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xz_007 [3.2K]
2 years ago
5

3x + 8y = 7 2x - 2y = -10 what is x and y show work please basically show work

Mathematics
1 answer:
Murljashka [212]2 years ago
8 0

Answer:

so I don't know how to to take an image but I can try to explain

so here it goes

you can use either elimination method or the substitution method if you use the elimination method then you will have to either pick between using the X coordinate or the y coordinate I choose the X coordinate so the top equation multiply by 2 and the lower equation x by 3 you will end up with 6 x plus 16 y is equals to 14 and 6 x - 6y is equals to -30 subtract the both equations and end up with 0 + 22 y is equals to 44 hence

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119 kilometers per hour equals how many miles per hour
kakasveta [241]
You divide the number of kilometers by 0.621371 to get the number of miles per hour. I hope this helped!


8 0
3 years ago
Write an equation to represent function A
maw [93]

Answer:

y = 312x + 2

Step-by-step explanation:

According to y = mx + b, m stands for slope and b stands for y-intercept. Let us find the y-intercept. To find the y-intercept, the x should be zero in (x, y).

(x, y)

(0, 2) ---> y-intercept (b)

Now that we have found the y-intercept, we will now find the slope by using its formula.

Slope formula:-

m = y2 - y1 / x2 - x1

Pick two random (x, y). I will pick the first and last pairs.

(0, 2) and (4, 1250)

Now plug these two pairs in the formula.

m = y2 - y1 / x2 - x1

m = 1250 - 2 / 4 - 0

m = 1248 / 4

m = 312

This means that the slope (m) is 312. Now put that in y = mx + b form.

y = mx + b

y = 312x + 2

Both of the forms are the same. Hope this helps, thank you :) !!

6 0
2 years ago
= Knowledge Check
lbvjy [14]

Answer:

Slope is -3.

Step-by-step explanation:

The equation to get the slope is y2-y1/x2-x1. So, plug in the points to the equation. -7-8/7-3 = -15/5 = -3/1 = -3.

3 0
2 years ago
6x-+5y=-15 in slope intercept form
uranmaximum [27]
6x+5y=-15

5y=-15-6x

y=(-15-6x)/5
6 0
2 years ago
Read 2 more answers
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Alex definitely had the most work done between all of them
7 0
3 years ago
Read 2 more answers
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