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tiny-mole [99]
3 years ago
13

Does anyone understand this and how do you do it??

Mathematics
1 answer:
ki77a [65]3 years ago
7 0
Yeah she spend two days studying 1.5 hours so multiply 1.5 times to to get three hours. Then she spent two days studying 2.5 so that would be 5. 8 hours total
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Lynn is 4 years younger than her sister Tobbe. If the sum of their ages is 18, how old are Lynn and Tobbe?
expeople1 [14]
Lynn is 7, Tobbe is 11.. Go get a Slurpee now
5 0
3 years ago
Read 2 more answers
A certain cylindrical tank holds 20,000 gallons of water which can be drained from the bottom of the tank in 20 minutes the volu
zalisa [80]
Given that the volume of water remaining in the tank after t minutes is given by the function

V(t)=20,000\left(1- \frac{t}{20} \right)^2

where V is in gallons, 0 ≤ t ≤ 20 is in minutes, and t = 0 represents the instant the tank starts draining.

The rate at which water is draining four and a half minutes after it begins is given by

\left.
 \frac{dV}{dt} \right|_{t=4 \frac{1}{2} = \frac{9}{2} 
}=\left[40,000\left(1- \frac{t}{20} \right)\left(- \frac{1}{20} 
\right)\right]_{t= \frac{9}{2} } \\  \\ =\left[-2,000\left(1- 
\frac{t}{20} \right)\right]_{t= \frac{9}{2} }=-2,000\left(1- 
\frac{4.5}{20} \right) \\  \\ =-2,000(1-0.225)=-2,000(0.775)=-1,550\, 
gallons\ per\ minute

Therefore, the water is draining at a rate of 1,550 gallons per minute four ans a half minutes after it begins.

Answer option E is the correct answer.
4 0
3 years ago
Which of the following fractions is equivalent to 4/20? 2/6 8/16 1/2 3/6 5/10 7/11
scZoUnD [109]

Answer:

1/2

Step-by-step explanation:

8 0
3 years ago
Can you please help me!!! I need this answered before midnight
Allisa [31]
4x=9y+2
x=(9y+2)/4
11x-8=90+9y+2
11((9y+2)/4)-8=9y+92
(99y+22)/4=9y+100
99y+22=36y+400
63y=378
y=6
x=14
is the question asking for y or x??or is it asking for angle

8 0
3 years ago
How much area does the goat have to move around in the barn round to the nearest hundredth (Use 3.14 for up)
PSYCHO15rus [73]
Hello,
A goat is on 15 for rope in the barn means that the radius is 15 feet.
Area of the circle=
πr^2

A=π×15^2
A=225π
A=706.5 square feet. As a result, 706.5 square feet is your final answer. Hope it help!
5 0
3 years ago
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