Answer: 3/2y - 5
Step-by-step explanation:
5. The 5th figure will have 30 tiles.
6. The 6th figure will have 42 tiles.
7. The pattern is non-linear (quadratic).
8. The 20th figure can be made with 420 tiles.
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The Nth figure is made with n*(n+1) tiles. To answer question 8, you must solve
.. n(n +1) = 420
.. n^2 +n -420 = 0
.. (n +21)(n -20) = 0
.. n = 20 or -21 . . . . the negative solution is extraneous
Answer:
4
Step-by-step explanation:
43/16 times 125 equals 335.9375
The equation cannot be solved, but it can be simplified.
You can't add variables with different exponents. For example, you can't add
with 
because they have different exponents
