Answer:
Step-by-step explanation:
The identical arc symbols on the two angles indicates the angles are congruent. Also, these are alternate interior angles where a transversal crosses lines marked as parallel, so they are congruent:
∠A = ∠B
8x +78° = 2x +114° . . . . . substitute the given expressions
6x = 36° . . . . . . . . . . . . . subtract 2x+78° from both sides
x = 6° . . . . . . divide by 6
∠B = 2x +114° = 2·6° +114° . . . . . put the value of x into the expression
∠B = 126°
When a square root of an expression is multiplied by itself, the result is that expression
-10 x 2 x 15
Calculate the product
-300
Answer:
x=-1 or (-1,0)
Step-by-step explanation:
(-4 +- sqrt(4^2-4(5)(-1)))/2*5
(-4 +- sqrt(16+20))/10
(-4 +- sqrt(36))/10
(-4 +- 6)/10
x= (-4+6)/10 = 2/10 = 1/5 = 0.2
x= (-4-6)/10 = -10/10 = -1
x-intercepts: (0.2,0), (-1,0)
π
180
∘
Answer:
332.5
Step-by-step explanation:
I got the answer from khan academy, so I am assuming it's right, although I have no idea how to do it considering I was worng.
The answer is 50
BEC=25
BC=12.5 (half of 25)
12.5 x 4 (number of triangles)=50