Using proportions, it is found that she earned $943,000 from CD sales.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
The total amount involved in the sells and downloads are:
1.22 x 5 + 2.1 x 1 = 8.2 million.
She was paid 11.5% of that, hence:
0.115 x 8.2 = 0.943 million = $943,000.
She earned $943,000 from CD sales.
More can be learned about proportions at brainly.com/question/24372153
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Answer:
1,000,000,000 divided by 2
Step-by-step explanation:
if each is being multiplied by two, dividing this by two is the inverse operation.
The price after increase would be $598.80
Answer:
Option b. 
Step-by-step explanation:
step 1
In the right triangle ABC
<em>Find the sine of angle CAB</em>
---> the sine of angle CAB is equal to divide the opposite side angle CAB (BC) by the hypotenuse (AC)
substitute
simplify
---->equation A
step 2
In the right triangle BDC
<em>Find the sine of angle CBD</em>
---> the sine of angle CBD is equal to divide the opposite side angle CBD (DC) by the hypotenuse (BC)
substitute
----> equation B
step 3
we know that
If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent
In this problem
Triangles ABC and BDC are similar by AA Similarity Theorem
therefore
m∠CBD≅m∠CAB
equate equation A and equation B
solve for DC
step 4
Find the value of AD
substitute the values
