What percent is 42 out of 20

Felicity set the thermostat of her refrigerator to 37°F. The refrigerator temperature t in degrees Fahrenheit h hours after the temperature sensor in the refrigerator is activated satisfies t=1cos (1.05h) + 37.

What is the area of the dining room

2 (b + 3) = b - 4 b=?

Simplify this expressions 2sin30cos30

When the function f (x) = 4 (2) * is changed to f (x) = 4 (2) * -13, what is the effect?

To how many significant figures should each answer be rounded? a) (6.62610^-34 Js) (2.997910^8 m/s) / 4.07010^-7 m = 4.880610663391*10^-19 J (unrounded) b) (6.02210^23 atoms/mol) (0.589 g) / 20.18 g/mol = 1.75810^22 atoms (unrounded)

What does it mean when it says to estimate the sum or difference? In a math problem: 6/7+3/8 and 4/5+2 7/8.

60 minutes is 20% of what number

Negative 3/4 plus negative 3/8

Jaimi went to have a manicure that cost $30. She wanted to tip the technician 20% and tax is 5.75%. how much did she spend total for the manicure?