All categories

3 years ago

Solve by addition5x-2y=32x 7y=9

Mathematics

1 answer:

aivan3 [116]3 years ago

5 0

I hope this helps you

7y=9 y=9/7

2y= -27x

2.9/7= -27x

-2/21=x

You might be interested in

Derek reads at rate of 25 words per min. How long would it take him to read a 225 word article if he read at a constant rate wit

Reptile [31]

It would take him 9 minutes.

3 0

3 years ago

Read 2 more answers

Describe the behavior of the function ppp around its vertical asymptote at x=-2x=−2x, equals, minus, 2.

insens350 [35]

Answer:

$x->-2^{-}, p(x)->-\infty$ and as $x->-2^{+}, p(x)->-\infty$

Step-by-step explanation:

Given

$p(x) = \frac{x^2-2x-3}{x+2}$ -- Missing from the question

Required

The behavior of the function around its vertical asymptote at $x = -2$

$p(x) = \frac{x^2-2x-3}{x+2}$

Expand the numerator

$p(x) = \frac{x^2 + x -3x - 3}{x+2}$

Factorize

$p(x) = \frac{x(x + 1) -3(x + 1)}{x+2}$

Factor out x + 1

$p(x) = \frac{(x -3)(x + 1)}{x+2}$

We test the function using values close to -2 (one value will be less than -2 while the other will be greater than -2)

We are only interested in the sign of the result

----------------------------------------------------------------------------------------------------------

As x approaches -2 implies that:

$x -> -2^{-}$ Say x = -3

$p(x) = \frac{(x -3)(x + 1)}{x+2}$

$p(-3) = \frac{(-3-3)(-3+1)}{-3+2} = \frac{-6 * -2}{-1} = \frac{+12}{-1} = -12$

We have a negative value (-12); This will be called negative infinity

This implies that as x approaches -2, p(x) approaches negative infinity

$x->-2^{-}, p(x)->-\infty$

Take note of the superscript of 2 (this implies that, we approach 2 from a value less than 2)

As x leaves -2 implies that: $x>-2$

Say x = -2.1

$p(-2.1) = \frac{(-2.1-3)(-2.1+1)}{-2.1+2} = \frac{-5.1 * -1.1}{-0.1} = \frac{+5.61}{-0.1} = -56.1$

We have a negative value (-56.1); This will be called negative infinity

This implies that as x leaves -2, p(x) approaches negative infinity

$x->-2^{+}, p(x)->-\infty$

So, the behavior is:

$x->-2^{-}, p(x)->-\infty$ and as $x->-2^{+}, p(x)->-\infty$

6 0

3 years ago

Two brothers went shopping at a back to school sale where all shirts and shorts were the same price. The younger brother spent $

Lana71 [14]

145÷14=10.357142857142857143

5 0

3 years ago

Beth works at a grocery store. She earns $8 per hour for her first 20 hours of work in a week. She earns $11 per hour for workin

aleksandr82 [10.1K]

Answer:

the 2nd graph

*this is my first time answering a question xd*

3 0

3 years ago

What is the volume of the rectangular prism? Round your answer to the nearest Hundredth place if necessary.

pochemuha

Answer:

V = l×w×h units³

Step-by-step explanation:

The volume of a rectangular prism is V = l×w×h

6 0

3 years ago