The last 8 is in the one-thousandths place so multiply the whole number by 1000 to get
-1808/1000 which is a fraction and thus by definition rational
Hello!
We can write an expression to show this scenario. Write this in the equation format y = mx + b:
m = rate of change, or cost per ride
b = initial cost, or cost to enter the fair
y = 2.50x + 4
Solve for the amount of rides possible with $21.50:
21.50 = 2.50x + 4
Subtract 4 from both sides to isolate x:
17.50 = 2.50x
Divide both sides by 2.50:
17.50/2.50 = 7 rides.
Given:
<span> Ballpoint Rollerball Fountain
Variation 1 2,400 1,400 550
Variation 2 3,100 2,000 370
Variation 3 2,850 1,100 720
TOTAL 8,350 4,500 1,640
</span><span>The cost of production is $1 per ballpoint pen, $2 per rollerball pen, and $4 per fountain pen.
Total cost:
8,350 x 1 = 8,350 ballpoint
4,500 x 2 = 9,000 rollerball pen
1,640 x 4 = 6,560 fountain pen
total 23,910
</span><span>Per variation:
</span>Variation 1 (2,400*1) + (1,400*2) + (550*4) = 2,400 + 2,800 + 2,200 = 7,400
<span>Variation 2 (3,100*1) + (2,000*2) + (370*4) = 3,100 + 4,000 + 1,480 = 8,580</span>
<span>Variation 3 (2,850*1) + (1,100*2) + (720*4) = 2,850 + 2,200 + 2,880 = 7,930</span>
The sum of known =179
The unknown = x
179+x/6=39
179+x =39*6
x = 234-179
Answer:
Part A: 20 students
Part B: 4 hours
Step-by-step explanation:
Part A:
To find the number of students surveyed, we count the number of x there are in the graph.
students = 1 + 2 + 3 + 5 + 1 + 1 + 3 + 2 + 2 = 20
Part B:
To find the mean, we need to find the total number of hours volunteered first.
hours = 1x0 + 2x1 + 3x3 + 5x3 + 1x4 + 1x5 + 3x6 + 2x7 + 2x8 = 80
Now, we can find the mean. We divide the total number of hours volunteered by the number of students.
Mean = 80 ÷ 20 = 4
