All categories

3 years ago

PLEASE HURRY I NEED HELP ON MY EXAM! 15PTS!

Mathematics

1 answer:

Wittaler [7]3 years ago

3 0

Answer:

I III and IV

Step-by-step explanation:

It cant be All four since yeah but im really sure that what i put is the answer

You might be interested in

Which is a correct name for the angle shown? А B С Ο <Α 0 O О <СВА

Zinaida [17]

Answer:

<CBA

Step-by-step explanation:

trust:)))))))))))))

6 0

3 years ago

1) Find an equation of the line that passes through the point and has the indicated slope m. (Let x be the independent variable

VMariaS [17]

Answer:

1) The equation of a line is $y=-\frac{1}{2}x+\frac{17}{2}$ .

2) The equation of the line that passes through the points (2,4) and (3,7) is $y=3x-2$

3) The equation of the line that has slope m = −2 and y-intercept equal to -1 is $y=-2x-1$

4) The slope-intercept form of $y-7=0$ is $y=7$ , where the slope is zero and the y-intercept is (0, 7).

Step-by-step explanation:

1) The equation of a line with slope m, passing through the point $(x_1,y_1)$ , is

$y-y_1=m(x-x_1)$

We know that $m = -\frac{1}{2}$ and the point is (1,8). Therefore, the equation of the line is

$y-8=-\frac{1}{2} (x-1)\\\\y-8+8=-\frac{1}{2}\left(x-1\right)+8\\\\y=-\frac{1}{2}x+\frac{1}{2}+8\\\\y=-\frac{1}{2}x+\frac{17}{2}$

2) The equation of a line is typically written as

$y=mx+b$

where m is the slope and b is the y-intercept.

The slope of a line is a measure of how fast the line "goes up" or "goes down" and is given by

$m=\frac{y_2-y_1}{x_2-x_1}$

To find the equation of the line that passes through the points (2, 4) and (3, 7), the first step is to find the slope.

Applying the definition of the slope, we get that

$m=\frac{7-4}{3-2}=3$

Now, we find the y-intercept with the help of point (2, 4) and the general form of the equation of a line

$4=3(2)+b\\b=-2$

The equation of the line that passes through the points (2,4) and (3,7) is $y=3x-2$

3) The equation of the line that has slope m = −2 and y-intercept equal to -1 is

$y=-2x-1$

4) The slope-intercept form of $y-7=0$ is $y=7$ , where the slope is zero and the y-intercept is (0, 7).

3 0

3 years ago

What is the value of x?

Ira Lisetskai [31]

Step-by-step explanation:

4x + 5x = 90°

10x = 90°

x = 90°/ 10

x = 10 (ans)

7 0

3 years ago

What is the exact value of cos 112.5°?

ikadub [295]

We have 112.5 = 225/2; cos112.5 < 0 because 90 < 112.5 < 180;
cos 112.5 = cos(225/2);
We use the trigonometric formula: cos(x/2) = - $\sqrt{ \frac{1+cosx}{2} }$ ;
Then, cos(225/2) = - $\sqrt{ \frac{1+cos225}{2} }$ ;
We have the formula: cos(270 - x) = -sinx (because cos(a-b) = cosacosb + sinasinb);
Then, cos225 = cos(270-45) = -sin45 = - $\frac{ \sqrt{2} }{2} ;$
Finally, cos112.5 = - $\frac{ \sqrt{2- \sqrt{2} } }{2} ;$

3 0

3 years ago

Which of these is equal to 35 (8 – 3)? A. (35 + 8) – (35 + 3) B. (35 × 8 ) + (35 × 3) C. (35 × 8) – (35 × 3) D. (35 × 11)

liq [111]

I think the answer c as I have estimated and this one seems like it’ll make the most sense

6 0

2 years ago