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sveta [45]
3 years ago
8

A triangle has a perimeter of 165 cm. The first side is 65 cm less than twice the second side. The third side is 10 cm less than

the second side. Find the length of each side of the triangle.
What is the length of each side of the triangle?

55 cm, 60 cm, 50 cm

45 cm, 60 cm, 60 cm

65 cm, 55 cm, 45 cm

not enough information to solve
Mathematics
2 answers:
Morgarella [4.7K]3 years ago
4 0

Answer: choice a

Step-by-step explanation:

Set up your variables. For this question lets use x, y, and z.

the equations will be . .

x + y + z = 165

x = 2y - 65

z = y -10

If we now substitude the equations for x and z with the first equation we cans solve for y. Hence the equation will be  . . .

2y - 65 + y + y -10 = 165

y = 60

then substitude the equations for x and z with y.

your answer should match choice a.

monitta3 years ago
4 0

Answer:

y=60

Step-by-step explanation:

.....................................................................

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3 years ago
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6 0
3 years ago
Two ships leave from the same port. One travels west 84 miles and the other travels 62 miles north. Determine the distance betwe
Lerok [7]
The distance the ships traveled are like the legs of a triangle and the question wants to know the hypotenuse. To find the hypotenuse, use the pythagorean theorem. this is a^2 + b^2 = c^2, with a and b being the legs and c being the <span>hypotenuse.
</span>Plug in known values:
84^2 + 62^2 = c^2
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10900 = c^2
Now you just need to isolate c by finding the square root of both sides.
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5 0
3 years ago
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3 years ago
Find the number b such that the line y = b divides the region bounded by the curves x = y^2 − 1 and the y-axis into 2 regions wi
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Because of the symmetry, we can just go from x=0 to x=2 to find the area between 
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<span>x= √b </span>
<span>and we have the area as </span>
<span>∫(b - x^2) dx from 0 to √b </span>
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<span>b = 16^(1/3) = 2 cuberoot(2) </span>
<span>or appr 2.52</span>
7 0
3 years ago
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