D. <span>Colby and Sarah sold newspapers this past summer. Colby earned $4.50 for each newspaper he sold. Sarah's earnings were $35 less than Colby's at the end of the summer. The following expression shows Sarah's earnings:
4.50y − 35</span>
Given:
The ratio is
.
To find:
Inverse tangent of the given ratio.
Solution:
We know that,
Inverse tangent of the ratio
= 
= 
Using scientific or graphing calculator, we get
Inverse tangent of the ratio
= 
Round to the nearest degree
Inverse tangent of the ratio 
Therefore, the correct option is C.
I would assume that he's using a 90° rotation.
Answer:
= 7/13
Step-by-step explanation:
Total number of balls in the bag is
4+6+3 =13
13 - 6 will be used to calculate how many of the balls are not white and only 7 are NOT white therefore, the probability will be
7/13 7 non white balls/13 balls in total