3 years ago

2x – 3y = 17 –3x + y = –1 solve by elimination

Mathematics

1 answer:

Ad libitum [116K]3 years ago

6 0

Answer:

(-2,-7)

alternatively

x: -2

y: -7

You might be interested in

Change the fraction to a percent:17/50

drek231 [11]

Answer:

34%

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

I need the answer for a= and b=

Lerok [7]

The answer is 67 and 34!

3 0

3 years ago

Click on my profile and answer my unanswered questions plz and thx don't take the points or else u will be reported....thx

kati45 [8]

Answer:

Ok,

Did you know that there was a chicken that went 4 years without a head?

Did you know that it is illegal to chew gum in Signapore?

Step-by-step explanation:

Hope this brightens your day!

4 0

3 years ago

A = √7 + √c and b = √63 + √d where c and d are positive integers.

mrs_skeptik [129]

Answer:

$\displaystyle a:b=\frac{1}{3}$

Step-by-step explanation:

<u>Ratios </u>

We are given the following relations:

$a=\sqrt{7}+\sqrt{c}\qquad \qquad[1]$

$b=\sqrt{63}+\sqrt{d}\qquad \qquad[2]$

$\displaystyle \frac{c}{d}=\frac{1}{9} \qquad \qquad [3]$

From [3]:

$9c=d$

Replacing into [2]:

$b=\sqrt{63}+\sqrt{9c}$

We can express 63=9*7:

$b=\sqrt{9*7}+\sqrt{9c}$

Taking the square root of 9:

$b=3\sqrt{7}+3\sqrt{c}$

Factoring:

$b=3(\sqrt{7}+\sqrt{c})$

Find the ration a:b:

$\displaystyle a:b=\frac{\sqrt{7}+\sqrt{c}}{3(\sqrt{7}+\sqrt{c})}$

Simplifying:

$\boxed{a:b=\frac{1}{3}}$

3 0

3 years ago

Given the two points (2,4) and (-3,2), what is the slope of the line that goes through both of these points?

Andreyy89

With the formula: m=(y1-y2)/(x1-x2) you can sub in the values to get the slope (m).

m=(4-2)/(2-(-3))
= 2/5

Therefore the slope is 2/5.

5 0

3 years ago

Read 2 more answers