470.Four-fifths of the people on a hike are children. If there are 12 children, what is the total number of people on the hike?
471.The sum of 13 and twice a number is −19. Find the number.
472.One number is 3 less than another number. Their sum is 65. Find the numbers.
473.Bonita has $2.95 in dimes and quarters in her pocket. If she has 5 more dimes than quarters, how many of each coin does she have?
474.At a concert, $1600 in tickets were sold. Adult tickets were $9 each and children’s tickets were $4 each. If the number of adult tickets was 30 fewer than twice the number of children’s tickets, how many of each kind were sold?
475.Find the complement of a 52° angle. 476.
The measure of one angle of a triangle is twice the measure of the smallest angle. The measure of the third angle is 14 more than the measure of the smallest angle. Find the measures of all three angles.
477.The perimeter of an equilateral triangle is 145 feet. Find the length of each side.
478.ΔABC is similar to ΔXYZ. Find the length of side c.
Find the length of the missing side. Round to the nearest tenth, if necessary.
480.Find the length of the missing side. Round to the nearest tenth, if necessary.
481.A baseball diamond is shaped like a square with sides 90 feet long. How far is it from home plate to second base, as shown?
The length of a rectangle is 2 feet more than five times the width. The perimeter is 40 feet. Find the dimensions of the rectangle.483.
A triangular poster has base 80 centimeters and height 55 centimeters. Find the area of the poster. 484.
A trapezoid has height 14 inches and bases 20 inches and 23 inches. Find the area of the trapezoid.485.
A circular pool has diameter 90 inches. What is its circumference? Round to the nearest tenth. 486.
Find the area of the shaded region. Round to the nearest tenth.
487.Find the volume of a rectangular room with width 12 feet, length 15 feet, and height 8 feet. 488.
A coffee can is shaped like a cylinder with height 7 inches and radius 5 inches. Find (a) the surface area and (b) the volume of the can. Round to the nearest tenth.
489.A traffic cone has height 75 centimeters. The radius of the base is 20 centimeters. Find the volume of the cone. Round to the nearest tenth. 490.Leon drove from his house in Cincinnati to his sister’s house in Cleveland. He drove at a uniform rate of 63 miles per hour and the trip took 4 hours. What was the distance?
491.The Catalina Express takes 112 hours to travel from Long Beach to Catalina Island, a distance of 22 miles. To the nearest tenth, what is the speed of the boat?
492.Use the formula I=Prt to solve for the principal, P, for:
493.Solve the formula A=12bh for h:
494.Solve x+5y=14 for y.