Answer:
Step-by-step explanation:
The expression -9 + x*2 - 3x*2 + 4x has the following terms:
-9, x^2, -3x^2 and 4x. Please note: x^2 is correct if you meant "the square of x."
a) there is only one constant term; it is -9.
b) there are two terms involving x^2: x^2 and -3x^2. Combining them results in -2x^2.
c) there is only one term involving x: It is 4x.
d) -9 + x*2 - 3x*2 + 4x becomes -2x^2 + 4x - 9. Again, please use " ^ " to indicate exponentiation.
Answer:
Step-by-step explanation:
Given
Circle has radius
Area of the sector is given by
if is one-sixth of area of circle then
If is one-fourth of area of circle then
Violations increased by 16 - 12 = 4
4 is what percent of 12?
4/12 = 1 / 3 = 0.3333 per hundred = 33.33%
The answer is C. 33%
Answer:
x=6
Step-by-step explanation:
42 is the total, so 42/7 is 6.
Answer:
c. the biology test
Step-by-step explanation:
To answer this problem we need to calculate the z-score of both tests, using the formula:
z = (x - μ) / σ
Where x is Sue's score, μ is the mean, and σ is the standard deviation.
- For the <u>biology test</u>, the z-score is:
z = (76 - 70) / 7 = 6/7 = 0.857
- For the <u>math test</u>, the z-score is:
z = (76 - 75) / 10 = 1/10 = 0.100
Because the z-score for the biology test is greater than the z-score for the math test, Sue did better in the biology test, in comparison to the rest of the class.