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Triss [41]
3 years ago
7

Can someone please help me I've been stuck on this for so long​

Mathematics
2 answers:
Vilka [71]3 years ago
8 0

Answer:

x = -3, y=2

Step-by-step explanation:

x+3y =3

3y -2x =12

Solve the first equation for x

x = 3-3y

Substitute this into the second equation

3y -2(3-3y) =12

Distribute

3y -6 +6y =12

Combine like terms

9y -6 =12

Add 6 to each side

9y-6+6 =12+6

9y =18

Divide each side by 9

9y/9 =18/9

y = 2

Now find x

x = 3 -3y

x = 3-3(2)

x = 3-6

x = -3

Ne4ueva [31]3 years ago
6 0

Answer:

x = -3  y = 2

Step-by-step explanation:

x + 3y = 3

2x - 3y = -12

3x = -9

x = -3

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Can someone help me <br> 14. Determine the arc length. Give your answer to two decimal places.
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Answer:

19.48 m

Step-by-step explanation:

The formula that is used to find arc length is:

arc length = 2πr (\frac{angle}{360})

In this question, r = 9m and the angle (θ) = 124°. Substitute the values into the formula.

arc length = 2 × π × 9 ×(\frac{124}{360})

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3 years ago
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alex41 [277]
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A half-dollar coin issued by the United States Mint measures 30.61 millimeters across. Nick has 9 half dollars. He lines them up
Paraphin [41]

Answer:

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137,745 mm

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6 0
2 years ago
An envelope is 4 cm longer than it is wide. the area is 96 square centimeters. find the length and width.
Dennis_Churaev [7]
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4 0
3 years ago
Tan(42)= x over 16<br> I need the answer and how ya got it pleasee
xz_007 [3.2K]

Answer:

14.40646471 =x

Step-by-step explanation:

tan (42) = x/16

Multiply each side by 16

16 tan 42 = x/16 *16

16 tan 42 = x

16 * .900404044 = x

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