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Pani-rosa [81]
3 years ago
15

A triangular sail has two sides the same length. The third side is 9ft shorter than either of the equal sides. The perimeter of

the sail is 63 ft. How long is the shortest side?
Mathematics
1 answer:
jeka943 years ago
4 0
a-length\ one\ of\ the\ same\ sides\\\\a-9-length\ of\ third\ side\\\\a+a+a-9=63\ \ \ \ \ \ |add\ 9\\a+a+a=63+9\\3a=72\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |divide\ by\ 3\\a=24\\\\a-9=24-9=15\\\\The\ shortest\ side\ is\ 15.
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Write a polynomial function in standard form with given zero x=2,-1,-5
LekaFEV [45]

Answer:

Done below!

Step-by-step explanation:

(x - root)

(x - 2)(x - (-1))(x - (-5)) = (x - 2)(x + 1)(x + 5)

(x^{2} +x-2x-2)(x+5)=(x^{2} -x-2)(x+5)=x^{3}+5x^{2}-x^{2}   -5x-2x-10\\\\=x^{3}+4x^{2} -7x-10

4 0
3 years ago
Find the coordinate of the points of intersection of the graphs without building them: 20x - 15y = 100 and 3x - 5 =6y
Mekhanik [1.2K]

Answer:

(-4.666667, -3.16667)

Step-by-step explanation:

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5 0
3 years ago
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Y=4x +5 y=x -4 a (3, 17) b (-3, -7) c (-3, 7) d (3, 7)
svlad2 [7]

Answer:

(-3, -7)

Step-by-step explanation:

y = 4x + 5

y = x - 4

add 4 to both sides of the second equation to get y + 4 = x

plug that back into the equation to get y = 4(y + 4) +5

distribute to get y = 4y + 16 + 5

combine like terms y = 4y + 21

subtract 4y on both sides to get -3y = 21

divide both sides by -3 to get y = -7

plug -7 into the second equation to get -7 = x - 4

add 4 on both sides to get -3 = x

therefore (-3, -7)

6 0
3 years ago
Please help meeeee!!
Xelga [282]

Answer:

-27

Step-by-step explanation:

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3x1 = 3 -5 = -2

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