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Pani-rosa [81]
3 years ago
5

HELP PLEASE ALMOST DUE

Mathematics
2 answers:
OLga [1]3 years ago
5 0
Keisha drank the average amount of water 1 of the days.

if he drinks 1 quart, his average is 21/13.

aleksley [76]3 years ago
5 0
His average is his average is 23/13 because he drank every day 1 time
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An empty box is shaped like a rectangular prism. the box has a base area of '9/10' square foot and a height of '1/3' foot. How m
maxonik [38]

Answer:3/10

Step-by-step explanation:

9  divided by 3 is 3 so that it

Next to 3/10 the denominator away stays the same,

3 0
2 years ago
Find the value of y.<br> (6x - 13)<br> (3y + 1)<br> (8x - 61)
Korolek [52]

Answer:

y=1/3

Step-by-step explanation:

3y+1=0

3y=-1

3y/3=-1/3

y=-1/3

6 0
2 years ago
If you place a cup of 210 degree Fahrenheit coffee on a table in a room that is 68 degrees fareinheit, and ten minutes later, it
Lana71 [14]
Newton's Law of Cooling

Tf=Ts+(Ti-Ts)e^(-kt)   where Tf is temp at time t, Ts is temp of surroundings, Ti is temp of object/fluid.  So we need to find k first.

200=68+(210-68)e^(-10k)

132=142e^(-10k)

132/142=e^(-10k)

ln(132/142)=-10k

k=-ln(132/142)/10

k≈0.0073  so 

T(t)=68+142e^(-0.0073t)  so how long until it reaches 180°?

180=68+142e^(-0.0073t)

112=142e^(-0.0073t)

112/142=e^(-0.0073t)

ln(112/142)=-0.0073t

t= -ln(112/142)/(0.0073)

t≈32.51 minutes


8 0
3 years ago
Show steps <br> Simplify <img src="https://tex.z-dn.net/?f=%5Csqrt%7B81%7D" id="TexFormula1" title="\sqrt{81}" alt="\sqrt{81}" a
AysviL [449]
The square root of 81 is 9
4 0
2 years ago
Read 2 more answers
Tyler has a lizard named Larry. Tyler wants to build a rectangular pen for Larry to run
QveST [7]

Answer:

You can go for 1x9, 2x8, 3x7, 4x6, 5x5.

5x5 is the best as it builds a square, which maximizes space.

20*2.50 = $50.

7 0
3 years ago
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