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pickupchik [31]
3 years ago
6

In a triangle ABC, AB:BC is 5:9. On the triangle AB=15 and BC=5x+2. Write a proportion and solve for the variable

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0
If AB is 15, then BC is 15*9/5=27.  Therefore, we can write the equation 5x+2=27.

We subtract by 2 to find that 5x=25, and divide by 5 to see that x=5.
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Express the equation x = 10 and y = -3 as a linear equation in two variables
34kurt

Answer:

For x = 10:

x + 0y - 10 = 0

For y = - 3:

0x + y + 3 = 0

Step-by-step Explanation:

Before we start let's recall the formula for the linear equations.

ax + bx = c

So first let's solve for x=10:

x = 10

Move 10 to the other side.

x - 10 = 0

As there is no y given we will simply write 0y.

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Now let's solve for y=-3:

y =  - 3

Move -3 to the other side.

y + 3 = 0

As there is no x given we will simply write 0x.

0x + y + 3 = 0

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