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How to make a similar shape thats half the volume?
Question posted by PhiBonacci 3+ months ago | 2 answers | 
| Open
Related topics: shape, volume, prism, shapes, geometry
PhiBonacci's answer: The volume v of the rectangular prism is obviously v = 4 * 7 * 7 = 196. You are looking for a prism of similar shape with half the volume: v / 2 = (4 * 7 * 7) / 2 = 196 / 2 = 98. As the condition is "similar shape", the ratio of the ...
A number is 1/7 of another number. The difference of the number is 18. What are the numbers?
Question posted by PhiBonacci 3+ months ago | 4 answers | | Open
Related topics: number, numbers
PhiBonacci's answer: A number y is 1/7 of another number x : 1) y = 1/7 * x. The difference of the numbers is 18 : 2) y = x - 18. And as y=y, 1/7 * x = x - 18 ;; solve for x : x = 7 (x - 18) x = 7x - 126 -6x = -126 x = 21. Insert this in 1) or 2) y = 3. ...
Suppose you want buy a tooth paste and the shop owner says that she can sell the toothpaste only if?
Question posted by PhiBonacci 3+ months ago | 3 answers | | Open
Related topics: shop, toothbrush, under, owner, right, sell, tooth, paste, toothpaste
PhiBonacci's answer: Buy another toothpaste.
Discrete mathematics?
Question posted by PhiBonacci 3+ months ago | 2 answers | | Open
Related topics: mathematics
PhiBonacci's answer: (4πr^2) ÷ ((4 ÷ 3)πr^3) = 3 ÷ r.
What is the ratio of two spheres having the ratio 125:27 for their volume?
Question posted by PhiBonacci 3+ months ago | 2 answers | | Open
PhiBonacci's answer: 125 = 5^3 27 = 3^3 Volumes are in the ratio 125 : 27 Surfaces are in the ratio 25 : 9 Perimeters are in the ratio 5 : 3
Google - How many um^3 are in 2.0 x 10^-3 m^3?
Question posted by PhiBonacci 3+ months ago | 2 answers | | Open
Related topics: google
PhiBonacci's comment: Correction: Sry, it's very early in the morning, I didn't have my 2nd coffee yet ;) 1 mm = 10^3 µm. Thus, (1.0 mm)^3 = (1.0 * 10^3 µm)^3 = 10^9 µm^3. And two of those : 2.0 * 10^-3 m^3 = 2.0 * 10^9 µm^3. So, ...
Google - How many um^3 are in 2.0 x 10^-3 m^3?
Question posted by PhiBonacci 3+ months ago | 2 answers | | Open
Related topics: google
PhiBonacci's answer: "How many um^3 ..." There is no unit "um". If you're talking about micrometers, µm with the Small Greek Letter µ ( /mu/ ) is the right choice. 1 µm = 10^-6 m 1 mm = 10^-3 m x = 2.0 * 10^-3 m3 / (10^-6 ...
Maths - a number is said to be BORING if all digits of the number are the same how many positive?
Question posted by PhiBonacci 3+ months ago | 3 answers | | Open
Related topics: number, prime, positive, boring, math, maths, numbers
PhiBonacci's comment: There are of course the one-digit prime numbers 2, 3, 5, 7 and the two digit prime number 11 itself. But three digit boring numbers are all multiples of 111 which is not prime. 3 * 37 = 111.
Maths - a number is said to be BORING if all digits of the number are the same how many positive?
Question posted by PhiBonacci 3+ months ago | 3 answers | | Open
Related topics: number, prime, positive, boring, math, maths, numbers
PhiBonacci's response: BORING #: if ALL digits of the number are the SAME. All boring numbers b with 0 < b < 10000 are multiples of 1111. And 1111 is not prime. 11 * 101 = 1111. Thus, there are no "positive integers less than 10000 which are the prime and ...
What is the result of 6/2(1+2)?
Question posted by PhiBonacci 3+ months ago | 3 answers | | Open
Related topics: result
PhiBonacci's answer: Simplify the factors: 6/2 = 3 (1 + 2) = 3 Thus: 6/2 (1 + 2) = 3 * 3 = 9
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