A man mowing his four-sided yard is unable to remember all of its dimensions. He remembers that one corner is 85°, another is 70°, and another is 105°. What is the measure of the fourth corner?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?