Answer:
The last part.
Step-by-step explanation:
The error is only at the last part. Basically the answer part.
The answer should be —
We don't multiply the square roots when adding or subtracting. That'd contradict the rules.
Here, we let the square root of five as x-term.
As we add up, we would get 13x. Thrn we convert x-term back to square root of five.
The answer would be —
Remember that we don't multiply the square roots when adding or subtracting.
20, because 5 there and five back then 1 and 1 back and four and four back if not then just add all 5+4+1=10
Answer:
25
Step-by-step explanation:
Each of the 16 "ratio units" representing all 80 dancers must stand for ...
(80 dancers)/(16) = 5 dancers
Then 5 "ratio units" representing seventh-grade dancers will stand for ...
5 × 5 dancers = 25 dancers
___
Another way to figure this is to write the proportion ...
(seventh-grade dancers)/(all dancers) = 5/16
seventh-grade dancers = (all dancers)×(5/16) = 80×5/16
seventh-grade dancers = 25
Answer:
5.2 hours or 312 minutes
Step-by-step explanation:
The plane route has been given as 260 miles.
We're told that the car/road rouge is 10% longer, and that is 260 * 1.1, which is equal to 286 miles.
Now, the car travels at 55 miles per hour, and we're to calculate how long it will take to travel.
Speed = distance / time
Making time the subject of formula, we know that
Time = distance / speed
Time = 286 miles / 55 miles per hour
Time = 5.2 hours, converting to minute, we have 5.2 * 60 = 312 minutes.
Saying that the result is "at most" one tail means that there can be zero or one tail.
Consider the sample space S, which is the set of all possible outcomes: S = {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}. Therefore: S = 8.
Now, consider the event space E, which is the set of successful outcomes: E = {TTT, TTH, THT, HTT}. Therefore: E = 4.
The probability will be:
p = E / S = 4 / 8 = 0.5
Hence, when <span>three coins are tossed the probability that the result is at most one tail</span> is 50%.
