Tutors Answer Your Questions about expressions (FREE)
Question 85080: Hello out there,I'm having some problems that I need help with,the first one is,Express 0.0049 in scientific notation.The next one is,Express 7,200,000,000 in scientific notation.Next one is,A rectangle has side length 30 mm and diagonal length 34 mm.Find the length of the other side of the rectangle to the nearest whole number.And the last one is,A telephone pole is supported by a wire of length x.If the base of the wire x is 40 feet from the pole,which is 70 feet tall,what is the length of the wire to the nearest whole number.Thank you to whoever can help me.
Click here to see answer by checkley75(3666)  |
Question 86731: The variable x is 4 less than the variable y.
1. If the variable t is multiplied by 5, the result is equal to the variable R.
2. If 3 is subtracted from the product of the variables x and y, the result is equal to 4 times the variable z.
3. The quotient of the variable x with the variable y is 2 more than 0.7 of the variable z.
Click here to see answer by stanbon(75887) |
Question 86979: Tutor could you please help me with this problem, my practice worksheet asked me to "perform the indicated operation"????
thank you
3/2b minus 5/3b^3
Also what is the LCD for 7over a^2+2a-63*8 over a+9
Click here to see answer by stanbon(75887) |
Question 87209: Hi! I'd appreciate any help with this one.
5a^2 - 20/3a^2-12a divided by (a^3+2a^2/2a^2-8a * 9a^3 + 6a^2/ 2a^2-4a
I know the answer is 4a^2/9(a-1) but, I don't know how to get there. Or how to get rid of the 5 and how to get the (a-1).
Thanks so much for your help!
Click here to see answer by longjonsilver(2297)  |
Question 88427: The equation of a circle with centre O(0, 0) is x² + y² = 10. The points C(3, 1) and D(1, -3) are the endpoints of chord CD. EF right bisects chord CD at G. Verify that the centre of the circle lies on the right bisector of chord CD.
thank you
Click here to see answer by stanbon(75887) |
Question 88458: Good day to all,I need some help with some problems,the first one is,Simplify:x(4x^2+3x-5)-2(4-x^2).The next one is,Find the product:(b+2)(b+6).The third one is,Find the product:(7x+1)(x^2+1).And the last one is,Find the product:(2x+6)(x-10).Thanks to whoever can help me.
Click here to see answer by stanbon(75887) |
Question 88119: Hello out there,I need some help with some problems,the first one is,Factor completely:6y^2-2yz.The next one is,Factor completely:8g^2j-12h^3hj.The third one is,Factor.Write prime if the expression cannot be factored :s^2-s-6.And the last one is,Factor.Write prime if the expression cannot be factored:y^2-4y-5.Thanks for whoever can help.
Click here to see answer by elima(1433) |
Question 88936: These are on exponentials with logs; in case stan happens to see this, thanks alot for your help- I had to use my moms' last paycheck (she had to leave work to have surgery done on her anuerysms) to pay $400 for this class to make sure I have this Algebra II credit to graduate this upcoming year. You taking out time to do those 5 little problems were a BIG help and may god bless you.
2^x = 30
5^x - 1 = 3^x
3.5^3x + 1 = 65.4
16^x - 4 = 3^3 - x
7^x - 2 = 5^x
Click here to see answer by stanbon(75887) |
Question 88951: how do I evaluate each side of the equation to show that the same results is obtained. also identify the property of real numbers that is being illustrated. in these problems.
1.(37.9+25.2)+14.3=37.9+(25.2+14.3)
2. 2.73(4.534+57.12)=2.73.4.534+2.73.57.12
Click here to see answer by checkley75(3666) |
Question 89004: Hello out there,I need some help with some problems,the first one is,Factor.Write prime if the expression cannot be factored:49y^2-25.The next one is,Factor.Write prime if the expression cannot be factored:4x^2-24x+36.The next one is,Factor.Write prime if the expression cannot be factored:16e^2-4.And the last one is,Factor.Write prime if the expression cannot be factored:4k^2+20k+25.Thanks to whoever can help.
Click here to see answer by stanbon(75887) |
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