Answer:
area=38.465, circumference=21.98
Step-by-step explanation:
Divide the diameter by 2 to find the radius
7/2=3.5
Use the formula πr^2 find area
3.5*3.5=12.25
12.25*3.14=38.465
a=38.465
Then, use the formula 2πr to find circumference
2*3.14=6.28
6.28*3.5=21.98
c=21.98
Answer:m= -2/5
Step-by-step explanation:
Under 45 mins is roughly 16%. This is because 68% of the curve exists within 1 SD of the mean. So 16% must be outside and smaller and 16% outside and larger (on average).
It is impossible to determine how likely you are to find someone with exactly the second amount. However, if you are looking for that or less, you would get 84%
Answer:
D) 16 square units
Step-by-step explanation:
The base can be considered to be the line x=-3. The extent of the triangle along that line is from y=-4 to y=4, so is 8 units.
The "height" of the triangle can be considered to be the distance from the vertex at x=-7 to the line at x=-3, so is 4 units.
The area of the triangle is half the product of these measures:
A = (1/2)bh = (1/2)(8 units)(4 units) = 16 square units