〈 x8 - 8x8〉-2
〈 x8 - 8x8〉-2
〈-5i2-3÷ 6 - 4i13〉12〉-2
the area of the page of a book is 40 square inches, the area of the printed part is 21 7/8 square inches. the margin at the top and sides is 3/4 inch wide, the margin at the bottom is 1 inch wide...
a piece of cardboard is placed midway between two surfaces of light of equal intensity which are 12 feet apart. its plane is perpendicular to the line joining the two sources. how far must it be moved,...
if 5 is added to the numerator and to the denominator of a fraction and the result added to the original fraction the sum is 1 3/25. if 5 is subtracted from the numerator and the denominator of the...
in a two-place number the square of the digit in the ten's place is 2 less than the sum of the digits. if the digits are transposed the number is decreased by 45. what is the number?
the area of the page of a book is 40 square inches, the area of the printed part is 21 7/8 square inches. the margin at the top and sides is 3/4 inch wide, the margin at the bottom is 1 inch wide...
The total area of the surfaces of two cubes is 312 square inches, the total length of their edges is 120 inches. Find the length of the edges of each.
The hypotenuse of a right triangle is 13 inches. Its perimeter is 30 inches. Find the length of its hypotenuse.
Prove that if a positive number is separated into two factors whose product is a maximum, the factors must be equal.
two straight wires are attached at a point 24 feet above the base of a vertical pole standing on level ground. One wire is 5 feet longer than the other reaches a point on the ground 11 feet farther...
One ladder is 7 feet longer than another. Each is placed on level ground with its lower end 8 feet from the foot of a vertical wall. The longer ladder reaches 9 feet farther up the wall. How long...