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If x varies jointly as y and the square as z and x equal 40 when y equal 20 and z equal 2 find x when y equal 30 and z equal 3?
135
If x is y and y is z is x the same as z?
Well, 'x' is equal to 'z'. Back in plane geometry, there was a mantra that said: "Two quantities equal to the same quantity are equal to each other." This question is an example of that mantra. So for Example: If x = 10 Then x = y (making y = 10) y = z (making z = 10) therefore z is the same.
Is a rational number divided by an irrational number always irrational?
No. If we let x be irrational, then 0/x = 0 is a counterexample. However, if we consider nonzero rational numbers, then our conjecture is true. We shall prove this by contradiction. Suppose we have nonzero rational numbers x and y, and an irrational number z, such that x/z = y. Since z is not equal to 0, x = yz. Since y is not equal to 0, x/y = z. Since x/y is a quotient of rational numbers, x/y is rational. Therefore, z is rational, contradicting our assumption that z was irrational. QED.
How do you rewrite an absolute value equation as two linear equations?
x=abs(y+z) x=+(y+z)=y+z x=-(y+z)=-y-z
If X Y in Y z which statement must be true?
If x y and y z, which statement is true
If x varies jointly as y and the square as z and x equal 40 when y equal 20 and z equal 2 find x when y equal 30 and z equal 3?
135
If x is y and y is z is x the same as z?
Well, 'x' is equal to 'z'. Back in plane geometry, there was a mantra that said: "Two quantities equal to the same quantity are equal to each other." This question is an example of that mantra. So for Example: If x = 10 Then x = y (making y = 10) y = z (making z = 10) therefore z is the same.
What is a number sentence that shows how two or more expressions are not equal?
If the expressions are w, x, y, z then to show that no two of them are equal is shown by(w-x)*(w-y)*(w-z)*(x-y)*(x-z)*(y-z) ≠0.Note that w .ne. x AND x .ne. y AND y .ne. z is not enough since it is possible for x = z.
If x plus y plus z equal 84 and x plus z equals 72 and x plus y equals 52 solve what is x what is y what is z?
y=84-72=12 z=84-52=32 x=84-12-32=40
What is the min value of 1 by x plus 1 by y plus 1 by z equal30 when x y and z are positive and x plus y plus z equal 30?
(1/x) + (1/y) + (1/z) is a minimum value when x=y=z=10. Symmetry gives either maximum or minimum value.
If x is y and y is z which statement must be be true?
If x = y and y = z then x = z
What are the boolean theorems?
Commutative x + y = y + x x . y = y . x Associative x+(y+z) = (x+y)+z = x+y+z x.(y.z) = (x.y).z = x.y.z Distributive x.(y+z) = x.y + x.z (w+x)(y+z) = wy + xy + wz + xz x + xy = x x + x'y = x + y where, x & y & z are inputs.
Is a rational number divided by an irrational number always irrational?
No. If we let x be irrational, then 0/x = 0 is a counterexample. However, if we consider nonzero rational numbers, then our conjecture is true. We shall prove this by contradiction. Suppose we have nonzero rational numbers x and y, and an irrational number z, such that x/z = y. Since z is not equal to 0, x = yz. Since y is not equal to 0, x/y = z. Since x/y is a quotient of rational numbers, x/y is rational. Therefore, z is rational, contradicting our assumption that z was irrational. QED.
Possible subsets of x y z?
There are 8 different subsets. The null set. {x} {y} {z} {x y} {x z} {y z} {x y z}
The sum of x and its square is equal to y times z?
It can be, it need not be.
What is transitive in math?
A mathematical property, ~, is said to be transitive over a set S if, for any three elements, x y and z x ~ y and y ~ z implies than x ~ z. For example, "is greater than (>)" is transitive, but "is not equal to" is not.
How do you rewrite an absolute value equation as two linear equations?
x=abs(y+z) x=+(y+z)=y+z x=-(y+z)=-y-z
