Skylar4483
07.10.2019 •
Mathematics
Roshaun and lea go to an amusement park. lea spends 1/2 of her money, and roshaun spends 1/4 of his money. is it possible for roshaun to have spent more money than lea? explain your reasoning
Solved
Show answers
More tips
- 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...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics 1/2 (x + 8) - 15 = - 3...
- M Mathematics If you multplied 5x10, would you get the same answer as 5x5x5? Explain your reasoning. DO NOT G O O G L E THE ANSWER...
- M Mathematics BD is the angle bisector of ZABC Sx-y B D 2x+y 14+y /x+13y x=[ ? ] Enter...
- M Mathematics Find the slope Y intercept Write model X 0,3,6,8 Y 4,3,2,1...
- M Mathematics Hello, ive been having issues with a quite easy topic. Slopes of lines? I dont really know how to solve this....
- M Mathematics P→ P (3,-1) for (x,y) → (x-1,y) and reflection line y=5. Find the coordinates of P. The coordinates of P are ? Please and thank you!...
- M Mathematics Walter is making a 300-miletrip from Wichita Falls, Texas, to Austin. After the first 120 miles, he continues driving at 65 mph. If the equation 120 + 65.x = 300 is used...
- M Mathematics Answer the question in the pic correctly( best answer gets brainliest)...
- M Mathematics Consider the initial value problem y =-9ty^2 ;y(0)=y0Solve the given IVP...
- M Mathematics Solve for x, find the measure of all angles....
Ответ:
Ответ:
Since we want to solve for the variable x, we want to isolate x
a²x + (a - 1) = (a + 1)x ⇒ Distribute x to (a+1). Also, remove parentheses
a²x + a - 1 = ax + x ⇒ Subtract a from both sides
a²x - 1 = ax + x - a ⇒ Add 1 to both sides
a²x = ax + x - a + 1 ⇒ Subtract (ax + x) from both sides
a²x - (ax + x)= ax + x - a + 1 - (ax+x) ⇒ Simplify. Remember that multiplying positive by negative = negative
a²x - ax - x = ax + x - a + 1 - ax - x ⇒ Simplify
a²x - ax - x = -a + 1 ⇒ Factor out the x from a²x - ax - x
x(a² - a - 1) = -a + 1 ⇒ Divide both sides by (a² - a - 1)
x = (-a + 1) / (a² - a - 1)
However, we need to make sure that the denominator does not equal 0. Therefore, you set the denominator = 0 (just use the quadratic formula for this), and it gives that the denominator =0 when a = (1+√5)/2 AND (1-√5)/2
Therefore, the final answer is
x = (-a + 1) / (a² - a - 1) given that a ≠ (1+√5)/2, a ≠ (1-√5)/2