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choli [55]
3 years ago
6

If 1/2x^2 - 1/4 x + 3 what is the value of x = 8 ?

Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0

Answer:

If x=8 then the equation is equal to 33

If 1/2(x)^2-1/4x=3=8 then x=-2.98 and x=3.35

Step-by-step explanation:

Given:

1/2x^2-1/4x+3

Two solutions possible:

If x=8 then 1/2(8)^2-1/4(8)+3=32-2=3=33

If 1/2(x)^2-1/4x+3=8 then .5x^2-.25x-5=0

factoring:

(.707x+2.11)(.707x-2.37)=0

.707x=-2.11 and .707x=2.37

x=-2.98 and x=3.35 rounded to 2 places

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What is an equation of the line that passes through the point (-1, 4) and is parallel
vesna_86 [32]

Answer:

The answer is

<h2>y + 2x = 2</h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation of the parallel line we must first find the slope of the original line

The original line is 2x + y = 1

We must first write the equation in the general form above

That's

y = - 2x + 1

Comparing with the general equation above

Slope = - 2

Since the lines are parallel their slope are also the same

Slope of parallel line = - 2

So the equation of the line using point

( - 1 , 4) and slope - 2 is

<h3>y - 4 =  - 2(x + 1) \\ y - 4 =  - 2x - 2 \\ y + 2x =  - 2 + 4</h3>

We have the final answer as

<h3>y + 2x = 2</h3>

Hope this helps you

3 0
3 years ago
The point P(x, y) lies on the terminal side of an angle mc014-1.jpg = –60° in standard position. What are the signs of the value
AURORKA [14]
Its  c x<span> is positive, and </span>y<span> is negative.</span>
3 0
4 years ago
What is an equation that uses the distributive property and equals 4
Fed [463]
1/2(2 + 6) is another one boi
7 0
4 years ago
500 - 20x ≥ 200 I need help
alukav5142 [94]

Answer:

x \leq 15

Step-by-step explanation:

5 0
3 years ago
How do you figure out this equation?
maw [93]
Equation of a circle is (x-x1)+(y-y1)=r²
when x1 and y1 are the coordinates of the centre

So you can substitute the centre in to get (x-5)²+(y+9)²=r²

When you draw a diagram it's obvious the radius is 9

9²=81

Therefore equation is (x-5)²+(y+9)²=81

Any questions, just ask :)

6 0
3 years ago
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