Looking at your choices, I believe that you meant to write that 2 is to the power of x. This is the typical form.
In this case, the correct answer would be choice C. It is an exponential equation, that is starting at 5 and increasing by a factor of 2.
Answer:
-15
Step-by-step explanation:
30 counting backwards by fives
30, 25, 20, 15, 10, 5, 0, -5, -10, -15, -20, -25, -30
Hope this helps!
Answer:
BC = 88.88
Step-by-step explanation:
Comment.
This looks like an example of the cos law.
Givens
AB = 100 m
<A = 60 degrees
AC = 70 m
Cos(60) = 1/2
BC = ?
Formula
BC^2 = AB^2 + AC^2 - 2*AB*AC * Cos(60)
Solution
BC^2 = 100^2 + 70^2 - 2*100*70 * 1/2 1/2 and 2 cancel out
BC^2 = 10000 + 4900 - 7000
BC^2 = 7900 Take the sqr root of both sides
√BC^2 = √7900
BC = 88.88