Andrea's sleeping bag is designed for camping in temperatures of -3°C or warmer. For what Fahrenheit temperatures is her sleeping bag designed? Round to the nearest tenth of a degree.
Question 35 options:
A)
-33.7° F or warmer
B)
-19.4° F or warmer
C)
26.6° F or warmer
D)
52.2° F or warmer
To convert from Celsius to Fahrenheit, we can use the formula:
°F = (°C × 9/5) + 32
Considering the given temperature range of -3°C or warmer, we can calculate the equivalent Fahrenheit temperatures.
For -3°C:
°F = (-3 × 9/5) + 32 ≈ 26.6°F
Therefore, Andrea's sleeping bag is designed for temperatures of 26.6°F or warmer.
The correct answer is C) 26.6°F or warmer.
Solve the problem.
Cindy wants to secure sequins on a piece of felt shaped like a trapezoid with a height of 11 cm and bases of 19 cm and 13 cm. What is the cost of all the sequins if sequins cost $0.70 per cm^2 of coverage?
Question 36 options:
A)
$37.80
B)
$136.50
C)
$30.10
D)
$123.20
To find the area of the trapezoid, we can use the formula:
Area = (base1 + base2) * height / 2
For the given trapezoid with a height of 11 cm and bases of 19 cm and 13 cm, the area can be calculated as:
Area = (19 + 13) * 11 / 2 = 32 * 11 / 2 = 176 / 2 = 88 cm^2
Since sequins cost $0.70 per cm^2 of coverage, the cost of all the sequins can be found by multiplying the area by the cost per cm^2:
Cost = 88 cm^2 * $0.70/cm^2 = $61.60
Therefore, the cost of all the sequins is $61.60.
The correct answer is not provided in the options given.
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 convert Celsius to Fahrenheit, you can use the formula:
°F = (°C × 9/5) + 32.
Let's convert -3°C to Fahrenheit:
°F = (-3 × 9/5) + 32
°F = (-27/5) + 32
°F = -5.4 + 32
°F ≈ 26.6.
Therefore, Andrea's sleeping bag is designed for temperatures of 26.6°F or warmer.
The correct answer is option C) 26.6°F or warmer.
To convert Celsius to Fahrenheit, you can use the formula:
°F = (°C × 9/5) + 32.
In this case, Andrea's sleeping bag is designed for temperatures of -3°C or warmer. To find the Fahrenheit temperature, you can substitute -3 into the formula:
°F = (-3 × 9/5) + 32.
Simplifying this equation gives:
°F = (-5.4) + 32.
Adding -5.4 and 32 gives:
°F = 26.6.
Therefore, Andrea's sleeping bag is designed for temperatures of 26.6°F or warmer. Rounded to the nearest tenth, the answer is option C) 26.6°F or warmer.