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storchak [24]
2 years ago
12

How do you write 40% as a fraction, mixed number, or whole number?

Mathematics
1 answer:
igomit [66]2 years ago
6 0

Answer:

2/5

Step-by-step explanation:

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If the ratio of radius of two spheres is 4:7, the ratio of their volume is?​
Kazeer [188]

Answer:

64 : 343

Step-by-step explanation:

First use the radii to find the volume

1) Radius of first sphere is 4 (taken from 4:7 ratio)

   Insert it into the equation for volume of a sphere: V=4 /3πr^3

   V = (4/3)(π)(4^3)

   V = (4/3)(π)(64)

   V = 256/3 π

   Volume of the first sphere = 256/3 π

2) Radius of the second sphere is 7 (also taken from 4:7 ratio)

   Insert it into the equation for volume of a sphere: V=4 /3πr^3

   V = (4/3)(π)(7^3)

   V = (4/3)(π)(343)

   V = 1372/3 π

   Volume of the second sphere = 1372/3 π

Next, calculate the ratio by dividing the two numbers

256/3 π ÷ 1372/3 π

Answer should be 64 : 343

The simple way to do this problem is to just cube the numbers:  

4:7 becomes 4^3 : 7^3 = 64 : 343

Either way works.

6 0
4 years ago
Find two numbers with a sum of –30 and a difference of 8.
frosja888 [35]
It's the last 2 -19 and -11

3 0
4 years ago
Read 2 more answers
An oil spill spreads 25 square meters every 1/6 hour how much area does the oil spill cover after 2 hours
mrs_skeptik [129]
I believe that you do 25 times 1/6 and then when you get the answer you multiply the answer by 2
3 0
4 years ago
Read 2 more answers
I need help please with this problem
vredina [299]
30:60:90 is 3:6:9 in ratio form
5 0
4 years ago
Long’s Coffee Shop sells a refill mug for $8.95. Each refill costs $1.50. Last month,
dem82 [27]

Answer: 12 refills

Step-by-step explanation:

y = 8.95 + 1.50x

26.95= 8.95 + 1.50x

26.95 - 8.95 = 1.50x

18 = 1.50X

18 / 1.50 = x

X = 12

8 0
3 years ago
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