Answer:
Ivan has 42 blue beads.
Step-by-step explanation:
We need to find how many blue beads Ivan has.
Blue beads = 6 times as many as red beans
b = 6r
r + b = 49
r + (6r) = 49
7r = 49
Divide both sides by seven to isolate r
r = 7
b = 6(7)
b = 42
Great, you know that. no need to ask more.
Continental Drift because all continents were once connected by the name of Pangea
Answer:
Option 4.

Step-by-step explanation:
By graphing these we see that these triangles are Similar which means that there corresponding angles measure is equal i-e all angles are equal and hence option 4 is the answer
Answer:
[B] A two-sample t -test for a difference between means.
Step-by-step explanation:
"<u>A two sample t test for a difference in means was conducted to investigate whether the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke</u>."