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lakkis [162]
2 years ago
10

Find the value of x and y of the equilateral triangle. I need it ASAP

Mathematics
1 answer:
katrin2010 [14]2 years ago
7 0

Answer:

x=12, y=30

Step-by-step explanation:

to find x:

in a equilateral triangle, all three sides are congruent, so:

4x-4=3x+8

x-4=8

x=12

to find y:

in an equilateral triangle, all the angles are 60°, so:

2y=60

y=30°

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snow_tiger [21]

Answer:

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Step-by-step explanation:

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2 years ago
14. Find the distance between (7,217pi/180 ) and (5,-23pi/36 ) on the polar plane.
irina [24]

Answer: the distance is  3.49 units

Step-by-step explanation:

There are some ways to find the exact distance, i will calculate the distance in rectangular coordinates.

When we have a point (R, θ) in polar coordinates, we can transform it into rectangular coordinates as:

x = R*cos(θ)

y = R*sin(θ)

Then we have:

(7,217pi/180 )

R = 7

θ = (217/180)*pi

x = 7*cos( (217/180)*pi) = -5.59

y = 7*sin( (217/180)*pi) = -4.21

So this point is (-5.59, -4.21) in rectangular coordinates.

And the other point is  (5,-23pi/36 )

R = 5

θ = -(23/36)*pi

x = 5*cos(  -(23/36)*pi ) = -2.11

y = 5*sin(  -(23/36)*pi ) = -4.53

So this point is (-2.11, - 4.53)

Then the point distance between those points is:

D = I (-2.11, -4.53) - (-5.59, -4.21) I

D = I (-2.11 + 5.59, -4.53 + 4.21) I

D = I (3.48, -0.32) I = √( (3.48)^2 + (-0.32)^2) =  3.49

4 0
3 years ago
Can Someone please help me with this I don't know it?!?! I have a test on Friday!!! Thank You!
aleksklad [387]

Answer: a = 3.5

Step-by-step explanation:

14=4a

divide both sides by 4

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4a/4 =1a or a

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3 0
2 years ago
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Ana filled her gas tank up with 16 gallons. her gas tank loses 0.04 of a gallon every mile she drives. how many gallons will be
kirza4 [7]

Answer:

8.8 gallons left in the gas tank.

Step-by-step explanation:

180 x 0.04 = 7.2

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7 0
3 years ago
Factorize (x+3)+5(x+3)​
Free_Kalibri [48]

6x + 18, that is the answer

8 0
3 years ago
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