Systems of linear equations

Talk and Text Plan A charges five cents a minutes and twenty dollars for 250 texts. Talk and Text Plan B charges ten cents a minute (first 100 minutes free) and fifteen dollars for 200 texts. Which... more

Two numbers differ by 5. four times the smaller number is 5 lesss than three times the larger. Find the numbers

Sarah prepared 10 gift boxes for a class party. She packed x gift boxesof magnets and y gift boxes of keychains. A gift box of magnets weighed2 pounds while a gift box of keychains weighed 3... more

The temperature changes of two calorimeters were monitored and recorded Calorimeter A contained 250 milliliters of water with an initial water temperature of 120°F After 10 minutes, the temperature... more

Find the distance traveled when the train was traveling at 50 per hour.

Find all the solutions to the following linear system:y/x + 2x/y = 6/xyx2 + y2 = 5

Let t ∈ R and consider the linear system described by the following augment matrix: A = [ 1 -1 | 0 ] [ 1 1 | 1 ] [ 0 1 | t ] For which values t does this system have:(i) no solutions(ii)... more

Determine which of the following statements are true and which are false. (a) The equation 4x − sin(1)y + 2z = 3√5 is linear.(b) The equation xy + 4z = 4 is linear. (c) If a system of linear... more

Hello my name is Garrett and i wanted to ask you about this question Ms. Wade was offered two different sales jobs. For the first job, she would earn a base salary of $500 per week plus a 6% sales... more

A music festival sold two types of tickets, day passes and weekend passes. The day passes were $137, and the weekend pass was $150. The total ticket sales for the festival were $484,608. They sold... more

the lesson sheet they gave us shows the short side of the rectangle as (3x-3)cm and the long side as 6 cm however in class they did not specify on how we must write a linear equation using this... more

What are the maximum & minimum values for f(x, y) = 3x - 2y using the given system of inequalities?3x + 4y ≥ -82y - 5x ≥ -4y ≤ 4

Three varieties of coffee --- Coffee A, Coffee B, and Coffee C ---- are combined and roasted, yielding a 55-lb batch of coffee beans. Twice as many pounds of Coffee C, which retails for $9.95 per... more

A sparkling water distributor wants to make up 200 gal of sparkling water to sell for $5.00 per gallon. She wishes to mix three grades of water selling for $10.00, $1.00, and $4.50 per gallon,... more

Which ordered pair is the solution to the system of equations? A.(8, 1) B.(−12, 2) C.(−4, −8) D.(4, −2)

Which ordered pair is the solution to the system of equations? A.(2, 2) B.(1, −7) C.(−1, 5) D.(−2, 4)