Answer:
22.5°
Step-by-step explanation:
First we need to figure out the size of the interior angles on the inside.
The formula of figuring out the total degrees of all the interior angles of any shape is (n-2)×180°.
N is the number of sides.
If we substitute our number of sides (8) we get this:
(8-2)×180°
6×180° = 1080°
Then we divide 1080 by 8 since this is a regular octagon (all angles are equal in a regular shape).
1080° ÷ 8 = 135°
Focusing on the triangle now, we now know that the angle on the tip of the triangle is 135° as it has not been split by the line.
Using the rule of angles in a triangle add up to 180°. We do this sum:
180° - 135° = 45°
There are 2 angles left in the triangle so we do:
45° ÷ 2 = 22.5°
Therefore the angle of x is 22.5°.
Answer:
D
Step-by-step explanation:
You would get .40 as the answer and do 3 times .40 to get 1.20 as the answer.
To find the answer, you have to figure out the y-intercept and the slope.
The y-intercept is relatively easy. Look at the graph and locate the spot where the line passes the y axis. It passes at (0, 2), which means that the y-intercept is 2. So, we can eliminate two of the answers.
Now, on to the slope. Slope is the change in y over the change in x, or rise over run. We need at least two points to find the slope. The most obvious ones are the intercepts: (0, 2) and (-1, 0).
Change in y is the difference of the y coordinates: 2 - 0 = 2.
Change in x is the difference of the x coordinates, but this subtraction must be in the same order as the difference of the y coordinates: 0 - (-1) = 1
Change in y over change in x is:
2/1 = 2
So, the slope is 2.
Taking the whole problem, the equation in slope-intercept form is: y = 2x + 2.
The answer is D.
Answer:
volume = length×breadth×height
3×4×4=48in cube
Answer: Some-what. 8 mm on the bottom and 2 mm on the two sides. The triangle is called Isosceles triangle
Step-by-step explanation:
