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Archy [21]
3 years ago
6

Sally invests $5000 in an account earning 8% interest, compounded continuously. After how many years will she double her investm

ent? [Use the formla A = Pert and round answer to the nearest tenth.
Mathematics
2 answers:
Basile [38]3 years ago
8 0

Answer:

8.7 years

Step-by-step explanation:

8.7 years is correct. Plug in 10000 for A, divide both sides by 500, then take the natural logarithm of both sides to get ln(2) = .08t. Divide by .08 to get the answer.

juin [17]3 years ago
6 0
Double is double, so you can solve
.. 2 = 1*e^(.08t)
and get the correct value of t.

Taking logs,
.. ln(2) = .08t
.. ln(2)/.08 = t ≈ 8.7 . . . . years
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The second angle of a triangle is double the first angle. The third angle is 40 less than the first angle. Find the three angles
ArbitrLikvidat [17]

Answer:

Angle 1: 55

Angle 2: 110

Angle 3: 15

Step-by-step explanation:

Angle 1: x

Angle 2: 2x

Angle 3: x-40

The total degrees for all the angles in a triangle add up to 180, so we now have the equation x+2x+x-40=180. From here we solve to get 55 degrees for x, so angle 1 is 40 degrees, angle 2 is 110 (2 times 40) and the third angle is 15 (55-40).  

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3 years ago
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vova2212 [387]

Answer  

its b

Step-by-step explanation:

6 0
3 years ago
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sleet_krkn [62]

Answer:

Graph 4

Step-by-step explanation:

Parallel lines have no solution  to the system of equation.  Graph 4 is a set of parallel lines, so they will never intersect.

3 0
3 years ago
Thank you for your time
malfutka [58]

Answer:

m∠5= 130°

Explanation:

If lines A and B are parallel we can assume that the angles in the same locations are equal

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3 years ago
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Tamiku [17]

Answer:

A) 27

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C) 1/9

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