Answer:
3 5/14 as a mixed number
3.35 as a decimal
Step-by-step explanation:
8 + 32 + 7= 47
denominator is 14
47/14 as a mixed fraction - 3 5/14
3 5/14 as a decimal is 3.35
Answer:
a) z = 1.40
b) X is greater than or equal to 4.9
Step-by-step explanation:
Population mean (μ) = 1.54
Standard deviation (σ) = 2.40
The z-score for any given value X is:
a) For X= 4.9:
The corresponding z-score for x = 4.9 is z=1.40
b) Z-scores higher than 1.40 correspond to values of X higher than 4.9. Therefore, the area under the standard normal probability density function from z to infinity, P(z ≥ 1.40), is interpreted as the probability that X is greater than or equal to 4.9.
Answer: 12 hours and 24 Minutes
Step-by-step explanation:
7*60 = 420
810/420 = 1.9285
93- 100 = 53-60
subtract 40 from 93.
1.53*8 = 12.24
Answer: 12 hours and 24 Minutes
Answer:
x = (-7 ±√89)/4 . . . . . the inverse of selection 3.)
Step-by-step explanation:
You have a quadratic ax²+bx+c=0 with a=2, b=7, c=-5. The solution is given by the quadratic formula as ...
... x = (-b ±√(b² -4ac))/(2a)
Putting your values into the formula gives ...
... x = (-7 ±√(7²-4(2)(-5)))/(2(2))
... x = (-7 ±√89)/4
_____
<em>Comment on answer choices</em>
For whatever reason, the answer choices appear to be "upside down," with numerator and denominator interchanged. The notation a/b means "a divided by b", which is to say that "b" is the denominator.
