Answer:25800 for 1 hour
Step-by-step explanation:
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Answer:
0.677
Step-by-step explanation:Add up the values in the plan A column. There are 10+12+16 = 38 people who prefer plan A.
Add up the values in the "40-49" row to find that 16+8 = 24 people are ages 40 to 49.
We have 38+24-16 = 46 people who either prefer plan A, are aged 40-49, or fit both descriptions. I subtracted off 16 because those 16 people were counted twice when adding 38 and 24.
An alternative way to get this value of 46 is to add up everything that is in column1 or row 3 (or both). So that would get 10+12+16+8 = 46.
Now add up everything in the table to find out how many people were surveyed total. That would be 10+7+12+15+16+8 = 68 people overall.
The probability of someone liking plan A, or being age 40-49, or both is 46/68 = 0.6765 approximately. Rounding to 3 decimal places gives 0.677
Answer:
6x = 48, 180/z = 90, and 10y + 8 + 138 = 180
Step-by-step explanation:
48 and six x are vertical angles they form a kind of x so they are complementary or equal
180/z and the 90 degree angle are supplementary meaning they add to 180 so 90 minus 180 = 90
the same thing is true for 10y + 8 its supplementay with 138 so 10y + 8 + 138 = 180
The answer is 27.1 degrees. because 11.4+15.7 = 27.1.
