Answer:
The middle point is 3
Step-by-step explanation:
Solutions
Annie puts $10 into a vacation jar each week and we need to find out <span>how much will she have saved by the end of the year. To solve the problem first we have to find out how many days there are in a year and convert them into weeks.
Days in a year = 365
To find weeks divide by 7 since a week consists of 7 days.
365 </span>÷ 7 = 52
<span>
1 year has 52 weeks
our next step is to multiply 52 by 10.
52 x 10 = 520
By the end of the year she would have saved 520 dollars. </span><span />
Answer:
The events are mutually exclusive.
Step-by-step explanation:
Mutually exclusive event is simply event where the occurrence of one prevents the occurrence of the other. Better put - a disjointed event.
From the illustration, we have been given an assumption, which is, each student has only one major. As such, we have two independent events:
1. A student who only majors in Mathematics
2. A student who only majors in Chemistry.
The implication is that any student chosen could only possess one major and from the illustration, we could only choose one. It therefore follows that choosing one student major prevents the opportunity to field another student major.
Hence, we say such events are mutually exclusive.
Answer:
The minimum average speed needed in the second half is 270 km/hr
Step-by-step explanation
We can divide the track in two parts. For the first half of the track the average speed the car achieved was 230 km/hr and we need to make sure that the average speed of the full track is 250 km/hr. Then, we can calculate the average speed of the two parts of the track and force this to be equal to 250 km/hr. In equation, defining 
as the average speed of the second half:
Solving for 
Therefore, achieving a speed of 270 km/hr in the second half would be enough to achieve an average speed of 250 on the track.
