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3 years ago

Find the slope of the graph of the equation 3x + 15y = 25 (Please show your work)

Mathematics

2 answers:

pantera1 [17]3 years ago

3 0

Answer:

y= - 1/5x + 5/3

olchik [2.2K]3 years ago

3 0

Solve for y. First move 3x over to the right by subtracting it from both sides. Then you have 15y=25-3x, and then you need to divide both sides by 15 to get y by its self. That gives you y=3/5-1/5x, and you change it to y= -1/5x+3/5

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the brightness of the illumination of an object varies inversely as the square of the distance from the object to the source of

Free_Kalibri [48]

I=k/d^2

4=k/d^2 and 1=k/64 so if we divide the first by the second we get:

4/1=(k/d^2)/(k/64)

4=(k/d^2)*(64/k)

4=64/d^2

d^2=64/4

d^2=16

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3 0

2 years ago

Coach Jamison wants to celebrate the final win of the school's baseball season with a trip to the local fast food place. The tea

PIT_PIT [208]

So we have 2 variables here: tacos and orders of nachos.

When we translate the paragraphs into equation: $28t + 27n = 114.80 \\ \\ 12t + 3n = 37.20$

Now, in this situation we can make use the elimination method by converting 3n to -27n.

$- 108t - 27n = - 334.8$

Add both equations: $28t + 27n - 108t - 27n = 114.8 - 334.8 \\ \\ - 80t = - 220 \\ \\ t = 2.75$

So we find that one taco costs $2.75.

We can plug this into any of the first two equations to find n: $12 \times 2.75 + 3n = 37.2 \\ \\ 33 + 3n = 37.2 \\ \\ 3n = 4.2 \\ \\ n = 1.4$

So one order of nachos cost $1.40.

4 0

2 years ago

13x + 4 + 10x - 1 = 141

Anna007 [38]

Answer:

x=6

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Garrett works for a company that builds parking lots the graph shows the area of a parking lot based on the length of one side.

dedylja [7]

Answer: Option D.

Step-by-step explanation:

this is a quadratic equation of the form:

y = ax^2 + bx + c

First, things you must see.

The graph opens up, so we must have thata a is greater than zero, so we can discard the first option.

Second, we can see that the vertex is located in x ≈ 70

The vertex of a quadratic equation is: x = -b/2a

so we have:

70 = -b/2a

let's try our options and see if we can discard other:

-b/2a = 69.9/2 = 34.95

we can discard this option.

-b/2a = 78/2 = 39 we can discard this option.

-b/2a = 69.9/2*0.5 = 69.9

This is the only one that fits, so this is the correct option.

8 0

2 years ago

How to round to the naerst 10?

Blababa [14]

So, say your # was 6,234,578. you would go to the seven and look to the number next to in, so 8, and if the neighbor is 5 or bigger, you make the number, in this case a 7 an 8. Last, you make all the other #s after the one you rounded 0. So the answer would be:

6,234,570.0

3 0

3 years ago