Answer:
R= -6 cos(0)
Step-by-step explanation:
Edge 2020
to find the equivalence, you would usually multiply the numerator and the denominator by the same number
Examples: 1/2 1×2, 2×2 It becomes 2/4 which is equivalent to 1/2
Answer: d
Step-by-step explanation:
The probability of not being purple is the probability of the three other colors. Suppose the number of purple marbles is x. Then we have 20+30+40+x = 90 + x marbles. Then the probability of not being purple is 90/(90+x). If this fraction can have a lowest term for some value of x, then the numerator of this lowest term must be a factor of 90.
Checking through the options, only option D has a non-factor of 90 as its numerator.
