In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer written materials in a school of 400 students?
Question 37 options:
A)
About 9 students
B)
About 36 students
C)
About 144 students
D)
About 72 students
To determine the expected number of students who prefer written materials, we need to know the percentage or fraction of students who prefer written materials. Since the given information only provides options for the number of students, we cannot accurately determine the expected number of students who prefer written materials. Therefore, the answer cannot be determined with the given information.
Convert as indicated.
3.3 ft to centimeters
Question 38 options:
A)
99 cm
B)
8.4 cm
C)
83.8 cm
D)
129.9 cm
To convert from feet to centimeters, we need to know the conversion factor. There are 30.48 centimeters in 1 foot.
Therefore, to convert 3.3 feet to centimeters:
3.3 ft * 30.48 cm/ft = 100.584 cm
Rounded to one decimal place, the answer is 100.6 cm.
None of the given options match the correct conversion.
Solve the problem.
Would you be liable to get a traffic ticket traveling at 59 mph in a 70-kph speed zone? If so, by what amount in miles per hour would you have exceeded the limit? Round your result to the nearest mile per hour.
Question 39 options:
A)
Yes. 95 mph
B)
Yes. 16 mph
C)
Yes. 25 mph
D)
No.
To determine if you would be liable to get a traffic ticket, we need to compare the speed limit in kph to your speed in mph.
The speed limit is 70 kph. To convert this to mph, we multiply by a conversion factor of 0.6214:
70 kph * 0.6214 = 43.4956 mph
Since you were traveling at 59 mph, you would have exceeded the limit by:
59 mph - 43.4956 mph = 15.5044 mph
Rounded to the nearest mile per hour, you would have exceeded the limit by approximately 16 mph.
Therefore, the answer is B) Yes. 16 mph
Solve the equation for y.
9x - 9y = 4
To solve the equation for y, we need to isolate the y variable on one side of the equation.
Starting with the equation:
9x - 9y = 4
We can begin by subtracting 9x from both sides of the equation to move the term with y to one side:
-9y = -9x + 4
Next, we will divide both sides of the equation by -9 to solve for y:
y = (-9x + 4) / -9
Simplifying the right side of the equation:
y = (-9x)/-9 + 4/-9
This simplifies to:
y = x - 4/9
So, the solution for y is:
y = x - 4/9