Angle D is equal to Angle B because AB and DE are parallel to each other.
AD is a straight line so the (2) 2x angles and 72 degrees need to equal 180.
Setting up the equation you have:
2x + 2x + 72 = 180
Simplify:
4x + 72 = 180
Subtract 72 from each side:
4x = 108
Divide both sides by 4:
x = 108 / 4
x = 27
Answer:
A repeating decimal...
Step-by-step explanation:
Because the numbers after the decimal points keep repeating.
Answer:
16
Step-by-step explanation:
Area = perpendicular height * base
= DP * CB
= √[(2 - -1.2)^2 + (-5 - (-3.4)^ ] * √[(2 - 0)^2 + (3- -1)^2)]
= √(12.8.) * √(20)
= 16
=
Answer:
- -6x² - 6 = -7x - 9
- -6x² + 7x - 6 + 9 = 0
- -6x² + 7x + 3 = 0
- 6x² - 7x - 3 = 0
<u>Discriminant:</u>
- D = (-7)² - 4*6*(-3) = 49 + 72 = 121
<u>Since D > 0, there are 2 real solutions:</u>
- x = (- (-7) ±√121 )/12
- x = (7 ± 11)/12
- x = 1.5, x = -1/3
