# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 153617: I need help solving this equation. The attendance at a baseball game was 400 people. Student tickets cost \$2 and adult tickets cost \$3. total ticket sales were \$1050. How many tickets of each type were sold? I need to write two equations to solve this problem. I got this far: s= students = \$2 a= adults = \$3 attendance = 400 tickets sales = \$1050 Click here to see answer by scott8148(6628)

 Question 153613: hi, my name is jay, and i am struggling with this question. the question is: if a pitcher throws a baseball 90 miles per hour, how many seconds does it take for the ball to reach home plate? here's what i've tried: time equals distance divided by speed i divide 60.5 feet by 90 mph, and i get .6722 seconds. Then i thought, can i really solve this equation this way? can i use feet in distance as the numerator and miles per hour in divisor. I'm not sure how to solve this. thank you so much for your time. Jay Click here to see answer by stanbon(57967)
 Question 153613: hi, my name is jay, and i am struggling with this question. the question is: if a pitcher throws a baseball 90 miles per hour, how many seconds does it take for the ball to reach home plate? here's what i've tried: time equals distance divided by speed i divide 60.5 feet by 90 mph, and i get .6722 seconds. Then i thought, can i really solve this equation this way? can i use feet in distance as the numerator and miles per hour in divisor. I'm not sure how to solve this. thank you so much for your time. Jay Click here to see answer by scott8148(6628)
 Question 153613: hi, my name is jay, and i am struggling with this question. the question is: if a pitcher throws a baseball 90 miles per hour, how many seconds does it take for the ball to reach home plate? here's what i've tried: time equals distance divided by speed i divide 60.5 feet by 90 mph, and i get .6722 seconds. Then i thought, can i really solve this equation this way? can i use feet in distance as the numerator and miles per hour in divisor. I'm not sure how to solve this. thank you so much for your time. Jay Click here to see answer by Earlsdon(6294)

 Question 153861: write an equation to solve the problem. the service pool built a pool that was 100ft by 60ft wide. they want to built a sidewalk around the pool and had 450ft of fence. what is the maximum width that the sidewalk can be? Click here to see answer by checkley77(12569)

 Question 154006: After a nad day on Wall Street, Mr.Magnum lost 30% of his money, but he had \$3500 left. How much money did he originally have at the beginning of the day? Click here to see answer by checkley77(12569)

 Question 154012: On a christmas package Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing \$5.76 in postage? Click here to see answer by checkley77(12569)

 Question 154090: what is 81% of 285? identify the base. solve for the amount Click here to see answer by checkley77(12569)

 Question 154149: 72y to the 4th - 24y to the 3rd + 2y to the 2nd. Click here to see answer by stanbon(57967)

 Question 154163: fill in the missing.... z to the 3rd - 1 = ( )(z to the 2nd+z+1) Click here to see answer by orca(409)

 Question 154161: fill in the missing.... x to the 3rd + 216 = ( ) (x to the 2nd - 6x + 36) Click here to see answer by orca(409)

 Question 154160: 9w to the 3rd + 24w to the 2nd + 16w Click here to see answer by checkley77(12569)

 Question 154178: How do you know when an equation has no solutions? Click here to see answer by stanbon(57967)

 Question 153786: i can't even figure out how to begin this problem, i have looked in the book and nothing seems to be helping Click here to see answer by Alan3354(31518)

 Question 154245: What is f(x) if f(x) = z(x)+2 and z(x)=2x-3? Click here to see answer by mangopeeler07(462)

 Question 154421: F(x)=3x-5 and g(x)=1-x^2 find (FoG)(x) and (GoF)(x) A line passes through the points (7,-3) and (1,3),find the standard form of the line(ax+by=c) Click here to see answer by jim_thompson5910(28715)

 Question 154438: i have tried to solve this equation but i can't help me solve it please: (0.26+y)+3y=0.98 i'm pretty sure that you can help me plz the name of my textbook is ALGEBRA1 CALIFORNIA EDITION section:3-3 page:128 problem:47 Click here to see answer by scott8148(6628)

 Question 152655: Where are you looking if the indices i and j are equal in a square matrix? a. Along the middle row b. Along the middle column c. Along the diagonal from the upper left to the lower right d. Along the diagonal from the lower left to the upper right Click here to see answer by Edwin McCravy(8999)

 Question 154600: 5) A tennis club offers two payment options: Option 1: \$42 monthly fee plus \$5/hour for court rental Option 2: No monthly fee but \$8.50/hour for court rental. Let x = hours per month of court rental time. a) Write a mathematical model representing the total monthly cost, C, in terms of x for the following: Option 1: C=_________________ Option 2: C=_________________ b) How many hours would you have to rent the court so the monthly cost of option 1 is less than option 2? Set up an inequality and show your work algebraically using the information in part a. Click here to see answer by oscargut(900)

 Question 154636: I really need help can somebody polease help me? 1. Determine whether the following equations have a solution or not? Justify your answer. a) x2 + 6x - 7 = 0 b) z2 + z + 1 = 0 c) (3)1/2y2 - 4y - 7(3)1/2 = 0 d) 2x2 - 10x + 25 = 0 e) 2x2 - 6x + 5 = 0 f) s2 - 4s + 4 = 0 g) 5/6x2 - 7x - 6/5 = 0 h) 7a2 + 8a + 2 = 0 2. If x = 1 and x = -8, then form a quadratic equation. 3. What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation. 4. Create a real-life situation that fits into the equation (x + 4)(x - 7) = 0 and express the situation as the same equation. Click here to see answer by stanbon(57967)

 Question 154662: I keep getting stuck on soving for T & B on the following Please help :) This is an example in the book B=0.20[\$100,000-0.40(\$100,000-B)] B=0.20(\$100,000-\$40,000 +0.4B) B=0.20(\$60,000 + 0.4B) B=\$12,000+0.08B 0.92B=\$12,000 B=\$13,043.48 Can you please explain to me how the example arrived at .92B=\$12,000 in the line second from the bottom? Thank you so mucu :0) Elizabeth Click here to see answer by stanbon(57967)

 Question 154658: I would like to know if this problem I did is correct and if not what did I do wrong? This is set up as fractions: x+2/4 = 2x+4/2= x/2=2x +2 x= 4x +4 -3x=4 x=4/3 Click here to see answer by stanbon(57967)

 Question 154660: When a parallel circuit has only two branches, the equivalent resistance of the circuit is given by the following:PV = 120000(1 + 0.05)with an exponent of 5 My answer is PV = 120000(1.25) PV =150000 Is this correct? Click here to see answer by Alan3354(31518)

 Question 154723: Not sure on how to solve this. Use factoring to solve each equation for real values of the variable. Please help me solve this problem: x - 13x^1/2 + 12 = 0 Click here to see answer by checkley77(12569)

 Question 154731: fraction 4/x = 5/7 solve and check work Click here to see answer by checkley77(12569)

 Question 154726: I don't know how to solve this equation. Use factoring to solve each equation for real values of the variable. Please help me solve this problem: 6p + p^1/2 - 1 = 0 Click here to see answer by checkley77(12569)

 Question 154719: Not really sure on what I'm suppose to do. This is all I know. PRACTICE: Use factoring to solve each equation for real values of the variable. Please help me solve this equation: z^3/2 - z^1/2 = 0 Click here to see answer by Alan3354(31518)

 Question 154889: I am needing to find the x coefficient of this y=9.5x-1250 Click here to see answer by oscargut(900)