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mafiozo [28]
4 years ago
7

What is the value of x?Enter your answer in the box.x=​

Mathematics
1 answer:
Lina20 [59]4 years ago
3 0

Answer:

x = 8

Step-by-step explanation:

This is an equilateral triangle, so we know that the angles are all equal too.

That means each angle is 60 degrees (b/c 60 * 3 = 180)

7x + 4 = 60

7x = 56

x = 8

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The value of a car is $30,000. It loses 6.5% of its value each year. What will the value of the car be after 5 years?
Kitty [74]
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4 years ago
Need help with my trig homework
dalvyx [7]

The 30º-60º-90º triangle is a special case you'd do well to remember, because the legs always occur in the same ratio to one another. As your picture shows (I'm guessing "SL" stands for short leg?), the sides labeled 4, y and x occur in a ratio of 1 to √3 to 2.

This means

sin(30º) = SL/(2*SL) = 1/2

tan(30º) = SL/(√3*SL) = 1/√3

(and also cos(30º) = (√3*SL)/(2*SL) = √3/2, though you don't really need that here)

So in this triangle, x and y satisfy

sin(30º) = 4/x

tan(30º) = 4/y

This comes straight from the definitions of sine and tangent. Then

4/x = 1/2  ==>  x = 8

4/y = 1/√3  ==>  y = 4√3

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3 years ago
Find the missing length.
Umnica [9.8K]

Answer:

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Step-by-step explanation:

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3 years ago
I am really confused can someone please help?!
pshichka [43]

If the triangle is translated left 9, this shows that all the x values will decrease by nine, becoming, -15, -5, and -8.

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Step-by-step explanation:

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