Find the LCM of 42 and 49

In 10 minutes, a conveyor belt moves 300 pounds of recyclable aluminum from the delivery truck to a storage area. A smaller belt moves the same quantity of cans the same distance in 30 minutes.

What are the solutions to 2x^2+7x=4?

Write an inequality to represent the following description: "David and his 2 friends have $220 to spend at the fair. It cost them $5 each to get in and together they spend $30 for lunch.

In a study, the sample is chosen by writing everyones name on a playing card, shuffling the deck, then choosing the top 20 cardsWhat is the sampling method?

The function $f$ satisfies / [f (x) + f (2x + y) + 5 x y = f (3x - y) + 2x^2 + 1/]for all real numbers $x$, $y$. determine the value of $f (10) $.

Ashley and a friend have dinner at Red Lobster. Ashley's meal costs $15.85 and she leaves an 18% tip. Her friend's meal costs $14.30 and he leaves a 20% tip. How much did each one spend on their meal?

3+y-9=36 I need to find the value of y

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 520 and a standard deviation of 180. The grading process of this year's exam has just begun.

Is the ratio 5:6 equivalent to 3:4

a pool is the shape of a rectangle has a perimeter of 80 feet. The pool is 8 feet less wide than it is long. Find the length and width of the pool.