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3 years ago

Mhanifa can you please help? This is due asap!

Mathematics

1 answer:

sammy [17]3 years ago

7 0

Answer:

(2)

RSTV is a quadrilateral

Interior angles of a quadrilateral sum to 180

Sum of given angles:

2n + 6n + 2n + 5n = 180°
15n = 180°
n = 12°

The angles are:

2*12°= 24°, 6*12° = 72°, 2*12° = 24°, 5*12° = 60°

(3)

Sum of angles of a regular 18-gon:

S = 180°(18 - 2) = 2880°

Each interior angle is:

2880°/18 = 160°

(4)

Sum of interior angles of a convex heptagon (7-sided polygon):

S = 180°(7 - 2) = 900°

(5)

Sum of exterior angles of any polygon is 360°

Each exterior angle of a regular nonagon (9-sided polygon) is:

360°/9 = 40°

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musickatia [10]

Answer:

Kaitlin's account will have 72% of the money initially invested, that is, about $ 6,192.

Step-by-step explanation:

Given that last year Kaitlin opened an investment account with $ 8,600, and at the end of the year, the amount in the account had decreased by 28%, to determine the year-end amount in terms of the original amount both in whole numbers and in decimals, the following calculation must be performed:

100 - 28 = 72

8,600 x 0.72 = X

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Thus, Kaitlin's account will have 72% of the money initially invested, that is, about $ 6,192.

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3 years ago

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Daniel [21]

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Andreas93 [3]

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Step-by-step explanation:

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