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Helen [10]
3 years ago
11

Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After 4 hours, he had 350 pages left to re

ad.
Mathematics
1 answer:
denis-greek [22]3 years ago
8 0
Im a little confused, what’s the question??
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A water filter has the shape of an inverted right circular cone with base radius 3 meters and height 9 meters. water is being pu
tekilochka [14]
The volume of a cone is
V = (1/3)πr³
We are given with radius and the height of cone, so we can solve for the radius as function of water level using ratio and proportion
3/9 = r/h
r = h/3
Substituting
V = πh³/81
Taking the derivative
dV/dt = πh²/27 dh/dt
Solving for dh/dt given
dV/dt = 10 m³/s
and
h = 3 m
dh/dt = 9.55 m/s
8 0
3 years ago
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Doug says that this clock shows 8:43.is he correct? Explain why or why not.
ss7ja [257]
Is this a joke because it made me laugh
5 0
3 years ago
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Ui5<br> -4<br> Solve each equation.<br> 1) 2a - 8a = 12 - 8a
vredina [299]

Answer:

Sorry, I forgot what the a means

Step-by-step explanation:

is it multiplcation , division, subtraction, or addition?

3 0
3 years ago
PLEASE help. The problem is to find the indicated sum.​
alukav5142 [94]
The indicated sum is 350. The answer is 350 because the E or sigma is making you do (6j+2) ten times. Every time you do 6j+2 you start with j as 1 and add a 1 to j for every time you add. For example, [6(1)+2]+[6(2)+2]+[6(3)+2]...[6(10)+2].

Hope this helps.
8 0
3 years ago
Find the measure of the smaller angle formed by hands of a clock at the following time.
goldfiish [28.3K]
A clock is a circle which is 360 degrees.

There are 12 hours -----> 360/12 = 30 degrees.

Going clockwise, add 30 degrees for every hour the hour hand is at.

There are 60 minutes -----> 360/60 = 6 degrees.

Add 6 degrees for every minute the minute hand is at.

Find position of both hour hand and minute hand, then take the difference.

Time is 5:15.
Hour hand is at 5 plus 15/60 or 5.25.
Multiply by 30. 30*5.25 = 157.5

Minute hand is at 15.
Multiply by 6. 15*6 = 90

157.5 - 90 = 67.5 degrees.


5 0
3 years ago
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