Without doing the math, determine which is greater, 40. 1/4 or 40÷ 1/4. Explain your reasoning.
2 answers:
When you divide by a fraction, in this case 40 divided by 1 over 4, you multiply by the reciprocal of what you're dividing by, so:
÷
turns into...
·
, or 40 * 4, which equals 160.
With this knowledge, whenever given a set of numbers like you were given, we know that 40 ÷ must be the larger, and 40 ·
must be the smaller.
Therefore, 40 ÷ is the greater number.
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Answer: (a) 2 : 3
(b) 4 :1
Step-by-step explanation:
The Volume of a sphere is given as
and the volume of a cylinder is given as
h
The ration of their volume is the same as Volume of Sphere : Volume of Cylinder , which gives
:
h
recall that they have the same radius and the height of the cylinder is 2r , taking this into consideration, we have
:
(2r)
which gives 4 : 6 = 2 :3
(b) The area of a sphere is 4
and the surface area of the circular cylinder is
The ratio then gives
4
:
,which gives
4 : 1
Answer:
The Temperature in the afternoon was .
Step-by-step explanation:
Given:
Temperature in the morning =
Rise in temperature =
We need to find the temperature in the afternoon.
Solution:
Now we know that;
temperature in the afternoon is equal to Temperature in the morning plus Rise in temperature in afternoon.
framing in equation form we get;
temperature in the afternoon =
Hence the Temperature in the afternoon was .