michellectucker1982
15.02.2021 •
Mathematics
There are 34000 adults living in Grand City. In examining attitudes toward the news, a research group asked a random sample of Grand City adults "What is your main source of news?" The results are shown below.
Newspapers 56
Internet 86
Television 128
Radio 20
Other 49
Based on the sample, predict the number of adults in Grand City whose main source of news is newspapers or the radio. Round your answer to the nearest whole number. Do not round any intermediate calculations.
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Ответ:
check the attached
Step-by-step explanation:
56+86+128+20+49= 339
Radio or newspaper
constitute to 76 out of 339
=34000*76/339
7,622 is the total number of adult whose main sources of news are nespaper and radio
Ответ:
It must have the same slope as the given line, so
m = -A/B = -1/-2 = 1/2
So far, we have
y = mx + b = x/2 + b
Use the given point to find b.
4 = -2/2 + b = -1 + b
b = 5
y = x/2 + 5
Multiply through by 2.
2y = x + 10
Standard form:
x - 2y = -10