Complete question:
<em>The leatherback sea turtle is the fastest known reptile, with a maximum speed of 21.92 miles per hour (mph).
</em>
<em>Which of the following equations, where d is distance in miles and t is time in hours, represents a speed that is less than that of the leatherback sea turtle?
</em>
<em>
</em>
<em>Select all that apply.
</em>
<em>a.</em><em> d = 2.192t
</em>
<em>b.</em><em> d = 20t
</em>
<em>c.</em><em> d = 22t
</em>
<em>d.</em><em> d = 30t</em>
<em />
Answer:
<em>a (2.192t) and b (20t)</em>
<em />
Step-by-step explanation:
Since units for distance and time are all measured in miles and hours respectively, we can simply compare the values of the options given with the leatherback turtle speed and express if the value is lower or not. We must pay special attention to the decimal separator in some cases.
<em />
<em>Leatherback sea turtle: </em><em>d = 21.92t</em>
<em>a.</em><em> d = 2.192t </em><em>is less </em><em>than 21.92t</em>
<em>b.</em><em> d = 20t </em><em>is less </em><em>than 21.92t</em>
<em>c.</em><em> d = 22t </em><em>is more </em><em>than 21.92t </em>
<em>d.</em><em> d = 30t </em><em>is more </em><em>than 21.92t</em>
Answer:
315 people
Step-by-step explanation:
Using the given ratio, we can figure out the number of children on the train by doing cross multiplication.
Let x = # of children on train.
7/2 = 245/x
7x = 490
x = 70 children
The total number of people = 70 + 245 = 315 people total
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Answer:
28
Step-by-step explanation:
let x be the number,
(3/4)x+5=26
(3/4)x=21
x=21*(4/3)
x=28
Answer:
About 46 dollars an hour
Step-by-step explanation:
322/7 = 46
Answer:
(A) The rate of change in the price of a bushel of corn in the current year is $7.
(B) The price of a bushel of corn in the current year is $2 more than the price of a bushel of corn in the previous year.
Step-by-step explanation:
The graph for the prices of different numbers of bushels of corn at a store in the current year is shown below.
Part A:
The rate of change in the price of a bushel of corn in the current year based upon the number of bushels is known as the slope of the line.
The formula to compute the slope is:
Consider the ordered pairs: (4, 28) and (10, 70)
Compute the slope of the line as follows:
Thus, the rate of change in the price of a bushel of corn in the current year is $7.
Part B:
The data for the price of bushels in the previous year is as follows:
Number of Bushels Price
2 10
4 20
6 30
8 40
Compute the rate of change in the price of a bushel of corn in the previous year based upon the number of bushels as follows:
Consider the ordered pairs: (2, 10) and (6, 30)
The rate of change in the price of a bushel of corn in the previous year is $5.
Thus, the price of a bushel of corn in the current year is $2 more than the price of a bushel of corn in the previous year.
