What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.x = + √7/9 and x = ±1 x = + √7/9 and x = ±
2 answers:
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The function for the amount saved if they purchase a used drone rather than a new drone from Jim's store is f(x) = 0.45x
He sells used drones at 70% of the price (x).
So, the selling price of a used drone is:
Express percentage as decimal
Also, he sells new drones at 15% more of the price (x).
So, the selling price of a new drone is:
Express percentage as decimal
The amount saved is the difference between the prices of the drones.
So, we have:
This gives
Subtract
Express as a function
Hence, the function for the amount saved is f(x) = 0.45x
Read more about proportions at:
Answer: 32 times.
Step-by-step explanation:
You know that:
- The height of a largest leather work boot is 16 feet.
- The height of a typical men’s work bootsis 1/2 foot or 0.5 feet.
Therefore, to calculate how many times as tall as a typical work boot is the largest boot, you must divide the height of a largest leather work boots by the height of a typical men’s work boots.
Then, you obtain:
Therefore, the answer is: 32 times.