3,398 Answered Questions for the topic College Algebra

#### what pressure does this produce on the air in the pump?

A bicycle tire pump has a piston with area 0.45 in2. If a person exerts a force of 16 lb on the piston while inflating a tire, what pressure does this produce on the air in the pump?

College Algebra Applications Of System Of Equations

11/15/20

#### Can someone help with this question pls

The nut shack sells hazelnuts for $6.50 per pound and peanuts nuts for $5.20 per pound. How much of each type should be used to make a 38 pound mixture that sells for $5.82 per pound?

College Algebra

11/15/20

#### How many ounces of each solution should she use?

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 70% salt and Solution B is 95% salt. She wants to obtain 50 ounces...
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College Algebra

11/15/20

#### solving a percent mixture using a system of linear equations

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 70% salt and Solution B is 95% salt. She wants to obtain 50 ounces...
more

College Algebra

11/15/20

#### word problem to solve

The combined cost of one advance ticket and one same-day ticket is $75. For one performance, 35 advance tickets and 30 same-day tickets were sold. The total amount paid for the tickets...
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#### What force had to act on that end?

In the figure, the rock weighs 225 lb and is lifted 1 ft by the lever.(a) How much work is done?(b) The other end of the lever is pushed down 3 ft while lifting the rock. What force had to act on...
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#### how fast (in m/s) is the tool going just before it hits the ground?

A worker at the top of a 551-m-tall television transmitting tower accidentally drops a heavy tool. If air resistance is negligible, how fast (in m/s) is the tool going just before it hits the ground?

#### How high (in m) will the swing be at the high point?

A child on a swing has a speed of 3.7 m/s at the low point of the arc.How high (in m) will the swing be at the high point?

#### What is its speed when it hits the ground?

A student drops a water balloon out of a dorm window 11 m above the ground. What is its speed when it hits the ground?

#### how fast are the divers going when they hit the water?

The cliff divers at Acapulco, Mexico, jump off a cliff 25.2 m above the ocean. Ignoring air resistance, how fast are the divers going when they hit the water?

#### Exponential and Logarithmic Models

An object with initial temperature 200∘F is submerged in large tank of water whose temperature is 50∘F. Find a formula for F(t), the temperature of the object after t minutes, if the cooling...
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#### What is Newton's 3 laws of motion?

What is Newton's 3 laws of motion?Month 11, Day 14For a mass having the weight equal to the Day recorded in 2 (For the example given, 15kg) find the weight of the mass by using the formula F=W=mg...
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#### Write a function that models the new path of the water

You are watering a garden. The height h (in feet) of water spraying from the garden hose can be modeled by h(x)=-0.2x^2+0.2x+1.2 , where x is the horizontal distance (in feet) from where you are...
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College Algebra System Of Equations

11/14/20

#### Can anyone help on this question?

A farmer saw some chickens and pigs in a field. He counted 26 heads and 80 legs. Determine exactly how many chickens and pigs he saw.

College Algebra System Of Equations

11/14/20

#### Can anyone help on this question?

The admission fee at an amusement park is $5.50 for children and $15.00 for adults. On a certain day, 303 people entered the park, and the admission fees collected totaled $2,949.00. How many...
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#### What is Newton's 3 laws of motion?

What is Newton's 3 laws of motion?Month 11, Day 14For a mass having the weight equal to the Day recorded in 2 (For the example given, 15kg) find the weight of the mass by using the formula F=W=mg...
more

#### How much work is done?

In the figure, the rock weighs 225 lb and is lifted 1 ft by the lever.How much work is done?The other end of the lever is pushed down 3 ft while lifting the rock. What force had to act on that end?

#### how much work (in J) does the driver do?

A motorist runs out of gas on a level road 220 m from a gas station. The driver pushes the 1,220 kg car to the gas station. If a 160 N force is required to keep the car moving, how much work (in J)...
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#### Find the ratio of their speeds immediately afterward.

Two persons on ice skates stand face to face and then push each other away (see figure below). Their masses are 70 and 90 kg.Find the ratio of their speeds immediately afterward.

#### How much energy (in J) is stored in the spring under this circumstance?

A 38 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals 9,300 N/m.How much energy (in J) is stored in the spring under this circumstance?

#### How high (in m) will the swing be at the high point?

A child on a swing has a speed of 3.7 m/s at the low point of the arc.

#### how fast are the divers going when they hit the water?

The cliff divers at Acapulco, Mexico, jump off a cliff 25.2 m above the ocean. Ignoring air resistance, how fast are the divers going when they hit the water?

#### What is their kinetic energy?

A bicycle and rider going 14 m/s approach a hill. Their total mass is 57 kg.(a) What is their kinetic energy?(b) If the rider coasts up the hill without pedaling, how high above its starting level...
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#### What is the minimum speed that a thrown ball would need to just reach the ceiling?

The ceiling of an arena is 38 m above the floor. What is the minimum speed that a thrown ball would need to just reach the ceiling?

#### How fast must the tackle be going before the collision for their speed afterward to be zero?

A running back with a mass of 96 kg and a speed of 7 m/s collides with, and is held by, a 144-kg defensive tackle going in the opposite direction. How fast must the tackle be going before the...
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