All categories

2 years ago

X − y = 12 x + 2y = 21

Mathematics

1 answer:

olga55 [171]2 years ago

5 0

Answer: x=15, y=3

Step-by-step explanation:

Subtracting the two equations, we get -3y=-9, meaning y=3.

Substituting this into the first equation, we get that x-3=12, and thus, x=15.

You might be interested in

To determine the inverse of a point, you?

oksano4ka [1.4K]

So if you're asked to graph a function and its inverse, all you have to do is graph the function and then switch all x and y values in each point to graph the inverse. Just look at all those values switching places from the f(x) function to its inverse g(x) (and back again), reflected over the line y = x.

8 0

4 years ago

What is 5 6/7 + 8 1/14=

Fittoniya [83]

$5\frac{6}{7}+8\frac{1}{14} =13+\frac{13}{14}=13\frac{13}{14}$

<h3><em>Hope I helped you!</em></h3><h3><em>Success!</em></h3>

7 0

3 years ago

2) (-8, -9). (4.-10)

const2013 [10]

Answer: √

145 or 12.04159457 for the decimal ways try 12

Step-by-step explanation: 12.0415945787923

Midpoint (−2,−9.5)

Slope −0.0833333333333333

x intercept −116.00

y intercept −9.67

4 0

3 years ago

Read 2 more answers

At the end of her work day, Rosa leaves her office and goes directly to her bank. On the graph that shows the locations of Rosa'

ikadub [295]

Find the distance between the point of bank and the point of office.

$\sqrt{(x2 - x1)^{2}+ (y2 - y1)^{2}}$
$\sqrt{(-4 - (-6)^2 + (4 - (-3)^2}$
$\sqrt{(2)^2 + (7)^2}$
$\sqrt{4 + 49}$
$\sqrt{53}$

The distance she travels is approximately 7.3 km.

Hope this helps :)

7 0

3 years ago

PLEASE HELP! ITS DUE TODAAY!

Inessa05 [86]

Answer:

center

Step-by-step explanation:

Can I have a thanks, 5 star, brainliest and tell me if right?

6 0

3 years ago

Read 2 more answers