Math

1. What is the solution of n^-49=0
A. -7
B. 7
C. += 7*** Sorry I couldn't find this symbol
D. no solution

2. What is the solution of x^2+64=0?
A. -5
B. 8
C. += 8
D. no solution***

3.What is the side length of a square with an area of 144x^2?
A. 12
B. 12x***
C. += 12x
D. no solution

4.What is the value of b in the triangle shown below?
A. -4 in
B. 4 in***
C. += 4 in
D. no solution

5.What is the value of z so that -9 and 9 are both solutions of x^2+z=103?
A. -22
B. 3
C 22***
D. 184

Hi! I am Charlotte Dunois,

1. C

2. D

3. B

4. B

5. C

Enjoy!

  1. 👍 5
  2. 👎 0
  3. 👁 349
  1. 1. 1/n^49 = 0 when n --> oo infinity

    2. x^2 = -64
    x = 8 i or -8 i
    if you have not covered imaginary and complex numbers there is no solution.

    3. 12 x because -12x is not a side of a square.

    4. no idea, do not have picture

    5. if x = -9 or +9
    81 + z = 103
    z = 22 agree

    1. 👍 0
    2. 👎 0
    posted by Damon
  2. The first one is clearly meant to be n^2 - 49 = 0
    so C is correct

    1. 👍 0
    2. 👎 0
    posted by oobleck
  3. Mrs. Beandip approves

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    2. 👎 0

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