Ask question

Ask question

All categories

2 years ago

9

How to solve x-y=102x-y=17

1 answer:

oksian1 [2.3K]2 years ago

8 0

X-y=10
2x-y=17
So to start
x=10+y
now replace x in the second equation
2(10+y) -y=17
20+2y-y=17
20+y=17
y=17-20
y=-3
Now replace y with -3 in any equation to find x

x-(-3) = 10
x+3=10
x=10-3
x=7

You might be interested in

Franco read 3/8 of a chapter of his history book in 1/5 of an hour. At this rate, how many chapters of his history book can he r

Irina18 [472]

He can read $1\frac{7}{8}$ chapters of his history book in 1 hour.

<em><u>Explanation</u></em>

Franco read 3/8 of a chapter of his history book in 1/5 of an hour.

Suppose, he can read $x$ chapters of his book in 1 hour at this rate.

So, the equation according to the <u>ratio of 'the chapter to the time'</u> will be....

$\frac{x}{1}= \frac{\frac{3}{8}}{\frac{1}{5}}\\ \\ \frac{x}{1}=\frac{3}{8}*\frac{5}{1}\\ \\ \frac{x}{1}=\frac{15}{8} \\ \\ x= \frac{15}{8}= 1\frac{7}{8}$

So, he can read $1\frac{7}{8}$ chapters of his history book in 1 hour.

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=5y%28%20y%20%2B%203%29%20-%202%28y%20-%202%29%20%3D%2020" id="TexFormula1" title="5y( y + 3) -

Alecsey [184]

Answer:

$y = \frac{ - 13 - \sqrt{489} }{10}$

4 0

2 years ago

Read 2 more answers

A carrot has 5 grams of sugar per serving

malfutka [58]

Answer: The banana has 15.4 grams of sugar per serving while a carrot only has 3 so the banana would be the correct answer

4 0

2 years ago

(3,-5),(3,-2),(3,5),(3,8) find the slope.

crimeas [40]

Answer:

0

Step-by-step explanation:

- Plot each point on the graph corextly using (x,y).

- The line should go verticle

- Since x doesnt change, there is no slope / the line will go up and down infinate

5 0

2 years ago

Simplify: {36 ÷ (-9)} ÷ {(-24) ÷ 6)

olga nikolaevna [1]

Answer:

1

Step-by-step explanation:

{36 ÷ (-9)} ÷ {(-24) ÷ 6}

= (-4) ÷ (-4)

= 1

5 0

2 years ago

Read 2 more answers