1,081 Answered Questions for the topic Equations

Equations

03/20/15

How can I plot y=-3/2x+3 on a graph ? What are the coordinates
math hw  
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03/19/15

It takes 8 painters 6hours to paint walls of a gym. How many person-hours does this require? How many hours will 12 painters take to paint the gym?
this problem makes no sense to me! Pls help!
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03/16/15

Need help solving the following equations on the interval (0,2pi)?
I'm having a lot of trouble trying to solve the equations algebraically on the interval (0,2pi). Any help is greatly appreciated!   1) tanx= 0   2) 4sin^2x-1=0
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Equations

03/16/15

Parentheses for 7-23-5=-7
The parentheses for the question
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Equations

03/16/15

How many times did he go on each ride?
Corion goes to the carnival. He goes in his favorite ride the Ferris wheel (4 tickets each ride) and the dizzy cups (3 tickets each ride). He uses 30 tickets and goes on the ferris wheel 4 times... more
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03/04/15

Mix some cashews costing $8 per kg with nuts costing $10 per kg. Wants to sell 12kg of the mixture for $8.50 per kg. How many kg of cashews are needed?
A grocer wants to mix together some cashews costing $8 per kg with some Brazil nuts costing $10 per kg. The grocer wants to sell 12 kg of the mixture for $8.50 per kg. How many kg of cashews are... more
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Equations Word Problem

03/04/15

The distance D that the spring in a produce scale
The distance D that the spring in a produce scale stretches is directly proportional to the weigh W of the fruits and vegetables placed in the pan. If 5 pounds of apples stretch the spring 0.3... more
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Equations

03/04/15

On wet, level pavenment
On wet, level pavement, the stopping distance, d in feet, for a car traveling at x miles per hours can be estimated by d(x)=1/9 x2+10/3. Use the function to approximate the speed of the car that... more
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Equations

03/04/15

An airplane flies 720 miles with the wind. In the same amount of time, it can fly 630 miles against the wind.
An airplane flies 720 miles with the wind. In the same amount of time, it can fly 630 miles against the wind. The speed of the plane is still air is 225 mph. Find the speed of the wind     Write... more
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Equations

03/04/15

Carol can weed a garden in 2 hours. Jen can weed the same garden in 5 hours. How long will it take them to weed the garden working together?
Carol can weed a garden in 2 hours. Jen can weed the same garden in 5 hours. How long will it take them to weed the garden working together?
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Equations

03/04/15

solve and check v6a+3-5=4
The root line goes all the way from 6a to 3.. 
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Equations Algebra Linear

03/04/15

Please help solve these simultaneous linear equations.
3x + y = 182x – y = 75x + 3y = 212x + 7y = 205x + 3y = 312x + y = 122x + 3y = 1-x + 2y = -47x + 2y = 172x – 2y = 1
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03/03/15

Which equation below will produce a decay curve?
A.)  y=3^x-4 B.)  y=2(4)^x C.)  y=1/2(3)^x D.)  y=6(1/3)^x   First of what is a decay curve and how do you find it?
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Equations

03/02/15

I must have been doing this wrong all along!
P=21+Q2-4Q   If Q=6, what is P?
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Equations

03/02/15

Urgent equation. I keep getting the wrong answer!
P=21+Q2-4Q    If Q= -2.5, what is P?   Please show working and explain.
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02/26/15

Finding area
The area of the Sahara Desert is 7 times the area of the Gobi Desert. If the sum of their areas is 4,000,000 square miles, find the area of each desert.
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Equations

02/25/15

a line is parallel to ax+5y= -15 and passes through the origin, where a is an integer.
Write the equation of the line.
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Equations

02/23/15

2 bags had 50 kg of sugar each After taking out 3 times as much sugar from bag 1 than ,2 bag 1 had 1/2 as much sugar left as 2How much sugar is left in each bag
s confusing please help
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Equations

02/23/15

Joanna orders catering for herself and 19 friends. It costs her $200 to get a bunch of bar-ritos and salads. If she wanted to split the coast amongst everyone,
Joanna orders catering for herself and 19 friends. It costs her $200 to get a bunch of bar-ritos and salads. If she wanted to split the coast amongst everyone, how much should she ask her friends... more
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02/22/15

Please help!! Select the approximate values of x that are solutions to f(x) =0, where f(x) = -9x^2 +4x+7
a) {-1.29,0.57} b) {-9,4} c) {-0.44,-0.78} d) {-0.69,1.13}  
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02/22/15

Please help me solve this!! Select the approximate values of x that are solutions to f(x) =0, where f(x) = -6x^2 +2x+4
a) {-0.67,1.00} b) {-6,2} c) {-0.33,-0.67} d) {-1.50,0.50}  
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02/22/15

Need help! Select the approximate values of x that are solutions to f(x) =0, where f(x) = -4x^2 +5x+7
a) {2.09, -0.84} b) {-4,5} c) {-1.25,-1.75} d) {-0.57,0.71}
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Equations

02/20/15

(x+6)^1/2+12=7(x+6)^1/4
(x+6)^1/2+12=7(x+6)^1/4
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Equations

02/14/15

consider the equations f(x)=-6x-1 and g(x)=4x^2 select the solution for (f+g)(x)
a)-6x-1+4x^2 b)-24x^3 -4x^2 c)-24x^2 -1 d)-6x-1-24x^2
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Equations

02/14/15

determine the equation of g(x) that results from translating the function f(x)=(x+2)^2 to the right 10 units
a) g(x) = (x-8)^2 b) g(x) = (x+12)^2 c) g(x) = (x+2)^2 -10 d) g(x) = (x+2)^2 +10
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