Answer: last one i’m pretty sure
Step-by-step explanation:
Simplifying the expression gives 0 = 6
<h3>What are algebraic expressions?</h3>
An algebraic expression is defined as an expression made up of variables and constants, with algebraic operations like addition, subtraction, and division.
Given the expression;
1/2 (x + 4) = 1/2x + 1

cross multiply
2(x + 1) = 2(x+ 4)
Expand the bracket
2x + 2= 2x + 8
collect like terms
2x - 2x = 8 - 2
0 = 6
Thus, simplifying the expression gives 0 = 6
Learn more about algebraic expressions here:
brainly.com/question/4344214
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For question 11, you essentially need to find when h(t) = 0, since that is when the height of the ball reaches 0 (ie touches the ground).
For question 12, it is asking for a maximum height, so you need to find when dh/dt = 0 and taking the second derivative to prove that there is maximum at t. That will find you the time at which the ball will hit a maximum height.
Rinse and repeat question 12 for question 13
Answer:
C
Step-by-step explanation:
(a^2+b^2)^2=a^2+b^2