Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)
Question 174628: 6) If 4^x = 2^y and 9^x-1 = 3^x+1, which of the following are the values of x and y?
(a) x = 2, y = 4 (b) x=3, y=6 (c) x=4, y=2 (d) x=6, y=3
7)When David was born, his grandparents deposited $1,000 in a college account that promised 4 percent interest compounded annually for 18 years. Which of the following equations shows the worth of the account when David is 18?
(a) y = 18(4)($1,000)
(b) y = 18(0.04)($1,000)
(c) y = $1,000(0.04)^18
(d) y = $1,000(1.04)^18
Show work thanks so much!
Click here to see answer by ankor@dixie-net.com(22740)   |
Question 174666: (12) The number of electric blankets sold at Jenkin's Home Furnishings from January 1 through December 31 can be represented by the function y= 680cos(pie/6 t) + 708 in which t is time in months with t =0 corresponding to january 1. Determine when the fewest electric blankets were sold and how many were sold.
Show work thanks
Click here to see answer by stanbon(75887) |
Question 174749: Would someone please help me with this I'm just not getting it. Thank you!!
Make sure to supersript all exponents in the final answers should be positive. Final answers should have all single connecting signs and be arranged in descending order.
A) Perform the indicated operations:
(5x^2-3x+2)+(-3x^2+9x-8)-(x^2+3x-10)
B) Use FOIL to multiply:
(3x-8)(x-7)
Click here to see answer by stanbon(75887) |
Question 174764: Make sure to supersript all exponents in the final answers should be positive. Final answers should have all single connecting signs and be arranged in descending order.
1) For f(x)=3x-5,find(2).
2)Multiply
(4x+1)(2x^2+5x+1)
Click here to see answer by Mathtut(3670) |
Question 175089: is there somewhere on the internet where it could help me solve the question?
Here is one of the questions it says Remove the radical from the denominator of the following fraction without changing the value of the fraction. could you please explain this to me step by step and show me this method with an example?
Click here to see answer by solver91311(24713)  |
Question 175802: 13) Simplify SR(45x^23)
14) Simplify 4th root of (x^5 divided by 16y^15)
15) Simplify (x1/4 y1/2)2(x2y3)1/2
thanks so much.....so confused....can you show the steps please??? math is my weakest subject!!
Click here to see answer by gonzo(654) |
Question 175954: It takes Erin 24 min less time to commute to work than it does George. Suppose that the variable x stands for the time it takes George to get to work. Then x-24 stands for the time it takes Erin to get to work. How long does it take Erin to get to work if it takes George 56 mins?
Click here to see answer by gonzo(654) |
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