JY CHEN - Ask Anything, Learn Everything. Logo

Questions in mathematics

[Free] Solve the system using the combination method to find the solution \((x, y)\). \[ 4x + 7y = 10 \] \[ -4x - 6y = 28 \]

[Free] Write an algebraic expression for "3 less than the quotient of 20 and x."

[Free] A student writes [tex]$5y \cdot 3$[/tex] to model the relationship of the sum of [tex]$5y$[/tex] and [tex]$3$[/tex]. Explain the error.

[Free] Jessica is getting ready for college. She needs to have an overall grade of 85 in her Math class to qualify for the college that she wishes to attend. Her math grade is based solely on her scores on 6 exams. On the first 5 exams, her scores were 87, 81, 85, 90, and 78. Write an inequality that represents her predicament. What score does she need to get on her last test to qualify?

[Free] Define a variable, write an equation, and solve for the number. Nine fewer than half a number is five more than four times the number.

[Free] What is the degree of the polynomial that generates the given points? x: -6 -2 0 2 6 y: -726 -34 0 18 582

[Free] **The Beach Puzzle** At the beach, 3 kids had a lovely day out. They each saw a different sea creature, played a different game, and ate something different. Can you figure out which child saw which creature, played which game, and ate what item of food? **Children:** - Emily - Khoi - Dylan **Animals:** - Crab - Starfish - Shark **Games:** - Baseball - Football - Kite **Food:** - Hot Dog - Ice Cream - Lolly **Clues:** 1. Khoi did not play baseball, did not see a crab, and did not fly a kite. 2. The shark was seen by the child who flew a kite. 3. Dylan did not fly a kite but did eat a hot dog. 4. Emily either spotted a shark or ate ice cream. Solve the puzzle based on the clues provided.

[Free] How do you solve for [tex]y[/tex] in the equation [tex]2x + y = 4[/tex]?

[Free] How do you solve for [tex]y[/tex] in the equation [tex]2y = x + 3[/tex]?

[Free] Ethan bought 3 new baseballs. Bethany has three times as many baseballs as Ethan now has. Let [tex]x[/tex] represent the number of baseballs Ethan had before he bought any new ones. Together, they now have 44 baseballs. A. Write an equation to represent the situation. B. How many baseballs did Ethan have before he bought any new ones?