Answer:

Step-by-step explanation:
Temperature in the room 
Decrease in the temperature(outdoors)
in
.
Rate of decrease

(a) After

But it is not possible as outdoor temperature is
so after
temperature decrease will not occur.
Hence after
more minutes temperature=
(b) Let after
temperature is 
Here 

Answer:
It doesn't form a right triangle
Step-by-step explanation:
According to the Pythagorean theorem, the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
a^2 + b^2 = c^2 by substituting the three values, 10, 15, and 20 you should get an equivalent value of the hypotenuse.
10^2 + 15^2 = 20^2
100 + 225 = 400
325 =/= 400
This is false.
Since this is not equivalent, it is NOT a right triangle.
Hope this helped :)
Answer:
Second box
Third box
fifth box
Step-by-step explanation:
Elisa made the greater number of withdrawals.
to find out you will divide the total amount that they took out by the amount they withdrew
Elisa: 147/21 = 7
Frances: 188/47 = 4
88 % students of the class hand in their projects on time
<em><u>Solution:</u></em>
Given that, Ms.Khans class, 22 out of 25 students hand in their projects on time
Total number students = 25
Students hand in their projects on time = 22
<em><u>To find: percent of the class hand in their projects on time</u></em>

Substituting the values, we get

Thus 88 % students of the class hand in their projects on time