Tutors Answer Your Questions about Linear-systems (FREE)
Question 343219: my problem is
in any triangle the sum of the measures of the angles is 180 degrees. In triangle ABC, angle A is four times as large as angle B. Angle C measures 20 degrees less than angle B. Find the measure of each angle.
we are suposed to turn it into an equation find an angle then solve the problem from there. i cannot think of an equation.
i have tried:
180= 4X+X-20
and other equations but none work
thank you for helping me!
Click here to see answer by mananth(16946)   |
Question 342806: A lady went for shopping and spent half of what she had on buying hankies and gave a rupee to a begger waiting outside the shop.She spent half of what was left on a lunch and followed with a two rupee tip.She spent half of the remaining amont on a book and three rupees on bus fare.When she reached home , she found that she had exactly one rupee left.How much money did she start with?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 343224: my problem is:
the sum of 3 numbers is 123. the second number is 9 less than two times the first number. the third number is 6 more than three times the first number. find the three number.
we are suppoed to make and equation and solve from there but i am not good at making an equations. i have tried to make many but none work.
thank you for helping me!
Click here to see answer by edjones(8007)  |
Question 343339: I have been working on this problem for over a half hour.
1/4+1/6=1/x
I have tried LCD which I know you are supposed to do which is twelve. I got to where 1/4=3 and 1/6=2 but I don't know what to do for 1/x.
So what I have is 3+2=1/x, what do I do next?
Click here to see answer by haileytucki(390)  |
Question 343930: Susan has a number of dimes and quarters in her pocket.
She has a total of 84 coins, and the total dollar value of all dimes and quarters is $15.
Write two equations, using variables “d” and “q” to represent the number of dimes and quarters Susan has.
Solve those two equations using either the substitution or elimination method to find how many dimes and how many quarters she has.
Click here to see answer by Fombitz(32388)  |
Question 343930: Susan has a number of dimes and quarters in her pocket.
She has a total of 84 coins, and the total dollar value of all dimes and quarters is $15.
Write two equations, using variables “d” and “q” to represent the number of dimes and quarters Susan has.
Solve those two equations using either the substitution or elimination method to find how many dimes and how many quarters she has.
Click here to see answer by stanbon(75887) |
Question 343930: Susan has a number of dimes and quarters in her pocket.
She has a total of 84 coins, and the total dollar value of all dimes and quarters is $15.
Write two equations, using variables “d” and “q” to represent the number of dimes and quarters Susan has.
Solve those two equations using either the substitution or elimination method to find how many dimes and how many quarters she has.
Click here to see answer by josmiceli(19441)  |
Question 344714: the question is:
Your piggy bank has a total of 47 coins in it; some are dimes and some are nickels. If you have a total of $3.95, how many nickels and how many dimes do you have? Show all of your work to receive full credit.
I tried for at least 20 min and only got this,
d+n=47
-d -d
.10d+.05n=3.95
n=d+47
.10d+.05(d+47)=3.95
.10d+.05d+2.35=3.95
.15d+2.35=3.95
-2.35 -2.35
.15d=1.6
/.15 /.15
d=10.66
Click here to see answer by ankor@dixie-net.com(22740) |
Question 344714: the question is:
Your piggy bank has a total of 47 coins in it; some are dimes and some are nickels. If you have a total of $3.95, how many nickels and how many dimes do you have? Show all of your work to receive full credit.
I tried for at least 20 min and only got this,
d+n=47
-d -d
.10d+.05n=3.95
n=d+47
.10d+.05(d+47)=3.95
.10d+.05d+2.35=3.95
.15d+2.35=3.95
-2.35 -2.35
.15d=1.6
/.15 /.15
d=10.66
Click here to see answer by scott8148(6628)  |
Question 346148: Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and as dependent or independent.
9x-4y=-24
4y-9x=24
What is the solution of the system of equations?
A. Infinite many solutions
B. No solution
C. A point
Is the system consistent or inconsistent?
Are the equations dependent or independent?
Click here to see answer by solver91311(24713)  |
Question 346273: Hi my 9th grade class is working on linear equations.The directions say sole each equation check your soultion.How would you solve what t is in this equation?
t/7=-5
see this is what i thought t/7=5/1 times t/7 which would be 5 times t and 7 times one which is 7? Can you pls help
Click here to see answer by Alan3354(69443)  |
Question 346507: A furniture manufacturer can make from 30 to 60 tables a day and from 40 to 100 chairs a day. It can make at most 120 units in one day. The profit on a table is $150, and the profit on a chair is $65. How many tables and chairs should they make per day to maximize profit. How much is the maximum profit?
P= 150x + 65 y
30 <= x <= 60
40 <= y <= 100
x + y <= 120
x => 0
y => 0
Graph your system of inequalities
Label the vertices and find their coordinates
Click here to see answer by Fombitz(32388) |
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