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mamaluj [8]
3 years ago
5

Please help! Will give brainliest! Trig ratio!

Mathematics
1 answer:
DiKsa [7]3 years ago
4 0
Good question!

First of all, you need to be aware of the following trigonometrical ratios\functions:

For angle A:

adjacent=12
opposite=35
hypotenuse=37

Hence:
cos(A)= \frac{12}{37} 
\\~\\
sin(A)= \frac{35}{37} 
\\~\\
tan(A)= \frac{35}{12}

I hope that helps!



I am with you if you faced any difficulties!


 


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Kevin and randy muise have a jar containing 87 ​coins, all of which are either quarters or nickels. the total value of the coins
boyakko [2]
Let x be the amount of nickels and y be the amount of quarters in a jar. Totally there are 87 coins, then x+y=87.

Since nickel is 5 cent coin and quarter is 25 cent coin, then 5x+25y=1255 ($12.55=1255 cents). Solve this system:x=87-y and 5(87-y)+25y=1255.
435-5y+25y=1255,
25y-5y=1255-435,

20y=820,
y=820÷20,
y=41,
x=87-41=46.
Answer: 46 nickels and 41 quarters.

4 0
3 years ago
2x – 1 = y + 4<br>3y +1 = 3х – 2​
ehidna [41]

Answer:x=4 y=3

Step-by-step explanation:

Let's solve your system by substitution.

2x−1=y+4;3y+1=3x−2

Step: Solve2x−1=y+4for y:

2x−1=y+4

2x−1+−y=y+4+−y(Add -y to both sides)

2x−y−1=4

2x−y−1+−2x=4+−2x(Add -2x to both sides)

−y−1=−2x+4

−y−1+1=−2x+4+1(Add 1 to both sides)

−y=−2x+5

−y

−1

=

−2x+5

−1

(Divide both sides by -1)

y=2x−5

Step: Substitute2x−5foryin3y+1=3x−2:

3y+1=3x−2

3(2x−5)+1=3x−2

6x−14=3x−2(Simplify both sides of the equation)

6x−14+−3x=3x−2+−3x(Add -3x to both sides)

3x−14=−2

3x−14+14=−2+14(Add 14 to both sides)

3x=12

3x

3

=

12

3

(Divide both sides by 3)

x=4

Step: Substitute4forxiny=2x−5:

y=2x−5

y=(2)(4)−5

y=3(Simplify both sides of the equation)

3 0
2 years ago
What numtber should the fraction 15/3 be mutiplied by in order to equal 1?
anzhelika [568]

Answer:1/5

Step-by-step explanation:

The fraction 15/3 equals 5.

15 ÷ 3 = 5

So, what number when multiplied by 5 equals 1?

1/5

Step-by-step explanation:

3 0
2 years ago
A checking account was overdrawn by $7
mojhsa [17]

Answer:

7 x 4 = 28 or $28

Step-by-step explanation:

6 0
2 years ago
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3/4 x - 21 = 10/4 x + 7/2
vodomira [7]

Answer:  x=-14

Step-by-step explanation:

8 0
3 years ago
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