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lorasvet [3.4K]
3 years ago
6

Which line has a constant of proportionality between y and x of 1/2​

Mathematics
1 answer:
Serga [27]3 years ago
6 0

Answer:

I think its C

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Which of these equations has a graph that is tangent to the x-axis at one of its intercepts? Choose all the polynomials that hav
Verdich [7]

Answer:

y = ( x + 2)( x + 6)

Step-by-step explanation:

4 0
3 years ago
3 coffees and 4 donuts cost $10.05. In the same cafeteria, 5 coffees and 7 donuts cost $17.15. How much do you have to pay for 4
MakcuM [25]

Answer

You need to pay $14.20 to get 4 coffees and 6 donuts.

Explanation

Let's say that the price of one coffee and x and the price of one donut is y.

In the first instance, 3x+4y=10.05.

In the second instance, 5x+7y=17.15.

You can use these equations to find the value of a coffee and the value of a donut.

We can find x and y using elimination. To do this, you should add or subtract one equation from another to "get rid" of a variable (I'll "get rid" of x). We can't just add or subtract the equations right now, since that wouldn't lead to 0x.

Multiply the first equation by 5, and the second equation by 3. After this, both equations will have 15x. Make sure to multiply each term by 5 and 3.

15x+20y=50.25. This means that 15 coffees and 20 donuts is $50.25.

15x+21y=51.45. This means that 15 coffees and 21 donuts is 51.45.

Now since there are an equal number of coffees, we can subtract these equations.

(15x+21y=51.45)-(15x+20y=50.25) equals y=1.20 (a donut costs $1.20).

Plug the price of the donut into y to find x; 3x+4(1.20)=10.05. The value of x is 1.75. The price of a coffee is 1.75.

You can multiply 1.75 by 4 to find the price of 4 coffees and 1.20 by 6 to find the price of 6 donuts.

1.75*4 is 7.00 and 1.20*6 is 7.20.

You can add those to find the total price; 7.00+7.20=14.20.

5 0
3 years ago
Explain to me in words how you would find the slope of this line
Alchen [17]

Answer:

3

Step-by-step explanation: From one point, go over to the top/bottom of the other point then go down/up to the point (go from one point to the other) then the rise you did (1) over the run across (3) then the formula is rise over run. then divide.

3 0
2 years ago
What is 6 divide by 5
lara31 [8.8K]
Hey there!

6 divided by 5 = 1.2


Hope this helps!
Have a great day! (:
7 0
3 years ago
Find the area of a cube.<br><br> 5in, 5in, 5 in
Verizon [17]

Answer:

150in²

Step-by-step explanation:

The surface area of a cube is given by the following equation where <em>s</em> is the length of a side:

A=6s^2

So, in this case, s is equal to 5:

A = 6(5)^2 = 6(25)=150in^2

6 0
3 years ago
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