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Verdich [7]
2 years ago
11

Which equation does the graph of the systems of equations solve? 2 linear graphs. They intersect at 0,3

Mathematics
1 answer:
Rainbow [258]2 years ago
4 0

Answer:

D. 2x+3=-8x+3

Step-by-step explanation:

We have been given a graph of system of linear equations and we are asked to choose the system of equations representing the given graph.

Upon looking at our graph we can see that our lines intersect at point (0,3). To find the system of equations represented in the graph we will substitute x=0 in our given equations and see which equation gives us an output of 3.

Let us start with 1st option.

A. -2x+3=8x-3

Upon substituting x=0 we will get

-2*0+3=8*0-3

0+3=0-3

3\neq-3

Since we get 3 on one side of equation and -3 on other side of equation, therefore, option A is not a correct choice.

B. -2x+4=-8x+4

Upon substituting x=0 we will get,

-2*0+4=-8*0+4

0+4=0+4

4=4

Since this system of equations intersect at point (0,4), therefore, option B is not a correct choice as well.

C. 2x+4=8x-4

Upon substituting x=0 we will get,

2*0+4=8*0-4

0+4=0-4

4\neq-4

Therefore, option C is not a correct choice as well.

D. 2x+3=-8x+3

Upon substituting x=0 we will get,

2*0+3=-8*0+3

0+3=0+3

3=3

Since this system of equations intersect at point (0,3), therefore, option D is the correct choice.

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Mark and Trisha are traveling in the same direction and Mark is going 16 miles per hour. Trisha is going 12 miles per hour but s
Lorico [155]

Answer:

32 miles

Step-by-step explanation:

Given data

Let the total distance be x miles

Marks speed= 16miles per hour

Trisha's speed= 12 miles per hour

Trisha has covered 8 miles and has  (x-8) miles to finish line

We know that

Speed= distance/time

time= distance/speed

Hence the time taken for Mark to finish is

time= x/16---------------1

The time taken for Trisha to finish is

time= (x-8)/12-----------2

equate 1 and 2 above

x/16= (x-8)/12

cross multiply

16(x-8)= 12*x

16x-128= 12x

collect like terms

16x-12x= 128

4x=128

x= 128/4

x= 32 miles

Hence they will meet at exactly 32 miles along the way

5 0
2 years ago
What’s the answer for the problems 11-15 in the picture
snow_lady [41]

Answer:

11.

A) EZ Pay Plan=0.15x

B) 40 to Go Plan=0.05x+40

12.

0.15x=0.05x+40

13.

x=400 minutes

14. The solution is the amount of minutes that it takes for both plans to cost the same amount. X has one solution, so it accounts for both equations.

15. EZ Pay Plan

Step-by-step explanation:

For 11, what you need to know is that the slope (coefficient of x) is the price per minute. 0.15 per minute and 0.05 per minute are charged, and therefore are the slope for those equations. The 40 on B is because it is the y intercept. No matter how long you use the object, you will always pay at least 40 dollars.

For 12, you have to find x for the minutes used.

For 13, if you do the process algebraically,

0.15x=0.05x+40  

0.10x=40     (subtracted 0.05x from both sides)

x=400       (divided 0.10x and 40 by 0.10)

For 14, (no explanation)

For 15, if you substitute 200 as x, you would see that the EZ Pay Plan would make you pay 30 dollars while the 40 To Go Plan would make you pay 10+40 dollars, which 30<50.

(sorry for late response)

7 0
3 years ago
Change 90 1/5 to equivalent fraction
vazorg [7]
90 can be written as 450/5 plus the 1/5. Together, it can be written as 451/5.
4 0
2 years ago
A jar is filled with pennies and nickels in the ratio of 5 to 3. There are thirty nickels in the jar, how many coins are there?
Alisiya [41]

Answer:

80 coins

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Help me pleaseeee :/
BartSMP [9]
1.3+-2.4= -1.1 hope I helped :)
8 0
2 years ago
Read 2 more answers
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