20% because 9 divided by 45 is 0.2 which is 20%
8.75$ you would divide 12.50 by 10 and get 1.25 and then multiply that by 7 which would equal 8.75$
If the angles of measures of angles X, Y, and Z are neither law of sine and cosine can be used to solve the triangle.
<h3>What is the law of
cosines and sines?</h3>
The law of cosines can be used to determine the measures of the triangle if the angles are known. The law is given by:
a² = b² + c² - 2bc*cosA
a,b,c are the sides and A, B, C are the angles.
The law of sines are used to determine the measures of the triangle if the angles are known. The law is given by:
a/sinA = b/sinB = c/sinC
If the angles of measures of angles X, Y, and Z are neither law of sine and cosine can be used to solve the triangle.
Find out more on cosines and sines at: brainly.com/question/25830682
is there a pic? so that we can help you more effectively/