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3 years ago

For what value of a do the lines 5x–2y=3 and x+y=a intersect at a point on the y-axis?

Mathematics

1 answer:

inna [77]3 years ago

5 0

Answer:

a = -3/2

Step-by-step explanation:

You can set x=0 and solve for y to find the y-intercept in each case.

first equation: y-intercept = -3/2

second equation: y-intercept = a

To make these equal, we must have ...

a = -3/2

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This is 8th grade math can someone PLEASE answer number 9

spin [16.1K]

8) y intercept is (0, 15) or 15

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9) y=10x+15

10) you can look at the graph where it says number of games and go to 6 and go up until you reach the line and look at the side where it says cost (dollars) and then you will see that 6 games cost $75

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3 years ago

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Tomtit [17]

Answer:

3:17

Step-by-step explanation:

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2 years ago

Kendra has $ 7.35 in nickels and quarters. If she has 15 more quarters than nickels, how many of each coin does she have?

lozanna [386]

x*5 - quarter amount

(x+15)*25- nickels amount

(x*5)+((x+15)*25)=735

5x+25x+375=735

30x=735-375

30x=360

x=360/30=12 - number of nickels

x+15=12+15=27 - number of quarters

CHECK

12*5=60 ¢

27*25=675 ¢

675+60=735 ¢ or $7.35

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4 years ago

Write an equation in point-slope form for the line that passes through the point with the given slope. point: (4,2) and m=3

Masja [62]

Answer:

I think the answer is y = 3x - 10

Step-by-step explanation:

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3 years ago

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3 years ago