Answer: This study uses a control group, this study uses repeated measures design, and this study uses random sampling
Step-by-step explanation:
Answer:

Time for bacteria count reaching 8019: t = 2.543 hours
Step-by-step explanation:
To find the composite function N(T(t)), we just need to use the value of T(t) for each T in the function N(T). So we have that:




Now, to find the time when the bacteria count reaches 8019, we just need to use N(T(t)) = 8019 and then find the value of t:


Solving this quadratic equation, we have that t = 2.543 hours, so that is the time needed to the bacteria count reaching 8019.
Answer:
D. x + 10 pence
Step-by-step explanation:
Since the pen costs 10 pence more than the ruler, we need to add 10 to x.
Answer:
50% reduction in price
Step-by-step explanation:
can be determined by 44- (44× X) solve for x and you get x as .5
Answer:
2
Step-by-step explanation:
2 squared is 4. 3 x 2 = 6. 6+4=10