HS Math Flashcards
6 cards from real MAP practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 6 HS Math flashcards as text
What is the domain of the function f(x) = 1 divided by (x - 4)?
Answer: All real numbers except x = 4
The function is undefined when the denominator equals zero: x - 4 = 0, so x = 4. The domain is all real numbers except x = 4.
Which of the following is equivalent to log base 2 of 32?
Answer: 5
log base 2 of 32 asks: 2 to what power equals 32? Since 2^5 = 32, the answer is 5.
A data set has a mean of 50 and a standard deviation of 5. Assuming a normal distribution, approximately what percentage of data falls between 45 and 55?
Answer: 68%
By the Empirical Rule, approximately 68% of data falls within one standard deviation of the mean in a normal distribution.
If sin of angle theta equals 3/5 and theta is in the first quadrant, what is cos of theta?
Answer: 4/5
Using the Pythagorean identity: cos^2(theta) = 1 - sin^2(theta) = 1 - 9/25 = 16/25. cos(theta) = 4/5 (positive in Quadrant 1).
What is the sum of the arithmetic sequence 3, 7, 11, 15, ... up to 10 terms?
Answer: 210
First term a1=3, common difference d=4, n=10. The 10th term is 3+(9)(4)=39. Sum = 10/2 times (3+39) = 5 times 42 = 210.
Which of the following is the correct factored form of 6x squared + 7x - 3?
Answer: (2x + 3)(3x - 1)
(2x+3)(3x-1) = 6x^2 - 2x + 9x - 3 = 6x^2 + 7x - 3.