3 years ago

How do work 3x-2y=3 and 5x-5y=10

1 answer:

4 0

Those equations are in standard form. to graph them you need to put it in y=mx+b form, also known as slope intercept form. if they are a system of equations and u have to fins where they intersect then put it in slope intercept form and see the point where they meet. if they are separate and u only need to graph each of them again, they need to be in slope intercept form. 3x-2y=3 is y=3/2x+3 and 5x-5y=10 is y=x+3 if you put it in slope intercept form.

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Ainat [17]

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7 0

2 years ago

At the local pet store, zebra fish cost $2.00 each and neon tetras cost $2.15 each. If Ernesto bought 15 fish for a total cost o

bezimeni [28]

So first create and define your variables:
Z = amount of zebra fish
N = amount of neon tetras

Now create your equations:
2z+2.15n=31.20
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This is your system. There are multiple methods to use but in this problem I’ll use the substitution method by simplifying the bottom equation.
2z+2.15n=31.20
z=15-n
Now I’ll plug the bottom equation into the top one.
2(15-n)+2.15n=31.20
And just solve from here.
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6 0

2 years ago

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If theta is an acute angle and sin=1/2 , then cos theta =

lilavasa [31]