Answer:
around 254.47
Step-by-step explanation:
pi*r^2 is the equation. the radius is 9 so in the equation the r^2 is equal to 81 since 9*9 =81. 81*pi is equal to 254.47
The answer should be B) if my math is correct
Answer:
They would be 44.6 miles apart
Step-by-step explanation:
Here, we want to calculate how far they will be in 1 hour
Mathematically;
Distance = speed * time
In 1 hour, Kiran would have traveled a distance of 3 * 1 = 3 miles
While Clare would have traveled a distance of 3.4 * 1 = 3.4 miles
Now, we want to calculate how far apart they would be
On the 24 miles trail, Kiran would be at a distance of 21 miles to the other end
On the 24 miles Claire would be at a distance of 20.6 miles
So how far apart they would be is
24 miles + 20.6 miles = 44.6 miles
Answer:
(-5,24)
Step-by-step explanation:
2f+3g-h
first we substitute in the numbers
2(-3)+3(1)-2
-6+3-2
-3-2
-5
Then again
2(5)+3(4)-(-2)
10+12+2
22+2
24
hope this helps!:)
Answer:
correct option is D. 630 kcals
Step-by-step explanation:
given data
Ashley weight = 130 lb
exercise time = 48 minutes
VO2 = 2.72 LO2/min
VCO2 = 2.24 LCO2/min
to find out
total energy expenditure
solution
first we get here respiratory exchange ratio that is
respiratory exchange ratio (RER) = 
...........1
RER = 
RER = 0.823
now we get here calorific value that is
calorific value = 3.815 + 1.23 × RER
calorific value = 3.815 + 1.23 × 0.823
calorific value = 4.827 kcal/L O2
so now we get energy expended that is
energy expended = VO2 × calorific value × time
energy expended = 2.72 × 4.827 × 48
energy expended = 630 kcals
so correct option is D. 630 kcals
