A geologist working for a mining company has collected rock and soil samples to take back to a laboratory for analysis. There are 34 samples, which are packed into a drum. The drum itself weighs 90...

A geologist working for a mining company has collected rock and soil samples to take back to a laboratory for analysis. There are 34 samples, which are packed into a drum. The drum itself weighs 90...

Members of a student government plan to have a movie night To raise money. The members want to know what type of movie the students at the school prefer. There are 1,250 students At the middle school...

A superhero is rendered powerless when exposed to 55 or more grams of a certain element. A 350 year old rock that originally contained 650 grams of this element was recently stolen from a rock museum...

help me get this problem right

A family has an annual income of $30,600. Of this, 1/4 is spent for food, 1/5 for housing, 1/10 for clothing, 1/9, for savings, 1/4 for taxes, and the rest for other expenses. How much is spent for...

Jenny, Joanna, and Paul go to the movies the cost for all their tickets is $25.50 and Jenny pays for $20 and Joanna gives another $20 to pay for her ticket and the rest of the cost. They get $14 back...

A nursing student has seven different patients assigned to her. How many different ways can she see each one exactly once in the same day?

a distance from tree the angle of elevation is 44 degrees to the top of tree. moves 70m away angle of elevation to top of tree is 25 degrees. Height of tree?

Jeff earns $4.00 an hour baby-sitting. He is saving to buy a pair of in-line skates that costs $116.00. If Jeff already has $60.00 saved, how many hours must he baby-sit in order to buy the skate...

Jen Butler has been pricing? Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 105.Two adults and three children must pay $ 74.Find the price of the...

Player A led a baseball league in runs batted in for the 2007 regular season. Player? B, who came in second to player? A, had 14 fewer runs batted in for the 2007 regular season.? Together, these...

A first number plus twice a second number is 7. Twice the first number plus the second totals 5. Find the numbers.

Keiko has a total of ?$6100, which she has invested in two accounts. The larger account is ?$800 greater than the smaller account. x+y=6100 x=800-y x+y=800 x=6100-y x+y=6100 x=y+800...

Kayla and Mario are playing with a football at the park on a windy day. Mark throws the football straight up in the air, and a gust of wind blows it 10 feet west and 4 feet south from Mark.If |x over...

A rectangular shipping crate is in the form of a cube. The width is decreased by 2 m while the length is increased by 2m and the height is increased by 3 m. The new crate has a volume of 168...

The number of grams of radioactive cesium that remain after t years from an original sample of 30 g is given by N(t) = 30(2–0.0322t). Using a graphing calculator, graph N and determine in how may...

I need to figure out all three sides

If Dr. I.M. Smart mixes 50ml of a 20% acid in water solution with 30ml of acid, what is the quantity and concentration of the final solution?

Two Ferris wheels are rotating side by side at the Math Fair. The first Ferris wheel has a radius of 7m and makes one complete revolution every 16s. The bottom of the wheel is 1.5m above the ground...

Multiplying a number n by the reciprocal of 3 is the same as x/3, and all integers divided by zero equal zero