whos good at math?

Ok I am in Core Plus 4 Honors. I need some help. I totally fotgot how to do any of this stuff. thanks for helping.


1. The Slope of the linie 2x+5y=20 is?
(a)2
(b)-2
(c) 2/5
(d) 10
(e)-2/5

2. If f(x)=xsquared, then f(a+2)=?
(a) a squared + 4a + a
(b) a squared + 2
(c) a squared + 4
(d) a squared + 2a + 4
(e) a squared + 2

3. If ax+b=cx+d, then x =?
(a) d - b over a - c
(b) db over ac
(c) b - d over ac
(d) b - d over a +c
(e) c + d - b over a

4. Which of the following is not a zero of f(x) = 2x to the fourth - 6x cubed - 2x squared + 6?
(a) 0
(b) 1
(c) 2
(d) -1
(e) 3

5. The distance between the point (2,4) to the point (7,- is
(a) 13
(b) square root of 41
(c) square root of 13
(d) square root of 97
(e) none of these

6. Simplify (x cubed over 3z) to the negitive 3rd power
(a) x to the 6th, z cubed, over -27
(b) -27 z cubed over x to the 9th
(c) z cubed over 27x to the 6th
(d) -9z cubed over x to the ninth
(e) 27z cubed over x to the 9th

7. If x>0, then the square root of 36x squared + 4 x squared is equal to?
(a) 14x
(b) 10x squared
(c) 14x squared
(d) 10x
(e) 48x

Thank you for helping me with this. I forgot how to do all this stuff. so if uknow the answer could u please explain why? thnaks

SimsZilla wrote:

Ok I am in Core Plus 4 Honors. I need some help. I totally fotgot how to do any of this stuff. thanks for helping.


1. The Slope of the linie 2x+5y=20 is?
(a)2
(b)-2
(c) 2/5
(d) 10
(e)-2/5

2. If f(x)=xsquared, then f(a+2)=?
(a) a squared + 4a + a
(b) a squared + 2
(c) a squared + 4
(d) a squared + 2a + 4
(e) a squared + 2

3. If ax+b=cx+d, then x =?
(a) d - b over a - c
(b) db over ac
(c) b - d over ac
(d) b - d over a +c
(e) c + d - b over a

4. Which of the following is not a zero of f(x) = 2x to the fourth - 6x cubed - 2x squared + 6?
(a) 0
(b) 1
(c) 2
(d) -1
(e) 3

5. The distance between the point (2,4) to the point (7,- is
(a) 13
(b) square root of 41
(c) square root of 13
(d) square root of 97
(e) none of these

6. Simplify (x cubed over 3z) to the negitive 3rd power
(a) x to the 6th, z cubed, over -27
(b) -27 z cubed over x to the 9th
(c) z cubed over 27x to the 6th
(d) -9z cubed over x to the ninth
(e) 27z cubed over x to the 9th

7. If x>0, then the square root of 36x squared + 4 x squared is equal to?
(a) 14x
(b) 10x squared
(c) 14x squared
(d) 10x
(e) 48x

Thank you for helping me with this. I forgot how to do all this stuff. so if uknow the answer could u please explain why? thnaks

1. C) shouldnt be that hard to figure out, just plug numbers in
2. C), just replace a+2 in for all the x's in the equation
3. D), just a guess, not sure how to do it, that kinda math I did so long ago
4. Dunno, that was like 2 years ago where we dealed with quartics
5. I dont know what you mean by (7,-.....Regardless what that second point is, just use the distance between 2 points formula
6. E) negative exponents means you flip the equation, making it --The ^'s are the sign for exponents-- (3z/x^3)^3, then distribute the ^3
7. D) easy question, find the square root 38 (= and 4 (=2), the exponents on the x's you can get rid of since theyre in a square root leaving you with 8x + 2x

Your wrong about number 1, it's E. You have to solve for y...

I'm not sure about number 2, it should be a squared + 4a + 4... but that's not an option.

It's A because, ax-cx=d-b.. x(a-c)=d-b.. d-b / a-c

You have to take a two out, and then bring the 6 to the other side. I completely forget how to factor a cubed function... So can't help you on that one..

(x cubed / 3z) - cubed... flip it and distribute a cubed to everything. 27z cubed over x ninth. So that's E.

This is actually a difficult question or an easy question. I'd need to know if that entire binomial is taken to the square root or each term... so can't help you on that one.

Zsirvone28 wrote:

Your wrong about number 1, it's E. You have to solve for y...

same shit different pile

lebronzoom wrote:

Zsirvone28 wrote:

Your wrong about number 1, it's E. You have to solve for y...

same shit different pile

... You just got a sign mixed up. It's cool.

I just realized I made a few more mistakes

said 38 instead of 36
said square root of 36 is 8 instead of 6
forgot to turn it into (a+2)(a+2)

its cool though, Ive got a head cold lol