Answer:
sometimes true
Step-by-step explanation:
Answer:
21/70=x/30
Step-by-step explanation:
Noticing that it is referring to problem b, we head over to that. It states two important pieces of information. Only seventy percent of the players participated, and 21 total played. This means we can simply divide 21 by 7, and multiply by 10. This shows us that there are thirty total players because 21/7 is equal to 3, multiplied by 10 is equal to thirty. 30 minus 21 is equivalent to 9, meaning 9 players did not play. The proportion we would use for this is 21:70 equal to x:30. Cross-multiply, and we get 70x = 630. x = 9, thus proving our answer is correct.
Answer:

Step by Step
first, I'll divide the big shape into 3 smaller ones. it will be the rectangle on the top (10x8), the square below that (10x10), and the triangle on the right (7x10/2)
if I calculate all, I get 80cm squared, 100cm squared, and 35cm squared.
if I add them all up, I get
80+100+35=215cm squared
If this helped, please consider picking me as Brainliest thank you!
The angles will also always add up to 180 in a triangle.
does this help?