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What is twice X in Pre-Algebra?
Wiki User
September 12, 2008 10:31PM
a+7<13; (3,4,5,6,7)
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What is the difference between twice the sum of x and y and the sum of twice x and y?
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What does twice mean in math?
Generally, "twice" means double. So, twice X is equal to X plus
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simmisinghsaini's answer- But however, doesn't it mean to divide
when we have to translate algebraic expressions?
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-14 is twice the number how to work out?
Let x be the number you are looking for. Since -14 is twice x we
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Can some one translate the sum of a number and twice the its reciprocal is 3?
A number . . . ' x '
Its reciprocal . . . 1/x
Twice its reciprocal . . . 2/x
The sum of (the number) and (twice its reciprocal) . . . x +
2/x
The equation:
x + 2/x = 3
Multiply each side of the equation by 'x' :
x2 + 2 = 3x
Subtract 3x from each side:
x2 - 3x + 2 = 0
Factor the left side, in order to see what's going on:
(x - 1) (x - 2) = 0
This is true if 'x' is either ' 1 ' or ' 2 '.
x = 1
The sum of the number and twice its reciprocal . . . 1 + 2/1 =
3
X = 2
The sum of the number and twice its reciprocal . . . 2 + 2/2 =
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What does meaning of twice as many sisters as brothers?
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Twice the sum of a number and two?
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Twice the sum of four and x is three less than x?
Thus: 2*(4+x) = x-3, or x = -11.
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What is the expression for twice the difference of x and 5 in math?
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The sum of 3 consecutive integers is twice the first integer?
x+ x+1+x+2=2x
So 3x+3=2x
and x=-3
Check:
-3,-2,-1 are the integers.
There sum is -6 which is twice -3