Solve for the variable.
x - 
x = 3
A. x = 90
B. x = -45
C. x = 45
D. x = -90
Answer: C
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Solve the problem.A square playground has a white line drawn through its diagonal. This creates two triangles whose angle measures are 45°, 45°, and 90°. If the sides of the playground are 53 feet, find the length, x, of the diagonal. Round to one decimal place if needed. 
A. 30.6 ft B. 75 ft C. 37.5 ft D. 91.8 ft
Perform the operation indicated.
÷ 
A. x + 9
B. 
C. 
D. 
Provide an appropriate response.The formula used to find the volume of the frustum of a square pyramid is 
where b is the length of the base, a is the length of the top, and h is the height. Calculate the volume if a = 283 feet , b = 680 feet , and h = 222 feet. 
A. 163,154,238 cubic feet B. 54,384,746 cubic feet C. 54,394,746 cubic feet D. 54,385,746 cubic feet
A solution contains 0.2 liters of sulfuric acid. If this represents 8% of the total amount, find the total amount.
A. 3 liters B. 3.5 liters C. 1.5 liters D. 5 liters E. 2.5 liters