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Find the value of X.2Xa2 2.5 125bCd....

Question

Find the value of X.2Xa2 2.5 125bCd.

Find the value of X. 2X a 2 2.5 125 b C d.



Answers

Solve $5 x+4-2 x=28-3 x$. (a) 8 (b) 4 (c) $-4$ $(d)-12$

Okay, so we're starting cross multiplying. So we get that eight X is equal to five times five, which is 25. So x is equal to 25/8. Okay, so 25/8 is 3.125 So we get that X is equal to 3.1 to 5, and that's equal to be.

We need to solve the following four X. So for letter A we take the square root of both sides. When you take the square root you get both a positive and a negative answer. So we get X equals plus or minus. The square root of 25 is five. Let her be we take the square root of both sides and again we get a plus and minus answer and the square root of 144 is 12. Let her see. We take the square root of both sides and we get less minus 13. Yes, letter D. We take the square root of both sides. So this is really X. Is equal to the square root of one over the square root of four. So when you take the square root you still get plus minus. It would be plus minus one half letter E. We take the square root of both sides, so we get X. Is equal to plus or minus the square root of 12. Square root of 12 can be broken down into the square root of four times the square root of three, so X becomes plus or minus two. The square root of three, 18. We take the square root of both sides, so X is equal to plus or minus the square root of 18, but 18 can be broken down into the square root of nine times square to to, So this becomes x equals plus or -3, the square root of two.

King. So if we're looking for the value of X over five, we have to realize that all we really have to do is first to take the reciprocal of everything, which means just flip both factions. We put that one, we got that. And then if we foot the right side, we got exposed. Twenty is equal to fifteen. So here's what we're dealing with. But we first need to find out some value. So I'm gonna go ahead and cross multiply. You can say fifteen X is equal to five x plus one hundred. Come here. I'm going to subtract five ex from both sides, and that gives us ten X is equal to one hundred. Giving us that X is equal to ten. So then, if we want to know this and we know that it's evil to this again, I'm just gonna take this x five and plug that right in right up here so that we're going to get ten plus twenty divided by fifteen. Well, temples twenty is thirty and thirty five. Divided by fifteen is just too. So we know that C should be our answer

We have a problem here. We have to figure out a B, C or D. What X value is gonna make this true? And I immediately look and I say five is multiplied by something to be 25. And because I know that five times five is 25 I'm basically gonna choose the value that makes everything in this parentheses e equal to five. And I know that eight minus three is equal to five. So I believe X is equal to three, which is the answer choice be.


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