Answer:
20z-6
Step-by-step explanation:
Distribute the 2 to each of the numbers inside the parentheses.
10z and -3 are the two numbers, each multiplied by 2 is 20z and -6. No further simplification is possible
*****
x + 3y - 5
-2x + 2y = 14
Answer:
y = 3
x = -4
Step-by-step explanation:
Hopefully the first equation is x + 3y = 5
x = 5 - 3y
Plug in:
-2(5 - 3y) + 2y = 14
-10 + 6y + 2y = 14
8y = 24
y = 3
x = -4
The value of the given expression for the given value is 18.
Given that, x=2 and y=3.
We need to find the value of xy².
To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.
Now, xy²=2×3²
=18
Therefore, the value of the given expression for the given value is 18.
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Answer:
if it is
xy² then 2*3²= 18
if (xY)²=6²=36
Step-by-step explanation:
Answer: 5/33
Step-by-step explanation: There are 12 fruits and 5 are oranges.
If you draw an orange, then there are 11 fruits and 4 oranges. (5/12)x(4/11)=20/132 or 5/33 in simplest form.
2.Is annual income a qualitative or quantitative variable?
3.Is ownership of an American Express card a qualitative or quantitative variable?
4.Does this study involve cross-sectional or time series data?
5. Determine whether the following two statistical inferences may be made based on the sample data collected.
An estimated 59% of the population of subscribers has an annual income of $75,000 or more.
An estimated 60% of the population of subscribers has an American Express credit card.
Answer:
Bloomberg Business week NorthAmerica Subscribers
; Quantitative ; Qualitative ; No ; Yes ; No
Step-by-step explanation:
Sample size = 2861
Percentage respondent with annual income ≥ 75000 = 59%
Percentage having an American Express credit card
1.What is the population of interest in this study?
Bloomberg business week NorthAmerica Subscribers
2. Quantitative
Annual income is quantitative because it is numeric, that is repress red by numbers which can be used to perform sensible numerical computation such as additions, mean, multiplication and so on.
3.Qualitative
No ; ownership of an American express card is a Qualitative variable as it will take responses as (yes or no), even when represented or coded as numbers, it will make no numerical sense to peform mathematical calculations with it.
4.
No ; time series data has to do with data collected with respect to a particular month, year or seasonal data.
5. Determine whether the following two statistical inferences may be made based on the sample data collected.
An estimated 59% of the population of subscribers has an annual income of $75,000 or more.
Yes ;
An estimated 60% of the population of subscribers has an American Express credit card.
No ; the research says 50% and not 60%
Answer:
Step-by-step explanation:
Why are you asking? Why isn't your friend?
The diagram assumes that the angle on the lower left of the triangle is a right angle. If it is not, then I don't think there is a way that this can be solved.
Tan(A) = opposite / adjacent
opposite = 7
Adjacent = 4
Tan(A) = 7/4 = 1.75
A = inverseTan (1.75)
A = 60.60 degrees