ACTIVITY 4 Direction: Answer the following questions.
1. In the equation 5 + x = 10, what property should be used to solve this
equation
2. What property of congruence is used in "aab, then boa"?
3. What property should be used to solve the equation 3x = 122
4. What property should be used to solve the equation 152
5. If 3x - 5 = 7 ond x = 4, then 314) - 5=7. What property is being ilustrated?​

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups