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3 years ago

PLEASE HELP ME............THANKS

Mathematics

2 answers:

Stolb23 [73]3 years ago

6 0

Answer:

i think it's c, I could be wrong djxndnxmmx

Gwar [14]3 years ago

4 0

Answer:

{2,4,9,16}

Step-by-step explanation:

Range are the y values, which are on the right.

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Question 2. Do I divide 9.76 by 8 or the opposite?

schepotkina [342]

It could go either way

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3 years ago

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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

What is the value of x?

Oduvanchick [21]

Answer:

x = 19

Step-by-step explanation:

Vertical angles are equal

7x - 8 = 6x + 11

7x - 6x = 11 + 8

x = 19

7 0

3 years ago

4 questions! Write an equation in slope-intercept form for each of the following:

AysviL [449]

1) y= -4x+c

2) y= 3x+c replace x and y to find c , 5=3(2)+c
C= -1
Y=3x-1

3) find slope first m=y2-y1/x2-x1 = 0-(-1)/-2-1 = 1/-3 and now you have y= -1/3x+c to find c just replace any of the given points , 0= -1/3(-2)+c
C= -2/3 and so y= -1/3x-2/3

4) DO THE SAME STEP AS NUMBER 3 and enjoy!

3 0

2 years ago

Solve for (x) x+15=3x+5

dolphi86 [110]

Answer:

$x + 15 = 3x + 5 \\ 15 - 5 = 3x - x \\ 10 = 2x \\ \frac{10}{2} = \frac{2x}{2} \\ x = 5$

hope this helps....

8 0

3 years ago