The measure of the angle that represents 
of a circle is 45°
Step-by-step explanation:
Let us revise some important rules in a circle of radius r
- The length of the circle is 2πr
- The measure of the circle is 360°
∵ An angle represent of a circle
∵ The measure of the circle is 360°
- The measure of the angle is of the measure of the circle
∴ The measure of the angle = × 360°
∴ The measure of the angle = 45°
The measure of the angle that represents of a circle is 45°
Learn more:
You can learn more about the circle in brainly.com/question/2860697
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(1) y= - x² - 4x + 9 and (2) y + 5x = - 7. Isolate y in (2); y= - 5x - 7 (3)
Since (1) and (3) have the same value or the same y, then we can write:
(1)=(3)
- x² - 4x + 9 = - 5x - 7
-x² - 4x + 9 + 5x +7 = 0
-x² + x + 16 = 0 OR x² - x - 16 = 0
Solve this quadratic equation:
x' = [-b+√(b²-4ac)]/(2a) and x" = [-b-√(b²-4ac)]/(2a)
x' = [+1+√(-1)² - 4(1)(-16)]/2 → x' = [1+√(1+64)]/2 → x' = [1+√65)]/2
x" = [+1-√(-1)² - 4(1)(-16)]/2 → x' = [1-√(1+64)]/2 → x' = [1-√65)]/2
x' = [1+√65)]/2 = + 4.5311
x" =[1-√65)]/2 = - 3.5311
1. 14 - 25/p
2. 3w + 4t
3. 13m + 14n
4. 2a . 5b
Answer:
104,805 i think
Step-by-step explanation:
Answer:
The Answer is option A) .( 6 , -7 )
