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2 years ago

Solving systems of equations by graphing

Mathematics

1 answer:

Ipatiy [6.2K]2 years ago

7 0

Answer:

Hi! The correct answer is x = -1 y = -1 and the ordered pair is (-1,-1)

Step-by-step explanation:

~Solve the first variable in one of the equations, then substitute the result into the other equation~

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Find the roots of the parabola given by the following equation 2x^2+5X-9=2x

natta225 [31]

Answer:

$x=-3\:or\:x=\frac{3}{2}$

Step-by-step explanation:

The given parabola has equation

$2x^2+5x-9=2x$

We rewrite in standard form to obtain:

$2x^2+5x-2x-9=0$

$2x^2+3x-9=0$

Split the middle terms to get:

$2x^2+6x-3x-9=0$

Factor by grouping:

$2x(x+3)-3(x+3)=0$

$(x+3)(2x-3)=0$

$x=-3\:or\:x=\frac{3}{2}$

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3 years ago

What’s the radius of the circle

topjm [15]

Answer:

radius=2

Step-by-step explanation:

if the circumference=4pi and the formula is 2pir then r must be 2 and would look like this:

C = 2pir

C = 2pi2

C = 2*2pi

C = 4pi

6 0

2 years ago

suppose you win a contest at the start of 9th grade that deposited $3000 in an account that pays 5% annual interest compound con

tiny-mole [99]

A=pe^rt
A=3,000×e^(0.05×8)
A=4,475.47

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2 years ago

Find the midpoint of (6, 4), and (0,2).

Gnesinka [82]

Answer:

(3,3)

Step-by-step explanation:

Using the midpoint formula:

$m=\left( \dfrac{6+0}{2},\dfrac{4+2}{2} \right)=\left( \dfrac{6}{2},\dfrac{6}{2} \right)=(3,3)$

Hope this helps!

8 0

3 years ago

Read 2 more answers

The original price of a computer game is 45$ The price is marked down by 18$ what percent of the original price is the markdown?

OLga [1]

Answer:

$27

Step-by-step explanation:

$45 - $18 = $27

Percentage 150% (27 divided by 18 = 1.5, shift the decimal right two times and add the zero at the end which gives you 150%)

4 0

2 years ago