Answer: (x-5)
Step-by-step explanation:
Factorizing x^2-2x-15:
=== x^2-5x+3x-15
= x(x-5)+3(x-5)
= (x+3)(x-5)
The factors of x^2 - 2x - 15 are (x+3)(x-5)
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Answer:
The probability of students scored less than 60 = .0768
Step-by-step explanation:
Given -
Mean score
= 70
standard deviation
= 7
Let X be the score of students
the probability that students scored less than 60 =
= 
=
put[ Z=
]
=
using z table
= .0768
I don’t really understand this question
It is 71.4285% (to be exact) increase
Answer:
C
Step-by-step explanation:
40 x 80 = 3200
120 x 100 = 12000
3200 + 12000 = 15200