Algebra questions, need help?
1. 2x+17=55 -- Subtract 17 from both sides. So then it's.... 2x=38 Then divide each side by 2x x=19 Makes sense because if you do fill in the 'x' 2(19)+17=55 3. -(x-3)-2(x-4)=7 I like to change it to addition -1(x+-3)+-2(x+-4)=7 Remember, if theres no number next to the parenthesis it's a 1. Distribute the 1 and the 2. -1x+3+-2x+8=7 Add like terms -3x+11=7 Subtract 11 to both sides. -3x=-4 Divide each side by -3x x=4/3 I think. I'm not sure about this one. Hope I helped.
Algebra question!! Need Help!!!?
"In a chemistry class, 8 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?" I have no idea how to do this type of problem and dont know where to start. Can someone help me, step by step! I'll really appreciate it!
Need help with algebra 2 question?
z = 5y - 2x + 9 when x=10 and y=3, z = 5*3 -2 *10 +9 = 15 - 20 + 9 = 4
Need help with Algebra Question?
Nasty question this one! You really need to use excel or trial and improvement. The box is a bit like the type you get in the bakers - it's worth cutting 6 squares out of a piece of paper to see how it folds. The height of the closed box will be x The width will be 20 - 2x allowing for the 2 cut out squares The length will be 40 - 3x allowing for the 3 cut outs BUT you divide this by 2 because of half being folded over to make the lid. The Volume = x((40 - 3x)/2) (20 -2x) = 500 This expands to a cubic 3x3 - 70x2 + 400 = 500 Answer is about 1.75 I hope this helps but nobody else seems to have answered:)
Need Help with algebra question fast?
Here is the problem Please show work not just answer ( I have more problems like these and I don't know how to set up equation or anything. Thanks Your grandmother needs your help. She has $50,000 to invest. Part of this money is to be invested in non insured bonds paying 15% annual interest. The rest of this money is to be invested in a government-insured certificate of deposit paying 7% annual interest. She told you that she requires $6000 per year in extra income from both of these investments. How much money should be placed in each investment?
Need help on algebra question. Please help me?
The school drama club plans to attend a Shakespeare festival in 6 weeks. The total cost per person is $185.75. The club has $296 in its account and will divide the money equally among the 8 members who attend the festival. Troy is planning to attend the festival and has already saved $55. How much more money does Troy need in order to cover his cost to attend the festival?
Need help on Algebra question!! Please help me!!?
The Computer Club has a budget of $90 for a pizza party. The club can get large pizza for $10 and cases of soda for $3.50. The club would like to buy at least 5 large pizzas and at least 3 cases of soda. a. Write a system of linear equations that describes the given information. Use x for the number of large pizzas and y for the number of cases of soda the club will buy. b. Find the maximum number of cases of soda the club can buy if the club decides to buy 7 pizzas. c. Can the club buy 6 pizzas and 4 cases of soda? Your help is very much appreciated!
HELP W/ ALGEBRA QUESTIONS?? please. =]?
Question 1.. let x1 to be the height of 1st balloon x2= height of 2nd ballon r1= rising rate r2 = descending rate Form the equation: x1(t)= 20t+15 x2(t)= -16t+195 for the two balloons to be at the same height, the two equation which represent their height after t minute(s), must be the same.. hence x1(t)=x2(t) 20t+15=-16t+195 36t=180 the final answer is 5 minutes.. Question 2.. for 1st train, the equation is 8P-84, P=max passenger in a car 2nd train, 6P-10, P= as above then 8P-84=6P-10 2P=74 P=37. The equation 8p-84 means 8P= the maximum passenger the train can transport, and the number of passenger on board is the maximum minus the number of passenger that can be fit in more. So, 8P-84 will give the number of passenger at the moment. So is 6P-10. Hope this helps..
I have a couple of algebra questions i need help on if anyone would mind helping me please?
You can answer one or more- as many asyou would like thanks for the help 1. Simpllify: -(3)^0(3x^-2)^-1(y)^-1 2. (4a-3b)^2 a=5 and b=5 3. a^6* a^-8 4. [-3(-2)^-2]^-1 5. 10x^7y^3 / -5x^6y^7 6. {[(-4)^-2]^0}^-1 7. (-x)^-2(-x^-2)^2(-x^3) 8. [(4-2)^2 + 5] / 3 9. Charlene baby sits for $3 per hour and tutors for $6 per hour. because of school she can only work for 16 hours abd she wants to make at least $65. White a system of inequalities to satisfy this situation
I need help on how to understand algebraic rule of an equation?
To find the rule:Step 1: Find slope, m, using formula for slope: (Y-y)/(X-x).Take 2 points,(0,0) & (20,10) and plug them into formula: (10-0)/(20-0)=10/20 = 1/2Step 2: Find b , using formula y = mx+bTake m=1/2 and one point, (0,0) and put them in formula:0 = 1/2(0) + b --> 0 = bSo b= 0, m= 1/2. Plug these into y=mx+b. y = (1/2)x THAT IS THE RULE. ---Fill in the table:For the first y value solve y = (1/2)(-4) --> y = -2For the next x value solve 5 = (1/2)x --> x = 10You try the rest....If you have trouble comment. x should always be twice y.