Answer:
60%
Step-by-step explanation:
40 ft² is 100%
so, 1% = 0.40 ft²
now we need to ask, how often did 1% fit into the 16 ft².
that means
16 / 0.4 = 16 / (4/10) = (16×10)/4 = 160/4 = 40 %
so, the new, smaller area is only 40% of the original area.
and that means, that the area decreased by 100-40 = 60%
Answer:
-92
Step-by-step explanation:
8 - (10^2)
Answer:
Expenses for purchasing is $245 ,Revenue $479 and Total profit $ 234
Step-by-step explanation:
Cost of two blouses = 2× 25 = $50
Revenue from blouses = 2× 38 = $76
Profit of blouses = 76- 50 = $26
Similarly cost of 3 skirts = 3×15 = $45
Revenue from Skirts = 3×26 =$78
Profit from skirts = 78-45 =$33
Now cost price of pants = 5×30 =$150
Revenue from Pants = 5×65 =$325
Profit from pants = 325-150 = $175
So Jayla's expenses for purchasing = 50+45+150
= $245
Revenue = 76+78+325
= $479
Total Profit = 479 -245
= $234
Answer: He used cluster sampling method and Option 'C' is correct.
Step-by-step explanation:
Cluster is a type of sampling method in which we divide the population into clusters and then sample of clusters is being chosen among them.
Stratified is a type of sampling method in which the researches divides the population into different strata, then randomly chosen the final subject proportionally among the strata.
Systematic is a type of sampling method in which members from a larger population are chosen based on random starting point but it has fixed and periodic interval systematically.
Convenience is a type of sampling method that is non probability sampling method as it is chosen which is close to hand.
According to question, we have an education researcher randomly selects 48 middle schools from across the country and interviews every teacher at each of the selected schools.
So, it forms a cluster in which sample of clusters is being chosen from selected school.
Hence, he used cluster sampling method.
Thus, Option 'C' is correct.
Answer:
2 i think
Step-by-step explanation: