Answer:
21
Step-by-step explanation:
We know that the sqaure root of 121 = 11.
So, A - 10 = 11
=> A = 21
Answer:36
Step-by-step explanation:
I actually just answered this problem on a website the answer is 36.
Answer: 7 1/2
Step-by-step explanation:
Answer: 1,000 times longer
Step-by-step explanation: Dino have been extinct for about 60 million years ago, and Neanderthals have been extinct for about 40,000 years.
60,000,000 divided by 40,000 is 1500 so 1000 times longer (sorry if im wrong i'm new)
the marked angles are complementary → B
All 3 triangles are right with one angle = 90°
the sum of the angles in a triangle = 180°
thus the remaining 2 marked angles sum to 90°, thus are complementary
