Answer:
(A)the temperature of 76.1 degrees Fahrenheit converted to degrees Celsius
Step-by-step explanation:
Kareem plans to use the function to convert temperature from degrees Fahrenheit to degrees Celsius.
The function gives a result in degrees Celsius. Therefore, 76.1 is in degree Fahrenheit and the result C(76.1) will be in degree Celsius.
Therefore, C(76.1) represents the temperature of 76.1 degrees Fahrenheit converted to degrees Celsius.
The correct option is A.
None of the answers are correct. The square root of 175 should lie between 13, who's square is 169, and 14, who's square is 196.
Andrew will run 32 miles.
Explanation:
If you divide the time Andrew ran by the miles he ran, you’ll get 7.5 minutes per mile. Then, if you divide 240 minutes by 7.5, you get 32 miles.
Answer:
tan(x) = -1 ±√5
Step-by-step explanation:
This is a quadratic equation in tan(x). Let z = tan(x). Then the equation is ...
z² = 4 - 2z
z² +2z = 4 . . . . . . . add 2z
z² + 2z + 1 = 5 . . . . add 1 to complete the square
(z +1)² = 5 . . . . . . . . write as a square
z +1 = ±√5 . . . . . . . square root
z = -1 ±√5 = tan(x) . . . . . subtract 1; use definition of z
X = number of lessons, y = total cost
y = 15x + 20 <== ur equation
when total bill was 125...y = 125
125 = 15x + 20
125 - 20 = 15x
105 = 15x
105/15 = x
7 = x <=== if Bill took 7 lessons, it would cost 125 <==