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2 years ago

I don't remember how to do this

Mathematics

1 answer:

denpristay [2]2 years ago

6 0

Answer:

b i think?

Step-by-step explanation:

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A circle has a radius of 4 meters and a central angle AOB that measures 120°. What is the length of the intercepted arc AB? Use

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120 degs --> 1/3 of the circumference :) hope i helped!

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2 years ago

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2. Simplify: b. 3(2x + 4y)

Nutka1998 [239]

Answer:

(6x+12y)

Step-by-step explanation:

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The height of a trapezoid can be expressed as x – 4, while the bases can be expressed as x + 4 and x + 9. if the area of the tra

AlexFokin [52]

Answer: 19 cm

Step-by-step explanation:

$A_{trapezoid}=\frac{b_{1}+b_{2}}{2}*h$

99 = $\frac{(x+4 + x+9}{2}*(x - 4)$

99 = $\frac{(2x + 13}{2}*(x - 4)$

198 = (2x + 13)(x - 4)

198 = 2x² + 5x - 52

0 = 2x² + 5x - 250

0 = 2x²- 20x + 25x - 250

0 = 2x(x - 10) + 25( x - 10)

0 = (2x + 25)(x - 10)

0 = 2x + 25 or 0 = x - 10

$-\frac{25}{2}$ = x or x = 10

Since length cannot be negative, $-\frac{25}{2}$ can be disregarded

Larger base: x + 9 = 10 + 9 = 19

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2 years ago

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I need help with all these problems and need to know is the ones I did correct

kolezko [41]

Isabelle has a leash for her dog in the backyard. The leash is attached to a post which allows thedog to travel in a circle around the post. The leash is 3 feet long. How much of the yard can thedog reach while on the leash?

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2 years ago

Pls Answer me I will mark as BRAIN LIST.

geniusboy [140]

Answer:

solution,

$a. \: 17 \: cos \: p = 8 \\ cos \: p = \frac{8}{17} \\ sec \: p = \frac{1}{cos \: p} \\ \: \: \: \: \: \: \: = \frac{17}{8} \\ \\ b. \: sin \: p = \sqrt{1 - ( \frac{8}{17}) ^{2} } \\ \: \: \: \: \: \: \: \: \: \: = \sqrt{1 - \frac{64}{289} } \\ \: \: \: \: \: \: \: \: = \sqrt{ \frac{1 \times 289 - 64}{289} } \\ \: \: \: \: \: \: \: \: \: = \sqrt{ \frac{225}{289} } \\ \: \: \: \: \: \: \: \: = \sqrt{ { \frac{15}{ {17}^{2} } }^{2} } \\ \: \: \: \: \: \: \: = \frac{15}{17}$

hope this helps...

Good luck on your assignment..

8 0

2 years ago