A chemist currently has two solutions of sodium chloride. One solution has a 5% concentrate and the other has a 25% concentrate. The chemist needs to make 10 L of a 10% sodium chloride solution. Let...

A chemist currently has two solutions of sodium chloride. One solution has a 5% concentrate and the other has a 25% concentrate. The chemist needs to make 10 L of a 10% sodium chloride solution. Let...

A School sells bumper sticks and magnets for parents to put on their cars. Stickers cost $3, and magnets cost $8. This week 30 items were sold for a total of $140. How many stickers were sold? How...

A boat traveled 336 miles downstream and back. The trip downstream took 12 hours. The trip back took 14 hours. What is the speed of the boat in still water? What is the speed of the current?

There are 4 times as many students as teachers on a trip. There are a total of 80 people. How many are students? Solve using system of equations by substitution or elimination....

Question is : Margie is responsible for buting a weeks supply of food and medication and a shelter. The food and medication for each dog costs twice as much as those supply's for a cat. She needs...

please help me i an struggling in math alot may you please help me on this equation

You and your nine friends have decided to take a few days to go camping. You are planning a recreational budget of $50 per day for activities. One day your group is consis the nearby amusement park...

Pam’s age plus Tom’s age is 65. Twice Pam’s age is equal to 130 minus twice Tom’s age. How old are they?

i just dont understand.

You and your nine friends have decided to take a few days to go camping. You are planning a recreational budget of $50 per day for activities. One day your group is consis the nearby amusement park...

Can someone please answer this for me Help me understand this.

Last year, one savings account paid 3% interest and the other account paid 6.5% interest. If she earned $116.25 in interest for the year, how was her money divided between the two accounts...

I bought some dogs and octopi. Each dog costs $100 and each octopus cost $200. I paid a total of $2000 and got a total of 80 legs. How many of each did I get? Please show w...

The return trip against the wind took 5 hours. Find the rate of the plane in calm air and the rate of the wind.

word problem

3x-2y=-1,3x+y=5

I need to set up a system of equations but whenever I solve the equation I get a totally unreasonable answer. Which is counted as wrong.

i need help finding systems of equations for this problem please help

I need help I don't really get it. I would like to know the answer.

In electronics, circuit gain is modeled by G = Bt/R + Rt ; where R is the value of a resistor, t is the temperature, Rt is the value of R at temperature t, and B is constant. The sensitivity of...

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