myiacoykendall
03.07.2019 •
Mathematics
Calculators were purchased at $62 per dozen and sold for $38 for three calculators. find the profit for selling 5 dozen calculators. round to nearest dollar
Solved
Show answers
More tips
- H Health and Medicine Is it true that working with a computer is harmful to your eyesight?...
- S Sport When is the Champions League final?...
- H Health and Medicine Is Folic Acid a Necessary Vitamin?...
- W Work and Career How to Start Your Own Business: Tips and Recommendations...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Mathematics
- M Mathematics If 30,000 is divided by 10 and then divided by 10 again what will be the resulting number? Help please...
- M Mathematics How many boxes that are 4 in tall 2in wide and 2in long can fit inside a box that is 16in tall 10in wide and 10in long...
- M Mathematics I need help, please I can t figure this out...
- M Mathematics Jack s lunch at a restaurant costs $13.00, without tax. He leaves the waiter a 17% tip of the cost of the lunch. What is the tip money Jack should leave?...
- M Mathematics Ethan earned 295 points and its video game last night. This night he earned 189 .He used 95 about .How many points did he have left?...
- M Mathematics Does this graph show a constant or variable rate of change?...
- M Mathematics hayden s book was 972 pages long.he had 12 days to read it.how many pages does he have to read every day to finish it ?...
- M Mathematics Need help, and i need explanation bc i dont get it. So please help me fast...
- M Mathematics If 4 is 25% of a value, what is that value?...
- M Mathematics The equation for the line of best fit is y=2x+2.5. Soon, Edmond is going to a new fair. Use the equation for the line of best fit to predict how many tickets he could purchase for...
Ответ:
Ответ:
Ответ:
step 2
Step-by-step explanation:
Given
(2x - 3)(5x² - 2x + 7)
2x(5x² - 2x + 7) = 10x³ - 4x² + 14x ← step 1 is correct
- 3(5x² - 2x + 7) = - 15x² + 6x - 21 ← step 2 in her working is incorrect
Adding the results from step 1 and step 2
10x³ - 4x² + 14x - 15x² + 6x - 21 ← collect like terms
= 10x³ - 19x² + 20x - 21