2 years ago

2x + 3y = -2 3x - y = -14

Mathematics

1 answer:

DochEvi [55]2 years ago

6 0

Answer: The answer is x=-4 and y = 2

Step-by-step explanation: you have to use substitution

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(2y+9)+(3d+5)=? *simplify your answer*

netineya [11]

Answer:

$2y + 3d +14\\2(y+7)+3d$

Step-by-step explanation:

We remove the bracket and rearrange the numbers to add them. Only similar variables can be added together.

$(2y+9)+(3d+5)\\2y+9+3d+5\\2y + 3d + 9 +5\\2y + 3d + 14\\2(y+7)+3d$

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2 years ago

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If TR=11 ft, find the length of PS

Klio2033 [76]

Answer:

PS = 31.5 ft

Step-by-step explanation:

∠PTS = 180 - 16 = 154°

164°(π/180) = 41π/45 radians

PS = rθ = 11(41π/45) = 31.48573...

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2 years ago

The angle of elevation from a buoy in the water to the top of a lighthouse is 68degrees. If a buoy is 300 ft from the base of th

Katen [24]

Answer:

The height of the lighthouse is $742.5\ ft$

Step-by-step explanation:

Let

h -----> the height of the lighthouse

we know that

The tangent of angle of 68 degrees is equal to divide the height of the lighthouse by the horizontal distance from the buoy to the base of lighthouse

$tan(68\°)=\frac{h}{300}$

Solve for h

$h=(300)tan(68\°)=742.5\ ft$

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3 years ago

Is 18/54 equivalent to 3/9?

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2 years ago

Tim x: 3x(x-2) + 2(2-x)=0

olganol [36]

Answer:

Assuming this is the full problem.

3x^2-8x+4

Step-by-step explanation:

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2 years ago