Geometry help please!! 20 points

Mathematics

1 answer:

vekshin12 years ago

6 0

Answer:

Step-by-step explanation:

Opposite angles of a cyclic quadrilateral are supplementary, so (6x+72)+3x=180

$(6x+72)+3x=180\\9x+72=180\\9x=108\\x=12$

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BigorU [14]

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3 years ago

PLS HELPP! :) What is the radius with a circumference of 122 in?

Mumz [18]

Answer:

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and that's your answer

Step-by-step explanation:

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4 0

3 years ago

____ is the amount of a $3,000.00 annuity due at 12 percent compounded semiannually for 3 years

ANEK [815]

The formula of the present value of annuity due:
$PV=C*[\frac{1-(1+i)^{-n}}{i}]*(1+i)$

For your case:
C = $3000
i = 12% / 100 = 0.12
n = 3 * 2 = 6 (semiannually for 3 years means 6 payments)

So, the solution is:
$PV=3000*[\frac{1-(1+0.12)^{-6}}{0.12}]*(1+0.12)=3000*[\frac{1-0.5066}{0.12}]*1.12=$
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