Answer:
-78
Step-by-step explanation:
4 Months is -312 so dividing by 4 will give the decrease of one month:
-312 ÷ 4 = -78
These | | simple mean absolute value. Absolute value is simply the number positive, for example, the absolute value of -3 is simply 3
Answer: your Answer is c my friend
Step-by-step explanation:
im not for sure but I think the answer is 9! my reasoning is below,,
Step-by-step explanation:

do the crossing method and it would result in this
(49×x) = (63×7)
after simplifying both sides
49x = 441
divide both sides by 49 and the result will be
x = 9 !!
Since we are given that the student has a brand Y phone, they are one of a sample of only 580 students. Since 80 of those students also own a brand X (they own both) the probability that the random student is one of those is 50/580 = 5/58 = 8.62%