Answer:
230
Step-by-step explanation:
300 - 70 = 270 boom
Triangle ABC and triangle DCE are congruent, so line DE = line AB
Use the cosine rule to find angle ACB






Angle ACB = 48.1°
The answer is B. If you take the even root of a positive number, you'll get two solutions, a positive and a negative
Answer:
7mm
Step-by-step explanation:
A parallelogram has 2 sets of equal sides, so if one side is 7mm, then the opposite side is too.