Tiffany collects perfume bottles. she has 99 bottles in her collection. 2/3 of her perfume bottles are made of Crystal. how many of the perfume bottles in Tiffany's collection are made of crystal?

0.00671 convert to scientific notation

0.5 of what number is 22?

a car travels at a speed of 80 km/h for 2½ hours from town P to town Q. Then the car increases its speed by 25% and maintains that speed for a further 150 km from town Q to town R. Calculate the average speed for the whole journey.

Thursday is ladies night at the slurp and burp bar and grill. all adult beverages are $ 1.25 for women and $ 2.50 for men. a total of 416 adult beverages were sold last thursday night. if the slurp and burp sold a total of $ 997.

What is 5 wholes plus 8/6 or 1 2/6

Which information is sufficient to show that a parallelogram is a rectangle? A. The diagonals bisect each other. B. The diagonals are congruent. C. The diagonals are congruent and perpendicular. D.

Solve for x. - 6>-30-4x

a truck traveled 8 hours at an average speed of 55 mph. how far did the truck travel? (distance = rate x time)

Darla drives at a constant speed of 45 miles per hour. a. If she drives for y miles and it takes her x hours, write the two-variable equation to represent the number of miles Darla can drive in x hours b.

Substitute x=5 and y = 7 for the algebraic expression 24x-3) + 6 (3y-5) and evaluate the expression