Answer: X = 2

Step-by-step explanation: To find the value of "X" in this equation, we first need to subtract 3 from both sides.

Image provided.

3 0
4 years ago
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Identify the x- and y- intercept of the function f(x)=2x^2+5x-3
ycow [4]
0 = 2x^2 + 5x -3
0 = (2x-1)*(x+3)
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6 0
4 years ago
Evan works part time for his father and gets paid $8.25 per hour. He works 4 hours. Then he spends 1/3 of his money on a game. H
lianna [129]

Answer:

$22

Step-by-step explanation:

($8.25x4)x2/3

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5 0
3 years ago
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The Northwest High School senior class decided to host a raffle to raise money for their senior trip. They charged $2 for each s
prisoha [69]
Let x be the tickets that the adults bought, andy be the tickets that children bought.
From the problem we have the system of linear equations:
\left \{ {{2x+5y=2686} \atop {y=3x}} \right.

The first thing we are going to do to solve our system, is replacing equation (2) in equation (1), and  then, solve for x
2x+5y=2686
2x+5(3x)=2686
2x+15x=2686
17x=2686
x= \frac{2686}{17}
x=158

Now that we have the number of tickets that the adults bought, lets replace that value in equation (2):
y=3x
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Last but not least, to find the total number of tickets, we are going to add x and y:
158+474=632

We can conclude that <span>Northwest High School's senior class sold 632 raffle tickets.</span>
7 0
3 years ago
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