Answer:
Step-by-step explanation:
30t - 5t² = 10
5t² - 30t + 10 = 0
t = [30 ± √(30² - 4 ⋅ 5 ⋅ 10)] / [2 ⋅ 5]
= [30 ± √700] / 10
= [30 ± 10√7] / 10
= 3 ± √7
≈ 0.35 seconds and 5.65 seconds
247x82=534 5 go in the hundreads place 3 go in the tens place and 4 go in the ones place
Answer:
11. D
12. C
Step-by-step explanation:
11. We need to find 2 numbers where the sum is -15 and the product is 56. Those two numbers are -7 and -8 so the answer is D.
12. Like the previous problem, we need to find 2 numbers where the sum is -9 and the product is 14. Those two numbers are -2 and -7 so the answer is C.
Answer:
The sample is a Simple Random sample.
explanation:
A simple random sample is the process where there is equal chance of selecting each member of a population to form a sample. in the example stated in the question there are equal chances of selecting every ticket among the five hundred ticket of the participant so as to form another set of ten tickets that win a prize.
