$cos(247.5 deg)=cos( \frac{495deg}{2})
 = - \sqrt{ \frac{1+cos(495deg)}{2} } 
 = -\sqrt{ \frac{1- \frac{ \sqrt{2} }{2} }{2} } 
 = \frac{ \sqrt{2- \sqrt{2} } }{2}$

8 0

3 years ago

Four times a number<br> increased by five

Ratling [72]

Answer:

y x 4 + 5

Step-by-step explanation:

7 0

3 years ago

Complete the function for this graph.

ikadub [295]

Answer:

y = –|x - 1| + 3

Step-by-step explanation:

The "vertex" is (1 , 3)

y = –|x - 1| + 3

7 0

3 years ago

there are four consecutive even numbers. The second number is represented by x. find the sum of four numbers in term of x

Fittoniya [83]

Answer:

Sum of the four numbers in terms of x would be 4x+4

Step-by-step explanation:

x-2 + x + x+2 + x+4 = sum

4x+4 = sum

5 0

3 years ago