Answer:
5 BTUs/ft^3
Step-by-step explanation:
800 BTUs * 30 students = 24000 total BTUs combined
Volume of room = 20 feet * 20 feet * 12 feet = 4800 cubic feet
BTUs/ft^3 = 24000 BTUs / 4800 cubic feet = 5 BTUs/ft^3
So the amount of BTUs per cubic foot that were produced was 5 BTUs/ft^3
Given equation is y=2x+7 and 
Let's simplify the 2nd equation before we can start graph so that calculation will be easy
multiply both sides by 2 to cancel out fractions
y=2x+7
which is exactly same as the first equatoin so graph of both will be exactly same and solution will be infinitely many solutions.
y=2x+7 has y-intercept 7 so first point will be (0,7). Slope is 2 so rise 2 unit up then 1 right and graph the new point.
The correct question is
<span>A rectangular prism has a length of 3 1/2 inches, a width of 5 inches, and a height of 1 1/2 inches. What is the volume of the prism? Enter your answer in the box as a simplified mixed number or a decimal.</span>
we know that
length=3 1/2 in--------> (3*2+1)/2=7/2 in
width= 5 in
height=1 1/2 in--------> (1*2+1)/2=3/2 in
[volume of the prism]=[length]*[width]*[<span>height]
</span>[volume of the prism]=[7/2]*[5]*[3/2]=105/4 in³-------> 26.25=26 1/4 in³
the answer is 26 1/4 in³
For 10 here is the answer and for 9 i’ll reply to my comment
Hiroshi did 30 minutes history, 60 minutes English, and x minutes of math.
If we add all of these values together we would have he total amount of homework he did is 30 + 60 + x minutes.
One fourth of his total time is spent on math so...let's just take 1/4 of that total amount!
a. 1/4(x + 30 + 60) = x
