3 years ago

What is the slope of the line that passes through the points (−4,−1) and (18,−2) ?

Mathematics

1 answer:

Tatiana [17]3 years ago

7 0

Answer:

Step-by-step explaination:

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Which is the best first step and explanation for solving this system of equations?

Volgvan

Answer:

x=-4/9, y=10/3. (-4/9, 10/3).

Step-by-step explanation:

3x+4y=12

3x=2y-8

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

2y-8+4y=12

6y-8=12

6y=12+8

6y=20

y=20/6

simplify,

y=10/3

3x=2(10/3)-8

3x=20/3-8

3x=20/3-24/3

3x=-4/3

x=(-4/3)/3

x=(-4/3)(1/3)=-4/9

x=-4/9, y=10/3. (-4/9, 10/3).

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3 years ago

-5X^2 + 3X = -3X^2 + 3X - 50 solve for x

zhenek [66]

$-5x^2+3x = -3x^2 +3x -50\\\\\implies 5x^2-3x^2 +3x-3x -50 =0\\\\\implies 2x^2 -50 =0\\\\\implies x^2 -25 = 0\\\\\implies x^2 = 25\\\\\implies x = \pm5\\\\\text{Hence}~ x = 5~ \text{or}~ x = -5$

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2 years ago

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Joe and Linda have the opportunity to purchase a new home. The house in Glen Oaks is currently worth $250,000 but is predicted t

Dmitry [639]

You can work out the percentage change and that would help you work out the rate of appreciation :)

The formula is ((new value - old value)/old value) * 100.

So you do $\frac{270,000 - 250,000}{250,000} \times 100 = 8\%$

Therefore the rate of appreciation is 8% p/a.

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2 years ago

Fiften increased by a number

tiny-mole [99]

Answer:

15+n

Step-by-step explanation:

Let the number be 'n'

Fifteen=15

increased by= +

a number= n

Hope this helps ;) ❤❤❤

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3 years ago

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What do I do on this problem please help

insens350 [35]

(-1.0) (-4,-1) (-1,-5) hopefully this helps (x,y)

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3 years ago