Response:
To determine this, use 3.
Step-by-step analysis:
Area = 1/2 * base * height * sin(angle)
= 1/2 * (13.1) * (8.7) * sin(29.17)
To find the angle of rotational symmetry for a regular polygon, we use the formula: degrees of rotation = 360° divided by the number of sides. In this scenario, we used n = 5, given that a pentagon has five sides.
The calculation for the angle of rotation is: degrees of rotation = 360° / 5
Thus, degrees of rotation = 72°
72° is the correct choice among the options.
One equation is Y - 11 = -7/2(x + 3), while the other is y + 3 = -7/2(x - 1).
There are 5 black keys for each 7 white keys. Hence, the ratio stands at 5:7. To determine how many black keys correspond to 49 white keys, we calculate the scaling factor for the ratio: 49 divided by 7 equals 7. Thus, the original ratio is scaled by 7. Therefore, the total number of black keys equals 5 multiplied by this scaling factor, resulting in 35 black keys.
