19,000 is invested in anaccount for 30 years. Find the value of the investment at the end of 30 years if the interest is 7% simp
le interest?
1 answer:
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Answer:
x = 22.5
Step-by-step explanation:
The tangent- secant angle x is half the difference of the measures of the intercepted arcs, that is
(4x + 5 - 50 ) = x ( multiply both sides by 2 )
4x - 45 = 2x ( subtract 2x from both sides )
2x - 45 = 0 ( add 45 to both sides )
2x = 45 ( divide both sides by 2 )
x = 22.5
Answer:
7 km
Step-by-step explanation:
Substitute:
The equation for area of a semi-circle is
A =
76.97 =
Multiply by 2 on both sides:
2(76.97) = ( )2
153.94 =
Divide by pi on both sides:
153.94 =
/pi /pi
49.03 ≈
Find the square root:
7 = r