Tutors Answer Your Questions about expressions (FREE)
Question 43382: Solve for R:
1/R = 1/A + 1/B
I thought I had this worked out, but was not sure I could do what I did. I multipled both sides of the equation by 1/1 which allowed me to end up with R = A + B. Can this be correct? What did I do wrong?
John
Click here to see answer by psbhowmick(878)  |
Question 44342: derrik and samantha are sellin tickets for their school musical. floor seats cost $7.50 and balcony seats cost $5. samantha sells 60 floor tickets and 70 balcony seats, derrik sell 50 floor seats and 90 balcony seats. evaluate the expression to determine how much they collected.
thank you
Click here to see answer by Nate(3500) |
Question 45166: help.. I got this wrong,and im totally lost..
state each of the following systems by using either addition or substitution.If a unique solution does not exist,state whether the system is dependent or inconsistent.
10x+ 2y =7
y= -5x+ 3
Click here to see answer by Earlsdon(6294) |
Question 46261: Hello, is *c* the correct answer here?
Which expression represents an example of the distributive property?
(a) 2(x + 3) = 2x + 5
(b) 2(x + 3) = 2x + 6
(c) 2(x + 3) = 2x + 23
(d) 2(x + 3) = 2x + 3
If I got it wrong can you tell me which is right and why? Thank you!
Click here to see answer by Earlsdon(6294) |
Question 46534: This is the exact question:
Express the product of a number increased by 15, and the number -8
This is what I did:
2.2.2.2.2.2.2 . 2.2.2.2.2.2.2.2=
2^7 . 2^8 = 2^7+8 = 2^15
AND
5^-4 . 5^4 = 5^-8
Is that right, and does the question sound like they want me to actually work the problem I created?
Thank you!
Click here to see answer by Earlsdon(6294) |
Question 46589: Can someone help me on this?
The kinetic energy of a particle of mass m is found by taking one-half of the product of the mass (m) and the square of the velocity (v). Write an expression for the kinetic energy of a particle.
Thanks,
Sher
Click here to see answer by Nate(3500) |
Question 46588: Could someone help me on this?
It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year?
Thanks,
Sher
Click here to see answer by Nate(3500) |
Question 46637: Can someone help me on this?
Suppose that the temperature outside is dropping at a constant rate. At noon, the temperature is 70 degrees F and it drops to 58 degrees F at 5:00 P.M. How much did the temperature change each hour?
Thanks,
Lyn
Click here to see answer by checkley71(8403) |
Question 46810: Can someone out there help me with this problem. I have put this problem through twice and havn't gotten a response.
I need to insert grouping symbols in the proper place so that the given value of the expression is obtained.
5 - 3 . 2 + 8 . 5 - 2; 28
Thanks,
Sher
Click here to see answer by stanbon(75887) |
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