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inysia [295]
3 years ago
10

Find the intersection between thelines 2x + 3y = 5 and 3x + 4y = 6

Mathematics
1 answer:
Archy [21]3 years ago
4 0
An intersection point, is a shared coordinate. If the equations share a coordinate we can say they are "equal". There are two ways (algebraically) to find this point. Substitution or linear combination. Because the coefficients are different, let's use linear combination

First stack the equations on top of each other.

2x + 3y = 5
3x + 4y = 6

Next let's manipulate one or both of the equations to get coefficients that are equal, but opposite. For this I'm going to turn the coefficient of x into 6 and -6 respectively by multiplying the first equation by 3 and the second by -2 to get 

6x + 9y = 15
-6x -8y = -12

Now we can combine the equations with addition and the x's will cancel leaving a single variable (which we can solve)

y = 3

Now plug this back into either original equation to find the x coordinate.

2x + 3(3) = 5

2x + 9 = 5

2x = -4

x = -2.

So your intersection point is (-2,3)
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Answer:

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2 A. spherical coordinates

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Step-by-step explanation:

USE THE BOUNDARY INTERVALS TO IDENTIFY

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3. ∭E z dV where E is:

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4. ∫10∫y^20 1/x dx  ---- This is A CARTESIAN COORDINATES

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6 0
2 years ago
In the table, hoe many cups of flour would you need to make 90 cookies? Graph the relationship below
-Dominant- [34]
Not sure what we need to do for this question, as it appears that you have already completed it, but looking over your answer, the graphed relationship looks correct! And it would take 3 cups of flour to make 90 cookies, as per the table.
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Alex_Xolod [135]

Answer:

D or the last one.

Step-by-step explanation:

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6 0
2 years ago
Read 2 more answers
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