4:24 i’m pretty sure i haven’t done ratios in a while
Answer:
2.5 hours
Step-by-step explanation:
Given that :
Temperature in Neil's city :
72.6° and rising by 1.3° per hour
Temperature in Sheppard's city :
80.4° and dropping by 1.82° per hour
In how many hours will the temperature in Neil's city be no less than the temperature in Sheppard's city
Let number of hours = h
Hence, Neil city :
72.6 + 1.3h
Sheppard city:
80.4 - 1.82h
72.6 + 1.3h ≥ 80.4 - 1.82h
1.3h + 1.82h ≥ 80.4 - 72.6
3.12h ≥ 7.8
h ≥ 2.5
Two and half hours (2 hours 30 minutes)
Answer:
24 m²
Step-by-step explanation:
Given that:
Dimension of bedroom = 6 meter by 4 meter
To obtain how much carpet Lisa would need to cover the floor of her bedroom, we calculate the area of the room.
From the dimension given, the area of the room can be obtained using the Area if a rectangle formular :
Area of room = Length * width
Area of room = 6m * 4m
Area of room = 24 m²
Carpet required is 24m² of carpet
Answer:
0.000001 = 0.0001% probability that exactly 2 of them have never been married
Step-by-step explanation:
For each employed women, there are only two possible outcomes. Either they have already been married, or they have not. The women are chosen at random, which means that the probability of a woman having been already married is independent from other women. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
74% of employed women have never been married.
This means that 
15 employed women are randomly selected
This means that 
a. What is the probability that exactly 2 of them have never been married
This is P(X = 2).


0.000001 = 0.0001% probability that exactly 2 of them have never been married