Answer:
400 pretzels in 1 hour.
Step-by-step explanation:
60 pretzels in 9 min.
___ pretzels in 60 min.
(60÷9)×(60)=<u>400</u>
Notice that for implies that elsewhere, since
where is a random variable representing cable lengths according to the PDF .
a. By definition of expectation, the mean is
The variance is
where
so that the variance is , making the standard deviation .
b. The proportion of cables within specs is
Solution:
A number is said to be irrational , if the decimal expansion of a number is non terminating non repeating.
For example , 2.01001000100001......., √3,∛5,....
Now coming to Options
(A) 4 + 2.5
4 as well as 2.5 is rational . So sum of two rational is a rational.
(B) 3 ×
Since 3 is rational , but is irrational. So product of rational and irrational should be irrational.
Because = 0.333333.......(non terminating non repeating)
But numerator which is 3 and denominator which is 3 cancels out and result is 1 which is rational number.
(C) 2 × (real number=a )raised to power of 7
=
= has denominator of the form other than , then it is irrational number.
So, is rational or irrational depends on the value of a.
(D) 1.25 + 4.25
Both 1.25 as well as 4.25 are rational. So their sum is rational.
So, option (C) may be irrational , it totally depends on the value of a.
Answer:
The equation at the end should be written like this
18 + 30 = 3(6 + 10)
Step-by-step explanation:
the 3 and 6 should be swapped
Answer:
$81,920
Step-by-step explanation:
money made by january: $40
double that
money made by february: $80
double that
money made by march: $160
double that
money made by april: $320
double that
money made by may: $640
double that
money made by june: $1,280
double that
money made by july: $2,560
double that
money made by august: $5,120
double that
money made by september: $10,240
double that
money made by october: $20,480
double that
money made by november: $40,960
double that
money made by december: $81,920
the total money they made by the end of the year (december) was $81,920