Please‼️help meMyanmar Grade7
1 answer:
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Start by setting the function equal to 0 and then moving the -5.4 over to the other side of the equals sign. 
. The first rule for completing the square is that the leading coefficient be a +1. Ours is a -.2. So we need to factor it out. 
. Now we will take half the linear term, square it, and add it to both sides. Our linear term is 14. Half of 14 is 7, and 7 squared is 49. So we add 49 in to the left side just fine, but we cannot forget about that -.2 hanging around out front as a multiplier. What we have actually "added" in is -.2*49 which is -9.8. Now here's what we have after all that: 
. In that process, we have created a perfect square binomial on the left. Along with expressing that binomial we will do the math on the right: 
. Now we will move the -4.4 back over by addition, and it will then be apparent as to what our vertex is. The y coordinate of the vertex will give us the max height of the water. 
. As you can see, our work matches choice C from above.
Open up the brackets
Collect like terms
Simplify
Therefore, your answer is 12.
Collect like terms
Simplify
Therefore, your answer is 12.
Answer:
Here's one way to do it.
Step-by-step explanation:
-24 ÷ (-4)
-24 is the final number on the number line
-4 means you count by 4s on the number line moving backwards.
- Start at 0 facing forward.
- Move backwards in steps of four units from 0 to -24.
- Count the number of steps you took (six).
Answer: +6 (The sign is + because you are still facing forward).
