Answer: 10x - 15y because 5(2x) = 10x and 5(-3y) = -15y
Answer:
0.216
Step-by-step explanation:
Probability is the ratio of the number of possible outcome to the number of total outcome.
The probability that an event will happen added to the probability that the event will not happen gives 1. In other words, the outcome of a probability cannot exceed 1.
The probability that an event a will happen or that another independent event b will happen is the sum of the probability that a will happen to the probability that b will happen.
The probability that the event B will occur 3 times in a row may be interpreted as BBB and in probability, "and" is interpreted as multiplication while "or" is addition.
Pr(BBB)
= 0.6 * 0.6 * 0.6
= 0.216
Answer:
The value of x = -0.46
Step-by-step explanation:
∵
÷ 
∴ 
* Subtract the power of the same bases
∴ 
* Let 
∴ 
∴ 4y² - 1 = -3y
∴ 4y² + 3y - 1 = 0 ⇒ factorize
∴ (4y - 1)(y + 1) = 0
∴ y + 1 = 0 ⇒ y = -1
∴ 4y - 1 = 0 ⇒ 4y = 1 ⇒ y = 1/4
∵ 
∴ y = -1 refused (
never gives -ve value)
∴
⇒ insert <em>ln</em> in both sides
∵
⇒ <em>ln</em>(e) = 1
∴ 3xln(e) = ln(1/4)
∴ 3x = ln(1/4)
∴ x = [ln(1/4)] ÷ 3 = -0.46
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