The answer is idk sorry:(
Answer:
Both the addition property of equality and the additive identity property
Step-by-step explanation:
we know that
The <u>addition property of equality</u> states that if the same amount is added to both sides of an equation, then the equality is still true
The <u>additive identity property</u> says that if you add a real number to zero or add zero to a real number, then you get the same real number back
we have

step 1
Applying the addition property of equality adds 3p both sides

step 2
Applying the additive identity property

step 3

step 4

The rule sometimes called the Empirical Rule, which means "based on observations" The graph is shown this way : (see attachment). This rule is represented by a<span><span>bout 68% of values fall within one standard deviation of the mean.</span>About 95% of the values fall within two standard deviations from the mean.<span>Almost all of the values — about 99.7% — fall within three standard deviations from the mean.</span></span>
Answer:
19y - 9
Step-by-step explanation:
- 3(- 4y + 3) + 7y ← multiply each term in the parenthesis by - 3
= 12y - 9 + 7y ← collect like terms
= 19y - 9