Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. An obtuse triangle has at least two obtuse angles.
2. All regular quadrilaterals have four lines of symmetry.
3. All regular polygons tessellate the plane.
4. The parallel sides in a trapezoid are called the legs of the trapezoid.
5. Regular polygons are polygons with all sides congruent and all angles congruent.
1. F: Two obtuse angles would sum to greater than 180°.
2. T
3. F: Only regular triangles, squares and regular hexagons.
4. F—The parallel sides are called bases.
5. T
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Solve.The sum of the squares of the digits of a positive two-digit number is 61, and the tens digit is 1 more than the units digit. Find the number.
A. 45 B. 65 C. 56 D. 54
Provide an appropriate response.(a) Translate into symbols. Angle x measures 15° more than angle y.(b) Find the measure of ?y if the measure of ?x = 106°.
A. (a) ?x = ?y + 15° (b) 91° B. (a) ?x = ?y + 15° (b) 121° C. (a) ?y = ?x + 15° (b) 7° D. (a) ?y = ?x + 15° (b) 91°
Solve the problem. Round to the nearest cent.The Elegant Lamp Company's net income last year was $2,930,000. It decided to distribute 20% of this money to shareholders. Find the dividend per share if there were 21,000 shares of $180 par value, 11% preferred stock and 232,000 shares of common stock outstanding.
A. Preferred: $19.80 Common: $10.84 B. Preferred: $15.35 Common: $11.24 C. Preferred: $3.07 Common: $2.25 D. Preferred: $19.80 Common: $0.73
Solve the problem.A city is growing at the rate of 0.3% annually. If there were 2,520,000 residents in the city in 1993, find how many (to the nearest ten-thousand) are living in that city in 2000. Use 
.
A. 2,600,000 B. 140,000 C. 6,800,000 D. 2,570,000