Let say the number = x
double my number and add eight, I get my number plus twelve
double x and add eight, I get x plus twelve
2x + 8 = x + 12 (subtract x from each side)
2x - x + 8 = 12
x + 8 = 12 (subtract 8 from each side)
x = 12 - 8
x = 4
Your number is 4
Answer:
Conjecture : 2xy / ( x + y ) ≤ √xy
Step-by-step explanation:
Harmonic mean of x and y = 2xy/( x + y )
<u>Formulate a conjecture about their relative sizes </u>
we will achieve this by computing harmonic and geometric means
Geometric mean = √xy
harmonic mean = 2xy/( x + y )
Conjecture : 2xy / ( x + y ) ≤ √xy
attached below is the proof
Answer:
250 pi
Step-by-step explanation:
volume = 5^2 x pi x 10 = 250 pi
Your answer is C!
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<u>Given</u>:
Given that Brinson's family is going camping. Their tent is shaped like a rectangular pyramid.
The volume of the tent is 6000 cubic inches.
The area of the base of the tent is 1200 square inches.
We need to determine the height of the tent.
<u>Height of the tent:</u>
The height of the tent can be determined using the formula,

where B is the area of the base and h is the height of the pyramid.
Substituting V = 6000 and B = 1200, we get;



Thus, the height of the tent is 15 inches.