Answer:
A = 346.185 cm²
Step-by-step explanation:
The formula given is:
A = πr²
A = Area of the object (circle).
π = 3.14
r = radius, which is 1/2 of the diameter, a straight line from one end to the other.
Set the equation, plug in the corresponding numbers to the corresponding variables:
A = (3.14)(10.5)²
Simplify. Remember to follow PEMDAS.
PEMDAS =
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
and is the order of operation.
First, solve the exponent.
(10.5)² = 10.5 * 10.5 = 110.25
Next, multiply:
A = (3.14)(110.25)
A = 346.185 cm²
A = 346.185 cm² is your answer.
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Answer:
35 minutes
Step-by-step explanation:
Beth left for the airport 105 before her flight was scheduled to leave, and she arrived at the airport 70 minutes before her flight was scheduled to leave.
The difference between when she left and when she arrived will be how long her drive was.
Subtract how many minutes early she was before when she arrived, from how many minutes early she was when she left.
left-arrived
She left with 105 minutes to spare, and 70 minutes left when she arrived.
105-70
35
The drive to the airport took 35 minutes
Answer:
144 days
Step-by-step explanation:
160 · 0.9
Answer:
y = -4x + 36
Step-by-step explanation:
First, find the slope by calculation (y2-y1)/(x2-x1), you should get -8/2, or -4.
Next, plug the points into the equation y-y1 = slope(x-x1), getting y-28 = -4(x-2).
Simplify the equation and you get y =-4x + 36.
Hopefully this helps- let me know if you have any questions!
In simple regression analysis, the standard error is never greater than the standard deviation of y values.
