The last one is correct answer
Here is one way to solve for x.
Step 1) 2x^2-7=9
Step 2) 2x^2-7+7=9+7
Step 3) 2x^2=16
Step 4) (2x^2)/2=16/2
Step 5) x^2=8
Step 6) sqrt(x^2)=sqrt(8)
Step 7) |x|=sqrt(8)
Step 8) x=sqrt(8) or x=-sqrt(8)
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Below are explanations/reasons to each of the steps above.
Step 1) Original equation
Step 2) Add 7 to both sides
Step 3) Combine like terms
Step 4) Divide both sides by 2
Step 5) Simplify
Step 6) Apply the square root to both sides. The notation "sqrt" is shorthand for "square root"
Step 7) Use the rule that sqrt(x^2) = |x| for all real numbers x
Step 8) Use the rule that if |x| = k then x = k or x = -k for some fixed number k.
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The two solutions are
x = sqrt(8) or x = -sqrt(8)
Answer:
$25.31
Step-by-step explanation:
If you multiply 33.75 by .75 you get your answer.
Answer:
550ft
Step-by-step explanation:
Simple napkin math, so you know what both shadows are you need to find how tall the High Roller is we will use X for this.
Im not 100% I set it up right but essentially 242 divided by 2'9" and that equals 88
Take 88 and multiply that by 6'3" and you get your Height for the High Roller
What I did their was I scaled the humans height to that of the High Roller dividing it gives you a number you can use to scale the height of that human to how it should scale to the High Roller, which is why I took 88 and multiplied it by the human's height.
Hope this helped :)
Answer: 3:1
Step-by-step explanation:
