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Grace [21]
2 years ago
8

What is the area of the pentagon shown? 16 cm 15 cm 18 cm 20 cm 360 cm2 354 cm2 300 cm2 297 cm2​

Mathematics
1 answer:
nexus9112 [7]2 years ago
6 0
U need upload the image
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Find the exact value. cos150°
Aloiza [94]

ANSWER

\cos(150 \degree)  =    -  \frac{ \sqrt{3} }{2}

EXPLANATION

We want to find the exact value of cos(150°).

150° makes an angle of 30° with the positive direction of the x-axis and it is also in the second quadrant.

The cosine ratio is negative in the second quadrant.

Using the unit circle,

\cos(150 \degree)  =  - \cos(30 \degree) =   -  \frac{ \sqrt{3} }{2}

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3 years ago
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A sno-cone machine priced at $139 is on sale for 20% off. The sales tax rate is 6.75%. What is the price of the sno-cone machine
valkas [14]

Answer:

About $118.70

Step-by-step explanation:

139 x .2 = 27.8

139 - 27.8 = 111.2

111.2 x .0675 = 7.5

111.2 + 7.5 = 118.7

118.7 = $118.70

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3 years ago
Solve this inequality algebracially. |3-x|>10
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x < -7 or x > 13

Step-by-step explanation:

3 - x < -10 or 3 - x > 10

-x < -13      or    -x > 7

x > 13         or    x < -7

Answer: x < -7 or x > 13

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