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svlad2 [7]
3 years ago
14

Find the volume of a rectangular pyramid with length 11 m, width 7 m, and height 8 m. Round to the nearest tenth, if necessary.

Mathematics
1 answer:
madam [21]3 years ago
7 0

Answer:

205.3m

v = w \times l \times h \div 3

v = 11 \times 7 \times 8 \div 3 =

v = 77 \times 8 \div 3 =

v = 616 \div 3 =

v = 205.3333333

*Round to nearest tenth and 205.3333333 becomes 205.3

Hope this helps! If you have any more questions or need further explanation please comment down below. Good luck!

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Step-by-step explanation:

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This is worth 20 points if you show work you will get the Brainliest answer if your unable to show work type it for your explana
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Answer:

it let me now!!

Step-by-step explanation:

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3 years ago
How do I find out the measure of the angles?
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6 0
3 years ago
A plane flew 360km in 3 hrs when flying with the wind.With no change in the wind,the return trip took 4 hrs.Find the speed of th
morpeh [17]
Speed of the plane: 250 mph
Speed of the wind: 50 mph
Explanation:
Let p = the speed of the plane
and w = the speed of the wind
It takes the plane 3 hours to go 600 miles when against the headwind and 2 hours to go 600 miles with the headwind. So we set up a system of equations.
600
m
i
3
h
r
=
p
−
w
600
m
i
2
h
r
=
p
+
w
Solving for the left sides we get:
200mph = p - w
300mph = p + w
Now solve for one variable in either equation. I'll solve for x in the first equation:
200mph = p - w
Add w to both sides:
p = 200mph + w
Now we can substitute the x that we found in the first equation into the second equation so we can solve for w:
300mph = (200mph + w) + w
Combine like terms:
300mph = 200mph + 2w
Subtract 200mph on both sides:
100mph = 2w
Divide by 2:
50mph = w
So the speed of the wind is 50mph.
Now plug the value we just found back in to either equation to find the speed of the plane, I'll plug it into the first equation:
200mph = p - 50mph
Add 50mph on both sides:
250mph = p
So the speed of the plane in still air is 250mph.
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3 years ago
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