1,975 Answered Questions for the topic linear algebra

Linear Algebra

04/02/20

Diana has already spent 600 minutes on the phone.

She expects to spend 2 more minutes with every phone call she routes. In all, how many phone calls does Diana have to route to spend a total of 772 minutes on the phone?

04/01/20

College Algebra Linear functions Help Please

A farmer is going to divide her 60 acre farm between two crops. Seed for crop A costs $25 per acre. Seed for crop B costs $50 per acre. The farmer can spend at most $2750 on seed. If crop B brings... more
Linear Algebra Math

03/30/20

Which of the following sets are subspaces of r3

Can somebody please help me with this question, I've tried using these steps 1) {(0,0,0)} 2) Line through the origin. 3) Plane through the origin. but I must have done something wrong. thank you... more
Linear Algebra Algebra 1 Algebra 2 Prealgebra

03/29/20

The line through ( − 9 , 3 ) and ( 6 , − 7 ) also goes through the point ( t , − 2 ) for

The line through (−9,3) and (6,−7) also goes through the point (t,−2) for T=
Linear Algebra Algebra 1 Linear Equations

03/28/20

Linear Equation Help

Margaret purchased a new bar of soap. Three days after she originally used the soap, she was curious how much soap per day she was using. She decided to weigh her soap and found that the bar was... more
Linear Algebra Math Algebra 1 Algebra 2

03/28/20

i’m not so sure if i can do this problem.

George’s car has a 20 gallon gas tank. travel 22 miles per gallon. If M is the number of miles driven since the last fill up, he can use this formula to find out how much gas is left in the gas... more
Linear Algebra Math Algebra 1 Algebra 2

03/28/20

Kathy has a more cycle with a 4 gallon gas tank. On average, she can travel 60 miles per gallon.

if M yes the number of miles driven since the last fill up, what formula can she use to find out how much gas is in left in the gas tank. how did you decide how to use or not use the value for in... more
Linear Algebra Math Algebra 1 Algebra 2

03/28/20

Susan has a piggy bank into which she puts only nickels. The amount of money in dollars D in the bank is given by D = n/20, where n is the number of nickels in the piggy bank.

if Susan has 80 nickels in her piggy bank how many dollars does she have.if Susan has 94 Nichols in her piggy bank, how many dollars does she have. Based on your answers to parts A & B explain... more
Linear Algebra

03/27/20

systems of linear equations

Two pools are being filled with water. To start, the first pool contains 1900 liters of water and the second pool contains 1645liters of water. Water is being added to the first pool at a rate... more
Linear Algebra Math Algebra 1 Algebra 2

03/27/20

The car is stopped at a red light. When the light turns green, the car begins moving forward. The distance in feet of the car from the light after t seconds is given by the equation D = 4t ^ 2

how far is the car from the light after 5 seconds. how far is the car from the light after 10 seconds.how far is the car from the light at t = 0 seconds explain.
Linear Algebra Math Algebra 1 Algebra 2

03/27/20

i’m having trouble with this problem that i found on the internet.

When Michael and his 3 friends go to the movies, they each either skate to the theater or ride a bike. The number of wheels in the group as they go to the theater is given by the equation W = 8s +... more
Linear Algebra

03/27/20

There are b boys in a class. This is three more than four times the number of girls. How many girls are in the class

There are b boys in a class . This is three more than four times the number of girls. How many girls are in the class
Linear Algebra Math Algebra 1 Algebra 2

03/26/20

alex’s can Company charges $1.00 plus an additional $3.00 per mile for a ride. madeleine’s company charges $3.00 plus an additional $2.00 per mile for a ride.

write a system of linear equations that show the cost in dollars, Y, for a cab ride of X miles for each driver. at what distance, in miles, will the cost be the same for both companies?

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