Answer:
7 - 2i
Step-by-step explanation:
Here we have two complex numbers and wish to combine them. Complex numbers have real and imaginary parts. We sum up the real parts and the imaginary parts separately:
-9 - 7i
+16 + 5i
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7 - 2i This is the sum of -9 -7i and 16 + 5i.
To get a decimal form of a fraction, divide the numerator by the denominator.
7/8 = 0.875
Answer:
TELL ME WHY I AM FOCUSED ON THE OTHER PICS MORE THAN THE PROBLEMS
First, find the area of the plot.
Area = length x width
Area = 12 x 5
Area = 60 square feet.
The ratio of the scale to the plot is 1 inch : 2 feet
Square each of those:
1 square inch : 4 square feet
The plot is 60 square feet. 60 sq ft / 4 sq ft = 15
The area of the plot in the scale drawing is 15 square inches.
Answer:
One can be 95% confident that the drive-through service times of fast-food chain is between 169 seconds and 172 seconds.
Step-by-step explanation:
The confidence interval gives a range of value for the population mean or parameter, which is calculated from the statistic value of the data (that is sample statistic). This range gives the interval which is associated with a certain level of confidence for which the interval will contain the true value of the unknown parameter (true value). In the scenario above, the associated confidence level is 95%.Hence, we can be 95% confident that the true value will be continued with the interval (169 ; 172)
