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Fiesta28 [93]
3 years ago
13

Solve the equation. 3x + 5 = x - 3

Mathematics
1 answer:
Luden [163]3 years ago
3 0

Answer:

x=-4

Step-by-step explanation:

Subtract x from 3x ( 2x )

2x+5=-3

Subtract 5 from -3 ( -8 )

2x=-8

Divide ( -4 )

x=-4

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Two people wrote a book together. They agreed to share the royalties so that the senior author received twice as much as the
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Answer:

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Step-by-step explanation:

7 0
3 years ago
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What is the length in feet of the base of the triangle?
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7 0
4 years ago
X + 2y = -3 x - y = -12
Nastasia [14]

Answer:

x = -9, y =3

Step-by-step explanation:

x + 2y = -3

x - y = -12

Subtract to two equations to eliminate x

x + 2y = -3

-x + y = 12

---------------------

   3y = 9

Divide each side by 3

3y/3 = 9/3

y = 3

Now we can find x

x-y =-12

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Add 3 to each side

x-3+3 = -12+3

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5 0
4 years ago
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5 0
4 years ago
A man on a 135-ft vertical cliff looks down at an angle of 16°13' and sees his friend.
iren2701 [21]
A) Use the trigonometric function and ratio cos(x) = A/H. (Adjacent/Hypotenuse)
1. cos(x) = 135/H
2. H*cos(16°) = 135
3. H = 135/cos(16°)
***Make sure calculator is in degree mode***
4. H = 140.44 ft (rounded to two decimal places)
________

b) Use the function and ratio tan(x) = O/A (Opposite/Adjacent)
1. tan(x) = O/A
2. tan(16°) = O/135
3. 135*tan(16°) = O
4. O = 38.71 ft (two decimal places)

Good luck!
6 0
3 years ago
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