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Oksi-84 [34.3K]
3 years ago
12

Solve −2x2 +3x − 9 = 0

Mathematics
1 answer:
luda_lava [24]3 years ago
8 0
-2x^2 + 3x - 9 = 0
The quadratic is not factorable so quadratic formula must be used.
x = (-b + - √(b^2 - 4ac))/2a
a = -2, b = 3, c = -9
x = (-3 + - √(9 - 4*-2*-9))/-4
x = (-3 + - √(-63))/-4
x = -3 + - 3i√7
     --------------
           -4
x = 3 + 3i√7            x = 3 - 3i√7
    ------------                ------------
         4                              4
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3 years ago
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sladkih [1.3K]
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3 years ago
Jennie bought six boxes of pencils for four dollars. How many boxes of pencils can she buy for six dollars?
kap26 [50]

Answer:

9 boxes.

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6 boxes cost 4 dollars

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So  for 6 dollars  you can buy 6 / 2/3

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3 0
3 years ago
I’m so confused on what numbers l should put into the boxes
Serggg [28]

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The lines for the given statements can be plotted as shown below.

<h3>What is the equation of a line?</h3>

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of line is given by,

y =mx + c

where,

x is the coordinate of the x-axis,

y is the coordinate of the y-axis,

m is the slope of the line, and

c is y-intercept.

The lines for the given statements can be plotted as shown below.

The coordinate grid can be filled as,

1)

x        0         3         1

y        3         0         2

2.)

x        0         1         -1

y         1         0          2

3.)

x         0         4         -1

y         -2         0          2

4.)

x         0         1           1

y         -2         0         -2

Learn more about Equation of Line:

brainly.com/question/21511618

#SPJ1

3 0
2 years ago
What is the length of the hypotenuse of the right triangle shown<br> 10<br> 17.8<br> 625<br> 5
Butoxors [25]

Answer:

B. 17.8

Step-by-step explanation:

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c^2 = 196 + 121

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c = √317

c = 17.8

8 0
4 years ago
Read 2 more answers
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