Answer: -1
Step-by-step explanation:
1-(-1^2)+(-1^3) = 1-1+(-1)= -1
Answer:
a. $11.10
b. 1 689/1110
c. 1.62
d. 15 necklaces
e. $166.50
Step-by-step explanation:
Materials = $2.51
Labor = $4.38
Cost of production = $2.51 + $4.38
= $6.89
Sales price = $17.99
a. Profits = sales price - cost of production
= $17.99 - $6.89
= $11.10
Sally earn $11.10 when she sells a necklace
b. Sales price = $17.99
Profits = 11.10
Fraction of sale price that is profits = $17.99 / $11.10
Multiply both numerator and denominator by 100
= 1799/1110
= 1 689/1110
c. Sales price = $17.99
Profits = 11.10
Decimal of every dollar of the sale price of the necklace that is profit = $17.99 / $11.10
= 1.6207
Approximately 1.62
d. Total selling price of necklace = $269.85
Selling price of each necklace = $17.99
Number of necklace sold = Total selling price of necklace / Selling price of each necklace
= $269.85 / $17.99
= 15 necklaces
(e)
Profits earned per necklace = $11.10
Total profits earned = Profits earned per necklace × Number of necklace sold
= $11.10 × 15
= $166.50
As a mixed number it is, 3 24/100. Reduced is 3 6/25
Since the first car travels 55 miles per hour and starts an hour early, by 4:00 it is 55 miles away from the other car. Therefore, the equation is 55+a(some value)+b(another value)=380. If a car travels 55 miles per hour, that means that we add 55 for each hour and 55*x (if x is the number of hours) is the distance traveled. We have accounted for the first hour, so this is similar to saying that they start 55 miles away at 4:00 and go from there. For the other car, since it travels 75 miles per hour, its distance in hours is 75*x (the amount of time spent should be the same if we start at 4:00). Therefore, since they travel away from each other, our total distance is 55+55x+75x=380. Subtracting 55 from both sides (and combining like terms), we get 130x=325. Next, we divide both sides by 130 to get 2.5 hours, or 2 hours and 30 minutes
hope that helps
Standard form: 314,207
expanded form: 300,000+10,000+200+7
word form: three hundred fourteen thousand, two hundred seven