Yes. Parenthesis first, then if any exponents, then multiplication or division, then addition and subtraction. PEMDAS.
First, 5/3 = 1.6
21 x 1.6 = 34.99999999
But, when I put it in a calculator, the 1.6 was repeated so:
Round 34.99999999 to 35
35 books
Yes because if you graph it, it passes the vertical line test
Answer:

Step-by-step explanation:
We must convert the given temperatures from degrees Celsius to degrees Fahrenheit
The formula is:

Where C is the temperature in degrees Celsius and F is the temperature in degrees Fahrenheit
Then we must replace the temperature in degrees Celsius and solve the equation for F






The Fahrenheit temperature range in which the antifreeze protects the car is:

ANSWER
The pendulum's maximum displacement is 2cm.
EXPLANATION
The maximum value of the graph is the pendulum's maximum displacement.
The graph is a periodic function
The amplitude of the graph is 2.
The range of the graph is -2≤y≤2
The maximum value is 2.
The pendulum's maximum displacement is 2cm
The correct choice is B.