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Sophie [7]
3 years ago
9

PLS TELL ME HOW THIS TRICK WORKED!! I HAVE TO SUBMIT KT SOON!

Mathematics
2 answers:
madreJ [45]3 years ago
8 0

Answer:

x=2

Step-by-step explanation:

let the unknown number be x

now we are to find x regarding the question as an equation, let's form the equation to solve for x

the interpretation of the question is:

(x² + x)/3 = x

by collecting the like terms:

(x²+ x) = 3x

x² + x = 3x

x² = 3x - x

x² = 2x

x = 2

mars1129 [50]3 years ago
8 0

Answer:

The number you thought to start with, X

Step-by-step explanation:

Magician's secret:

Step 1: Let the original number you thought of be X

Step 2: 2 × x = 2X

Step 3: 2X + X = 3X

Step 4: 3X/3

》X

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Valerie, a member of the track team, runs 100 yards in 12 seconds. How fast is she moving in feet per minute?
Alchen [17]

Answer:

1500ft

Step-by-step explanation:

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A random sample of of 100 voters in a town is selected, and 24 are found to support an annexation suit. Find the 96% confidence
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Answer: 0.24 +/- 0.088 = (0.152, 0.328)

Step-by-step explanation:

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p= 24/ 100 = 0.24

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The solution for the given confidence interval is derived using the equation

p +/- z√(pq/n)

Where p = 0.24 q= 1-p = 0.76, n=100 z= 2.05

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