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____ [38]
3 years ago
12

IF you could pls help me, don't answer if u don't know the answer but if correct I will give brainless.

Mathematics
2 answers:
dem82 [27]3 years ago
7 0

So the perimeter of the track is less than 400 meters.

so 398.12

saw5 [17]3 years ago
3 0
398.12 hope that helps
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Y = -4x - 5 <br>y = 3x - 2 <br><br>Is (3, 7) a solution of the system?<br><br>Will give brainliest!​
Evgesh-ka [11]

Answer:

x=-3/7 and y=_23/7

Step-by-step explanation:

y=-4x-5 and y=3x-2

using comparison method

-4x-5=3x-2

-4x-3x=-2+5

-7x=3

x=3/-7

substituting the value of x

y=3x-2

=3×(-3/7)-2

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=-9-14/7

=-23/7

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3 years ago
Which relationship in the triangle must be true ?
Ivan

Answer:

Choice B. sin(B)=cos(90-B)

Step-by-step explanation:

That cofunction identity is the one you looking for...choice B.

If you aren't convinced or don't know that identity, then maybe this will help:

90-B is actually the same thing as saying A for this right triangle since A+B=90.

So choice B basically says sin(B)=cos(A)

Well let's find both sin(B) and cos(A)

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cos(A)=b/c

Those are the same ratios!

So they are equal!

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Answer:

D

Step-by-step explanation:

Took the test

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The area of a dollhouse is 1248 square inches the width of the room is 8 inches how long is the room
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3 years ago
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