Answer:
96 square inches.
Step-by-step explanation:
The formula to finding volume of cube/rectangular shaped objects is:
length x width x height
length = 8
height = 4
width = 3
8 x 4 x 3 = 96
96 square inches
Answer:
99% (two-sided) confidence interval for the true average echo duration µ is
(0.73<µ<0.89)
Step-by-step explanation:
Confidence Interval can be calculated using M±ME where
- M is average radar echo duration (0.81 sec)
- ME is the margin of error from the mean
And margin of error (ME) around the mean can be calculated using the formula
ME= where
- z is the corresponding statistic in 99% confidence level(2.58)
- s is the standard deviation of the sample(0.34)
- N is the sample size(110)
Then ME= ≈0,084
99% Confidence interval would be 0.81±0,08 or (0.73, 0.89)
It is 45(67)+98=980
Is that what you do
Answer:
Hello! Your answer is BELOW
Step-by-step explanation:
Number 1: D)
Number 2: A)
Hope I helped! Hope you make an 100%
-Amelia♥
Answer:
23 years old
Step-by-step explanation:
Savannah's age = x
Selena's age = y
Right now, x = 2y + 1
In 13 years, x = 1.5y
Here, we must use simultaneous equations to work it out.
x = 2y + 1
x + 13 = 1.5 x (y + 13) --> x + 13 = 1.5y + 1.5 x 13 --> x + 13 = 1.5y + 19.5
x + 13 = 1.5y + 19.5
- 13
x = 1.5y + 6.5
x = 1.5y + 6.5 = 2y + 1
1.5y + 6.5 = 2y + 1
- 1
1.5y + 5.5 = 2y
- 1.5y
5.5 = 0.5y
x 2
11 = y
We know that y = 11
Savannah is currently twice her cat's age plus 1, so...
11 x 2 + 1 = 22 + 1 = 23 years old
Hope this helps!
P.S. If the cat lives 13 more years after this, it will be a very old cat lol :)