3 years ago

Which of the equations below could be the equation of this parabola? A y = 1/6x2 B. x = -1/6y2 C. x = 1/6y2 D. y = -1/6x2

Mathematics

1 answer:

Schach [20]3 years ago

7 0

Answer:

Step-by-step explanation:

assuming the 2s are all squares

just plot a point and it's negative

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What is the area of a triangle with vertices (3,0) (9,0) (7,6)

Nezavi [6.7K]

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

The area of a triangle with three vertices $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ is given by the determinant of the following matrix:

$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (3,0) (9,0) (7,6). So

$A = \pm 0.5 \left|\begin{array}{ccc}3&0&1\\9&0&1\\7&7&1\end{array}\right|$

$A = \pm 0.5(3*0*1+0*1*7+1*9*7-0*7*1-0*9*1-3*1*7)$

$A = \pm 0.5*(63-21)$

$A = \pm 0.5*42 = 21$

The area of the triangle is of 21 units of area.

5 0

3 years ago

12 is 1/2 percent of what number

AVprozaik [17]

Answer:

24 ?

Step-by-step explanation:

50% or .5%?

12*2 = 24

7 0

3 years ago

Read 2 more answers

Solve the equation. у+ 6 = -3y + 26 оооо o y= -8 o y= -5 е у= 5 o y= 8

slega [8]

Y = 5

5+6
11

-3(5) +26
-15+26
11

11=11

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3 years ago

488, 460, 520, 544, 535 What is the range of the data?

n200080 [17]

Answer:

Step-by-step explanation:

To find the range, find the difference between the largest value and the smallest value.

544 - 460 = 84

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3 years ago

F(x) = 3x^2-3x + 1 Find f (-2)

Oxana [17]

Answer:

Step-by-step explanation:

f(x) = 3x^2-3x + 1

Let x = -2

f(-2) = 3( -2)^2-3*-2 + 1

= 3 * 4+6+1

= 12 +6+1

= 19

8 0

3 years ago