3 years ago

Consider the linear system of equations. y = –x + 9 y = 0.5x – 6 If the solution is (a,–1), what is a? a =

Mathematics

1 answer:

timofeeve [1]3 years ago

4 0

Answer:

a = 10

Step-by-step explanation:

From the solution given, x = a and y = -1

Substitute for x and y in either of the equations

y = -x + 9

-1 = -a + 9

a = 9 + 1 = 10

You might be interested in

A circle measures 12 feet in diameter What's its area to the nearest foot?

melomori [17]

Answer:

113.1ft²

Step-by-step explanation:

5 0

3 years ago

Write an equation of the line that passes through (-6.0) and (0, – 24).

Ipatiy [6.2K]

Answer:

y = -4x - 24

Step-by-step explanation:

Firstly, figure out the slope. To do that, plug the coordinates in the formula.

y2 - y1 / x2 -x1

= -24 - 0 / 0 - (-6)

= -4

The slope is -4/1x.

To figure out the y-intercept, you need to plug one of the coordinates into

y = -4x + b

0 = -4(-6) + b

0 = 24 +b

-24 = b

4 0

3 years ago

Read 2 more answers

Pls help in a middle of an exam

KIM [24]

Answer:

$\frac{2x^2+4x-9}{(2x-3)(2x+3)(x-1)}$

Step-by-step explanation:

$\frac{2x}{4x^2-9} + \frac{3}{2x^2+x-3}$ can be simplified to:
$\frac{2x}{(2x-3)(2x+3)}+\frac{3}{(2x+3)(x-1)}$

Make them have common denominators so:
$\frac{(2x)(x-1) +3(2x-3)}{(2x-3)(2x+3)(x-1)}$

Simplify:
$\frac{2x^2-2x+6x-9}{(2x-3)(2x+3)(x-1)} = \frac{2x^2+4x-9}{(2x-3)(2x+3)(x-1)}$

I don't think you can simplify that fraction further so that's the answer.

3 0

2 years ago

Solve the system of equations by graphing.

k0ka [10]

Hope this helps lozzzzzzs

3 0

3 years ago

The laptop was marked down from $895 to $720.

Vedmedyk [2.9K]

Answer:

Wdym?

Step-by-step explanation:

Im confused

4 0

2 years ago