Questions on Algebra: Equations answered by real tutors!

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Question 701689: If y varies inversely as x, and y=15 when x=4, find y when x=10.
I got y=37.5.
But I could be wrong, help please?
(Algebra III, Variation)
Click here to see answer by jim_thompson5910(35256)

Question 701718: 54=-7(2-)
Click here to see answer by Alan3354(69443)

Question 701761: Write 6.55 * 10 -3 in regular decimal notation.
Click here to see answer by josmiceli(19441)

Question 701854: Can you assist me in simplifying this question?
Click here to see answer by mouk(232)

Question 701854: Can you assist me in simplifying this question?
Click here to see answer by Edwin McCravy(20054)

Question 701870: I cant seem to to figure out the right answer here.
question: how can I a breakdown of
1/8*4/5
I did this: (1*4)(8*5)= 4/40
I am also tried (1*5)(8*5)x(4*8)(5*8)= (5/40)x(32/40)=160/40= 4/40
Am I wrong on both accounts?
If you could help me with this. Thank you! I am struggling to find the answer.
Click here to see answer by Stitch(470)

Question 701896: solve for x
3-4x= -11
My response comes out to x= -14/-4 (or -7/-2) but doesn't seem right
Click here to see answer by lynnlo(4176)

Question 701888: If 2x-3(x+4)=-5,then x=
2x-3x-12=-5 (use distributive property)
-x-12+12=-5+12 (like terms)
-x=7
x=-7
Click here to see answer by aves(2)

Question 701907: x=5 and x=-5
Click here to see answer by mouk(232)

Question 701969: Solve for x
4x+3/1-2x=3/8
Click here to see answer by rfer(16322)

Question 702030: 5/8=4x+3/24
Click here to see answer by rfer(16322)

Question 702079: 5/8 + 8/n + 3/n =
Solve for n
Solve for answer.
Thank you
Click here to see answer by josgarithmetic(39616)

Question 702081: "what is the price decreased by $4 is $29"

Click here to see answer by sofiyac(983)

Question 702127: solve for the equation for x:y= mx + b
Click here to see answer by sofiyac(983)

Question 702180: W=3y+3z, for y
solve for y
Click here to see answer by MathLover1(20849)

Question 702210: x is greater than or equal to -1 i need this to be numberline graph
Click here to see answer by neatmath(302)

Question 702371: can you help me solve this equation 7-3c=2(c+6)
and this please
a=3b+c making b the subject for the formula

thanks
Click here to see answer by stanbon(75887)

Question 702437: what is the solution of 7
- x - 19 = -13 + 2x?
2
Click here to see answer by jim_thompson5910(35256)

Question 702436: Twice the sum of 4 and x is less than 216

Click here to see answer by jim_thompson5910(35256)

Question 702505: Write the slope intercept form of the equation of the line described.
through (2,-5) and perpendicular to y=2/7x+1
Click here to see answer by lwsshak3(11628)

Question 702541: I am trying to find the eqaution to solve how many cups are in 7 pints knowing that there are 2 cups in a pint. HELP!!!
Click here to see answer by josmiceli(19441)

Question 702548: X^2+x+1=0
Click here to see answer by solver91311(24713)

Question 702572: Hi. Here is my problem:
(a) A highway patrolman traveling at the speed limit is passed by a car going 5 mph faster than the speed limit. After one minute, the patrolman speeds up to 70 mph. How long after speeding up until the patrolman catches up with the speeding car. The speed limit is 55 mph.
(b) Same question, but this time the patrolman speeds up to a speed of v mph (v>60).
Thanks in advance!
Your response is appreciated.
Click here to see answer by solver91311(24713)

Question 702778: Could you show me the steps for the following algebra word problem?
When all n teams in a league play every other team twice, a total of N games are played, where N=n(squared)- n. A soccer league has 8 teams and all teams play each other twice. How many games are played?
Click here to see answer by solver91311(24713)

Question 702892: Need help solving
Z-3 over 10=10
Click here to see answer by mouk(232)

Question 702894: q^2+6q-7=0
Click here to see answer by jpvn2015(54)

Question 702930: t+3t=-8

Click here to see answer by checkley79(3341)

Question 702973: How do you solve this question (a+4)(a+1)=0
Click here to see answer by mouk(232)

Question 702962: 1.) -22=11-6a (11 minus 6 times what = negative 22)
2.) -40=m-10m (what minus 10 times what = negative 40)
3.) 13t=35 ( 13 times what = 35)

three different questions im sorry but i have even more than five and i have been going through a lot so can u at least answer all my homework questions i spent nearly 7 hours on it and i still have nothing im so desperate rite now help me
Click here to see answer by checkley79(3341)

Question 703019: how do you solve (3a^4b^12)^2/ab^10 ?
Click here to see answer by lynnlo(4176)

Question 703091: What does n/4 - 1 = 10?
Click here to see answer by jim_thompson5910(35256)

Question 703152: if 1/4 of the students walk, 1/3 get dropped off, 1/6 ride bikes, and 24 ride the bus, how many students are there?
Click here to see answer by josmiceli(19441)

Question 703151: Its been a while since I did math like this help
M=P (c+L)/T Solve for c
Click here to see answer by josmiceli(19441)

Question 703315: What is the answer 21r2power+35ry-3xr-5xy It says to solve by grouping.
Click here to see answer by Alan3354(69443)

Question 703351: Write in standard form y-4=5(x-8)
Click here to see answer by checkley79(3341)

Question 703367: 4-(-6)/-5
Click here to see answer by stanbon(75887)

Question 703387: 9/3+7=2-a
Thanks
Click here to see answer by checkley79(3341)

Question 703383: -5[p-4]-3[-2-p]=p-2 Find the value of P
Click here to see answer by checkley79(3341)

Question 703393: a collection of Halloween candy contains a total of 12 Snickers bars and Reeses Peanut Butter Cups. Chew on this: The grams of fat in these candy bars exceeds twice daily maximum desirable fat intake of 70 grams by 26.5 grams. How many bars of each kind of candy are contained in the Halloween collection? Snickers fat: 14 Reese's PEanut Butter Cup Fat: 13.7
Click here to see answer by josgarithmetic(39616)

Question 703247: when a number is added to 40 times its reciprocal the answer obtained is 2 less than three the number,what is number could be

Click here to see answer by ankor@dixie-net.com(22740)

Question 703539: how do you turn this equation
x+3y=9
into this
y=mx+b ????
Click here to see answer by stanbon(75887)

Question 703527: how can i get an answer to: Use whatever information you are ginven to write the wquation of a lne in slope intercept form. y=mx+b

Click here to see answer by Alan3354(69443)

Question 703597: X+4/9=13
Click here to see answer by lynnlo(4176)

Question 703606: I cant solve this,
x/x+2=3/2
Click here to see answer by rimjhim.tomar(21)

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