The coach's errors are;
<h3>What is speed?</h3>
Speed is defined as the ratio of the time distance travelled by the body to the time taken by the body to cover the distance.
Given the speed that Aliza needs to run in order to exceed her fastest time in a race = 8.8 feet per second
If her coach determines that she is running at an average rate of 5.8 miles per hour, we need to first convert the speed her coach assumed to feet per second
Convert 5.8miles to feet per second
According to the coach's conversion
This shows that 5.8mi/hr is equivalent to 34.0ft/s according to the coach conversion rate.
From the coach's calculation, we see that the coach made the first error by using 60s as 1hr instead of 3600s as 1hr
The coach also made an error by saying Eliza is not running fast enough to exceed her fastest time. We can see that Eliza was running fast enough since her speed at 34ft/s exceed 8.8ft/s.
Hence the second error was a wrong conclusion made by the coach.
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The volume of the pyramid is 167.6 cube inch (approx).
Step-by-step explanation:
Given,
Each length (l) of the base of the pyramid = 8.3 in
Height(h) of the pyramid = 7.3 in
To find the volume of the pyramid.
Formula
Volume of the pyramid = ×area of the base×height
Area of the base = l²
Now,
The volume of the pyramid = ×l²×h
= ×8.3²×7.3 cube inch = 167.6 cube inch (approx)
Answer:
3yrs
Step-by-step explanation:
Given parameters:
Capital = $700
Percentage interest = 4% per annum
Unknown:
Time it will take for amount to be = $784
Solution:
To find the simple interest on an amount;
I =
P is the principal
R is the rate
T is the time
I is the interest
Insert the parameters:
I =
I = 28T
So;
At the end of the duration:
Principal + Interest = Amount
700+28T = 784
28T = 784 - 700
28T = 84
T = 3yrs
The second option is the correct answer
The expression given to us is:
Herein, we can simplify it by opening up the bracket and multiplying each term inside the bracket by the term which is outside the bracket.
Thus, we get:
Rearranging the above expression in descending order of power we get:
From the given options we can see this is the second option. Hence the second option is the correct answer.
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