Decide whether the set is countably infinite.  Answer yes or no.
?
Set of even numbers.

What will be an ideal response?


yes

Mathematics

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Provide an appropriate response.Solve using a system of equations with two unknowns:A drafting company charges different prices for preliminary and detailed blueprints of houses. One week they completed 8 preliminary drawings and 12 detailed ones and earned $14,000. The second week they completed 4 preliminaries and 15 detailed and earned $15,100. How much did they charge for each preliminary and each detailed blueprint?

Fill in the blank(s) with the appropriate word(s).

Mathematics

Find the vertex and axis of symmetry of the graph of the function.f(x) = -2x2 + 4x - 9

A. (-2, -25) ; x = -2 B. (1, -7) ; x = 1 C. (2, -13) ; x = 2 D. (-1, -15) ; x = -1

Mathematics

Each of six decorators has to paint a room (walls only) and put a wallpaper border around the room at the ceiling. One gallon of paint covers 400 sq ft, and one roll of border contains five yards. Each decorator has one gallon of paint and three rolls of border.The list gives the name of each decorator and the size of the room.  Give the names of the decorators who will not have enough paint, but will have enough border for their rooms. (Assume a ceiling height of 8' for each room.)

A. {Sue, John} B. {Yong Sun, Sergey} C. {Juanita, Pedro} D. None

Mathematics

Solve and, when appropriate, round the answer to the nearest tenth.The distance d in miles that can be seen on the surface of the ocean is given by  where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 10.5 miles?

A. 165.5 ft B. 110.3 ft C. 70 ft D. 49 ft

Mathematics