Answer:30 tests
Step-by-step explanation:
16=2/3 -4
20=2/3
10=1/3
30tests
Answer:
230 * (30/100) = 23 * 3 = 69
Step-by-step explanation:
This one can be learned by heart: "what is 30% of 230" means "calculate 30/100 times 230".
Answer:
c
Step-by-step explanation:
For direct variation:
y = kx
-12 = 9k
k = -12/9 = -4/3
Therefore, the required equation is y = -4/3 x
Answer:
477.28cu m
Step-by-step explanation: R (8) x3.14 (pi) is 25.12, 25.12x19=477.28