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My name is Ann [436]
3 years ago
5

Mary had $25,000 to invest. She invested part of that amount at 3% annual interest and part at 5% annual interest for one year.

The amount of interest she earned for both investments was $1100. How much was invested at each rate?
Mathematics
1 answer:
emmasim [6.3K]3 years ago
3 0
(25000-f)(.03)+.05f=1100

750-.03f+.05f=1100

750+.02f=1100

.02f=350

f=$17500

So Mary invested $17500 @ 5% and 7500 at 3% to earn $1100 in interest.


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Answer:

B

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Consider all options:

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Reflection across the x-axis preserves the congruence.

B. Transformation with the rule

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C. Transformation with the rule

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Translation 6 units to the right and 4 units down preserves the congruence.

D. Transformation with the rule

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Clockwise rotation by 90^{\circ} angle over the origin preserves the congruence.

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3 years ago
Confused!! consider the polar axes with the points plotted below. Write the coordinates of point A in polar form. Be sure to wri
irinina [24]

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4 years ago
In the first quadrant, you start at (8, 11)
Anestetic [448]

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8 0
3 years ago
the height of a cylinder is three times the diameter of the base . The surface area of thre ylinder is 126pi ft^2. What is thr r
Over [174]
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The surface area (SA) of a cylinder with radius r and height h is:
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We have:
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d = 2r
h = 3 * 2r = 6r

126π = π(2r² + 2rh)
126 = 2r² + 2rh
126 = 2r² + 2r * 6r
126 = 2r² + 12r²
126 = 14r²
r² = 126/14
r² = 9
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8 0
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