Given: ∆afd, m ∠f = 90° ad = 14, m ∠d = 30° find: area of ∆afd

Step-by-step explanation:

This is a 30-60-90 triangle.  The sides of this triangle can be represented as t (across from the 30° angle since it is the smallest side), 2t (across from the 90° angle since it is the largest side), and t√3 (across from the 60° angle).

Since F is the right angle, this means that AD is across from F and is the hypotenuse.  The hypotenuse of a right triangle is the longest side; this means that 2t = 14, so t = 7.  This also tells us that t√3 = 7√3.

This means that the height and base of the triangle are 7 and 7√3.  Using the formula for the area of a triangle, we have

A = 1/2bh = 1/2(7)(7√3) = 1/2(49√3)

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.

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step-by-step explanation: