Square root of 69= 8.306624
check the answer
8.3^2= 8.3*8.3= 68.89
now round 68.89 = 69
I hope that's help!
Answer:
The weight of the enlarged paperweight is
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its volumes (or its weights) is equal to the scale factor elevated to the cube
Let
z-----> the scale factor
x ----> the enlarged paperweight weight
y ----> the original paperweight weight
we have
substitute and solve for x
Answer:
b is the answer
Step-by-step explanation:
Answer:
the answer is 15 subtract the highest number from the lowest
Answer:
interval=(15.085,14.9515)
Step-by-step explanation:
Table:
CI Z
85% 1.440
90% 1.645
95% 1.960
In order to find the interval/estimate of hours per week students study we consider the formula given below:
Interval=X±
where:
X is the mean hours
Z is the value from Z distribution table of Confidence Interval
n is the sample size of students
S is the standard deviation
X=15, Z=1.645, S=2.3hours, n=78
Interval=15±
Interval=15±0.0485
interval=(15.085,14.9515)