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The reciprocal of a number plus the reciprocal of twice the number equals one half?
Let the number be x.Reciprocal of x = 1/xReciprocal of x + Reciprocal of 2x = 1/x + 1/(2x) = (3/2)x = 1.5xIf the value of x = 1/3 then answer is one half.If the value of x = 2 then answer is 3.So, the statement is true only for x = 1/3.___________1/x + 1/2x = 1/2Multiplying both sides of the equation by 2x gives:2x/x + 2x/2x = 2x/2This simplifies to:2 + 1 = xx = 3 (i.e. the reciprocal is 1/3)
How do you represent an odd integer with a variable?
(2x-1) or (2x+1) must both be odd numbers.
How do you factor out 2x2 -2x?
2x2- 2x = 2x*(x - 1)
What is the opposite word for the prime number?
A composite number is a number that has more divisors than 1 and itself.
Is 237 prime?
A prime number is a number that is divisible only by 1 and itself; it has no other factors. A composite number is a number that is divisible by more than two numbers - more than 1 and itself. The factors of 237 are 1, 3, 79, and 237. Therefore, it is a composite number.
What is 1 more than two times a number?
2x + 1
1 more than 8 times a whole number is 25 more than 2 times that number?
Let the unknown number be x: 8x+1 = 2x+25 8x-2x = 25-1 6x = 24 x = 4
What is five more than twice a number is 7?
If you want "the number" write 5 + 2X = 7 2X = 2 X = 1. So "five more than twice of one is 7.
What is nine more than four times a number is the same as one less than twice the number?
9+4x=2x-1 2x=-10 x=-5
Twelve more than half a number is at most 8?
12 more than a 1/2 a number (x) is at most (< or = to) 8. Simplify 12+1/2x is < or = to 8
Half of a number is ten more than triple the number What is the number?
Use the equasion: 1/2x = 3x + 10 to get the answer of negative 4.
How do you write 11 more than twice a number is -1 as an equation?
It is: 2x+11 = -1 and the vaue of x works out as -6
What is an unknown number increased by twice the same unknown number is more than the unknown number less one?
Let's call the unknown number x. We want for what number(s) is x + 2x > x -1 true. x + 2x > x -1 Combine like terms: 3x > x - 1 Subtract x from each side: 2x > -1 Divide each side by 2: x > -1/2 Any number greater than -1/2 will work.
How would you write one half of a number is fourteen more than two times the number?
(1/2)x =+14 + 2x or x/2 = 2x +14 or 1/2(x) = 2x + 14 --> x = 4x + 28 ----> 3x=-28 so x = -28/3
Which equation means that 7 less than twice a number is -1?
2x - 7 = -1
What is the alegbraic expression of 1 less than twice the square of a number?
2x^2 - 1
What is the fourth multiple of a 1 digit number is 18 more than its second multiple what is the 1st multiple?
It appears to be 9
