Answer:2.78×10^2
Step-by-step explanation:
22+52+424-220
=278
In standard form
=2.78×10^2
Answer:
Convenience sampling
Step-by-step explanation:
When a researcher gives more credence to ease when performing its sampling procedure, such sampling process may be referred to as convenience sampling. As described in the scenario above, rather than having to take a Systematic approach at examining the population so as to decide on the best sampling strategy to employ, the reporter of the student newspaper decides to take the easy path towards gathering the opinion of students by interviewing the first 12 students who are willing to give their opinion without any further consideration. Here, the reporter failed to eliminate any sort of possible bias which may be present, as all was sacrificed for the sake of convenience or ease.
Answer:
-5/24
Step-by-step explanation:
-3/4 = -6/8
-6/8 + 1/8 = -5/8
|-5/8| = 5/8
2/3 = 4/6
4/6 + 1/6 = 5/6
5/8 - 5/6 = 15/24 - 20/24
15/24 + (-20/24) = -5/24
Answer:
150 CDs
Step-by-step explanation:
From the question, we are told that:
28% of Sumiko's CDs are Chinese music CDs.
42% of these are English music CDs The rest are Japanese music CDs.
Let the total number of CDs = 100%
Therefore the percentage of Japanese CDs is calculated as:
100% - (28% + 42%)
100% - 70%
= 30%
There are 45 Japanese music CDs.
Let us represent total number of CDs = x
Hence,
30% of x = 45 Japanese music CDs
Hence,
30/100 × x = 45
30x/100 = 45
Cross Multiplication
30x = 100 × 45
Divide both sides by 30
x = 4500/30
x = 150 CDs
Therefore, the total number of CDs = 150 CDs
Answer:
11 °F
Step-by-step explanation:
The problem explains the last temperature is -7 °F and in the process the temperature dropped 18 °F, we can then make a simple equation for the starting temperature
ST-18°F=FT
ST: starting temperature
FT: final temperature
ST-18=-7
ST=-7+18=11 °F
