Answer:
1 7/10
Step-by-step explanation:
4 1/5-2 1/2 = 17/10 = 1 7/10
The center of the clock is taken as the origin.The clock is a circle with a diameter 10 units.Radius is half the diameter .Radius = 10 ÷2= 5 units.
The clock is divided in four quadrants .On x axis y=0 and on y axis x=0.
When it is 12 o'clock the hour hand is on positive of y axis.Coordinates of the point at 12 o'clock=(0,5)
When it is 3 o 'clock the hour hand is on positive of x axis .Coordinate of the point at 3o'clock is (5,0)
When it is 6 o'clock the hour hand is on negative of y axis .The coordinates of the point at 6o'clock is (0,-5)
At 9o'clock the hour hand is on negative of x axis .The coordinate of the point at 6o'clock is(-5,0)
Answer:the number of children that swam in the public pool that day is 222
the number of adult that swam in the public pool that day is 259
Step-by-step explanation:
Let x represent the number of children that swam in the public pool that day.
Let y represent the number of adult that swam in the public pool that day.
On a certain hot summer day, 481 people used the public swimming pool. This means that
x + y = 481
The daily prices are 1.25 for children and 2.25 for adults. The receipts for admission totaled to 86.25. This means that
1.25x + 2.25y = 860.25 - - - - - - - -1
Substituting x = 481 - y into equation 1, it becomes
1.25(481 - y) + 2.25y = 860.25
601.25 - 1.25y + 2.25y = 860.25
- 1.25y + 2.25y = 860.25 - 601.25
y = 259
Substituting y = 259 into x = 481 - y, it becomes
x = 481 - 259
x = 222
Answer:
My guess is 21
Step-by-step explanation:
Answer:
d. Cluster
Step-by-step explanation:
Random: Random is asking a group of people from a population. For example, to estimate the proportion of Buffalo residents who are Bills fans, you ask 100 Buffalo residents and estimate to the entire population.
Systematic: Similar to random. For example, you want to estimate something about a population, and your sample is every 5th people you see on the street.
Cluster:Divides the population into groups, with geographic characteristics.. Each element is the groups is used. Suppose you want to study the voting choices of Buffalo Bills players. You can divide into offense, defense and special teams, and ask each player of these 3 groups.
Stratified: Done on a group of clusters, that is, from each cluster(group), a number of people are selected.
In this problem, we have that:
All employees at three stores of a large retail chain were asked to fill out a survey.
Divided by clusters(stores).
So the orrect answer is:
d. Cluster
