Answer:
2 3/4
Step-by-step explanation:
Answer:
65.45
Step-by-step explanation:
Zscore = (x - mean) / standard deviation
x = score
Percentage below C :
D = 18% ; F = 12%
Sum = 30%
Obtain the Zscore for the proportion below D
P(Z < 0.30) = -0.524
Hence, Zscore = -0.524
Put Zscore = -0.524 in the equation :
-0.524 = (x - 72) / 12.5
-0.524 * 12.5 = x - 72
-6.55 = x - 72
-6.55 + 72 = x
x = 65.45
To receive a grade of C or better, score must be atleast 65.45
Answer:
x=-2
Step-by-step explanation:
5x -10x- 30= 10x
-5x -30 = 10x
-30=15x
x=-2
Answer:
B.) There were 15 more questions on the test than the last test.
Step-by-step explanation:
Answer:
This does not make sense.
Step-by-step explanation:
Just because you are a musician does not mean you play the guitar.
You can play the piano and a trumpet, but not be able to play a guitar!
