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Orlov [11]
2 years ago
10

Please please help me, i just really want to be done with my homework

Mathematics
1 answer:
Dafna1 [17]2 years ago
7 0

Answer:

s+6+s+6+s+s+2s=102, s=18

Step-by-step explanation:

The perimeter is the sum of the side lengths, so

the equation is s+6+s+6+s+s+2s=102.

5s+12=102 \\ \\ 5s=90 \\ \\ s=18

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seraphim [82]
252396 squares i think
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3 years ago
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Which of the following are lengths of the sides of a 30°-60°-90° triangle? A. 5√3, 15., 10√3 units B. 3, 4, and 5 units C. √3, 3
zaharov [31]

Answer:

A

Step-by-step explanation:

law of sine

c/sin(C) = b/sin(B) = a/sin(A)

with the sides and corresponding angles being always opposite.

sin(90) = 1

sin(30) = 0.5

c, the Hypotenuse, is the longest side in such a right-angled triangle.

c/1 = b/0.5

b = c×0.5 = c/2

so, one side has to be half the length of the longest side (Hypotenuse).

the only answer meeting that criteria is A.

the longest side is 10×sqrt(3) = 17.32...

the side half of that is 5×sqrt(3).

and Pythagoras for such a triangle is then

c² = (c/2)² + a²

c² = c²/4 + a²

so, a² = 3c²/4

c² = c²/4 + 3c²/4

therefore we can check also the third side

15² = 3×(5×sqrt(3))² = 3×25×3 = 3×75 = 225 = 15²

correct.

A is such a triangle.

5 0
2 years ago
What is -1/2 x 3/4? Please Help
Sever21 [200]

\bf -\cfrac{1}{2}\times \cfrac{3}{4}\implies \cfrac{-1\times 3}{2\times 4}\implies \cfrac{-3}{8}

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Which graph represents the function f(x)=-|x|-2 ?
Elden [556K]

Answer:

The graph of given function is shown below.

Step-by-step explanation:

The absolute parent function is g(x)=|x|. The graph of parent function is a V-shape d and vertex of the function is origin.

The given function is

f(x)=-|x|-2              .... (1)

The vertex from of an absolute function is

f(x)=a|x-h|+k          .... (2)

where, a is a constant and (h,k) is vertex of the function.

From (1) and (2) we get

a=-1,h=0,k=-2

The value of a is -1. The value of a is negative it means the graph of parent function reflect across x-axis.

The vertex of the function is (0,-2). It means the graph of parent function shifts 2 units down.

The graph of given function is shown below.

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At a restaurant, 36%
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Answer:

128

Step-by-step explanation:

72 people are vegetarians so 200-72=128

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