What is the value of -3mn + 4m - 3 when m = 2 and n = -4?
Answers
-3mn + 4m -3 when m =2 and n=-4
-3(2)(-4) + 4(2) -3
-6(-4) + 8 -3
24 + 8 -3
32 - 3
= 29
I hope that's help !
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In a survey at a local university 35%, of students say that they get less than the recommended eight hours of sleep per night. In a group of 2000 students, how many would you expect get eight or more hours of sleep per night?
Divide. (12t^6 - 8t^8) / (2t^3)A. 6t^3 - 8t^8 B. 12t^6 - 4t^5 C. 6t^2 - 8t^4 D. 6t^3 - 4t^5
Answers
Answers
12 mi/1hour
convert
1 hour=60 mins
1 min=60 seconds
1 hour=60 times 60 seconds=360 seconds
12 miles per 360 seconds
convert miles to feet
5280 feet per mile
12 miles times 5280=63360 feet
63360/360
do the math and simplify
63360/360=6336/36=176
176 feet per second
Final answer:
The parachutist's speed of 12 miles per hour can be converted to feet per second by using conversion factors (1 mile equals 5280 feet, and 1 hour equals 3600 seconds).
The resultant speed is approximately 17.6 feet per second.
Explanation:
To convert the parachutist's speed from miles per hour to feet per second, utilize the known conversion factors for miles to feet and hours to seconds. Bread down the problem into two conversions: first, convert miles to feet (1 mile is equivalent to 5280 feet).
Next, convert hours to seconds (1 hour is equivalent to 3600 seconds). The given speed is 12 miles per hour: start the conversion by multiplying it by the number of feet in a mile, then dividing that result by the number of seconds in an hour.
Step 1: Convert miles to feet: 12 miles * 5280 feet/mile = 63360 feet
Step 2: Convert hours to seconds: 1 hour/3600 seconds
From Step 1&2, combine the results to find the speed in feet per second:
63360 feet ÷ 3600 seconds = 17.6 feet per second
So, the parachutist is falling at a speed of 17.6 feet per second.
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Answers
volume=lenght x width x heigth
volume=12 ft * 8.5 ft * 4 ft=408 ft³
density= mass / volume ⇒ mass=volume * density.
density=0.25 pound /ft³
2) we calculate the mass of the right rectangular prism.
mass=volume * density
mass=408 ft³(0.25 pound / ft³)=102 pounds.
answer: c. 102
B. 8
C. 512
D. 56
Answers
The requried simplified value of z is given as z = 8. Option B is correct.
What is simplification?
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Given expression,
8z = 64
divide both sides by 8
8z / 8= 64 /8
z = 8
Thus, the requried simplified value of z is given as z = 8. Option B is correct.
Learn more about simplification here:
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Divide both sides by 8.
8Z/8 = 64/8
Z = 64/8
Z = 8
Your final answer is B. 8.
Answers
Answer:
x = 2 and x = +2
Step-by-step explanation:
It's essential that you use parentheses to clarify what's happening here:
h(x)=x-4/x^2-4 => h(x)=(x-4) / (x^2-4)
We have vertical asymptotes at x values at which the denominator (x^2 - 4) is zero. That would be x = 2 and x = +2.
Answers
Answer: 5.0
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
Therefore 5 is the greatest integer that is less than that.