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3 years ago

How do you do trigonometric Ratios

1 answer:

4 0

To calculate the sine of an angle, simply divide the length of the opposite side, 479.16, by the length of the hypotenuse, 610. To get the cosine, divide the length of the adjacent side, 377.5, by the length of the hypotenuse, 610.

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What are the solutions of the quadratic equation 49x2 = 9?

bagirrra123 [75]

Answer:x=+3/7 or x=-3/7

Step-by-step explanation:

49x^2=9

Divide both sides by 49

49x^2 ➗ 49=9 ➗ 49

x^2=9/49

Taking the square root of both sides we get

x=±√(9/49)

x=±(3/7)

x=+3/7 or x=-3/7

8 0

3 years ago

catering service offers 8 appetizers, 11 main courses, and 7 desserts. A banquet committee is to select 7 appetizers, 8 main

guapka [62]

Answer: The required number of ways is 46200.

Step-by-step explanation: Given that a catering service offers 8 appetizers, 11 main courses, and 7 desserts.

A banquet committee is to select 7 appetizers, 8 main courses, and 4 desserts.

We are to find the number of ways in which this can be done.

We know that

From n different things, we can choose r things at a time in $^nC_r$ ways.

So,

the number of ways in which 7 appetizers can be chosen from 8 appetizers is

$n_1=^8C_7=\dfrac{8!}{7!(8-7)!}=\dfrac{8\times7!}{7!\times1}=8,$

the number of ways in which 8 main courses can be chosen from 11 main courses is

$n_2=^{11}C_8=\dfrac{11!}{8!(11-8)!}=\dfrac{11\times10\times9\times8!}{8!\times3\times2\times1}=165$

and the number of ways in which 4 desserts can be chosen from 7 desserts is

$n_3=^7C_4=\dfrac{7!}{4!(7-4)!}=\dfrac{7\times6\times5\times4!}{4!\times3\times2\times1}=35.$

Therefore, the number of ways in which the banquet committee is to select 7 appetizers, 8 main courses, and 4 desserts is given by

$n=n_1\times n_2\times n_3=8\times165\times35=46200.$

Thus, the required number of ways is 46200.

7 0

4 years ago

What is the least number of party favors Madison should make

Tatiana [17]

The correct answer is b.24

3 0

3 years ago

Read 2 more answers

my dad is 40 miles away at work...if he leaves work at 6:24pm...and travels at an average of 43 miles per hour...what time is he

ExtremeBDS [4]

If his speed is 43 mph, then it takes him 40/43 of an hour to go 40 miles.

An hour = 60 minutes.

40/43 of 60 minutes = 55.8 minutes. He gets home 55.8 minutes after 6:24 PM.

3 0

4 years ago

Read 2 more answers

PLEASE HELP Im giving 31 points and brainliest!!

statuscvo [17]

Answer:

9676

Step-by-step explanation:

$2 x 21 x 82 + 38 x 82 +2 x \frac{38 x 82}{2} = 9676$

6 0

3 years ago

How do you do trigonometric Ratios​

How do you do trigonometric Ratios