Answer:
180.5 ft
Step-by-step explanation:
the area for the sand box would be calculated as length × width. since the sandbox is square each side is the same length. the side will be half the number of the area.
361 ÷ 2 = 180.5 ft
statements 1, 3, 4 are correct
Answer:
105 degrees
Step-by-step explanation:
since alternate interior angles are equal they have to be the same, so you just divide by two to get 105.
Answer: The standard deviation was calculated incorrectly.
Step-by-step explanation:
- The standard deviation measures the dispersion of the data values from the mean value.
It cannot be negative , because it is the square root of the variance .
We add all squared deviations from the data points away from the mean and (then divide it by the number of data values) to evaluate variance.
Since , any squared number cannot give a negative result.
⇒ Standard deviation cannot be negative.
⇒The standard deviation was calculated incorrectly.
Rest other things (given in options) can not be interpreted on the basis of given information.
Answer:
f(x)=cos(x)
The amplitude is equal to 1. The period is 2π.
