HELPPPP:: solve the following equation for X: xy +3=z
2 answers:
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Answer:
1. 3
3. 10
Step-by-step explanation:
1. Write a proportion by writing each ratio as a fraction and setting the fractions equal. A proportion is an equation where two ratios are equal to each other. Then cross multiply denominator and numerator of each fraction to solve.
2. Repeat same process as #1.
3. The ratio of girls to boys is 3:2. There are 15 girls. write a proportion to solve using b as the number of boys.
There are 10 boys.