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2 years ago

-2-3x=3+1x what is the answer

Mathematics

2 answers:

MrRissso [65]2 years ago

5 0

-2-3x=3+1x
-3x-1x=3+2
-4x=5
x=-5/4
or
x=-1.25

Fofino [41]2 years ago

4 0

-2-3x=3+1x
-2-3=1x+3x
-5=4x
x=-1.25

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An equilateral triangle has a perimeter of 48 cm. What is the area?

KiRa [710]

Answer:

$A=64\sqrt{3}\ cm^2$

Step-by-step explanation:

we know that

An <u><em>equilateral triangle</em></u> has three equal sides and three equal interior angles (each interior angle measure 60 degrees)

The perimeter is equal to

$P=3b$

where

b is the length side of the equilateral triangle

we have

$P=48\ cm$

substitute

$48=3b$

solve for b

$b=48/3\\b=16\ cm$

Find the area

The formula of area applying the law of sines is equal to

$A=\frac{1}{2}b^2sin(60^o)$

substitute the value of b

$A=\frac{1}{2}(16)^2sin(60^o)$

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$A=\frac{1}{2}(16)^2(\frac{\sqrt{3}}{2})$

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2 years ago

Find the length of arc RQ. Use 3.14

Helen [10]

Answer:

The length of arc PQ is 8.1 inches.

Step-by-step explanation:

First, you have to find the angle of POQ. Given that total angles in a circle is 360°, so you have to subtract to get ∠POQ :

$73 + 150 + 65 + ∠POQ = 360$

$288 + ∠POQ = 360$

$∠POQ = 360 - 288 = 72$

Next, you have to apply length of arc formula, Arc = θ/360×2×π×r where θ represents the angle of arc and r is the radius of circle :

$arc = \frac{θ}{360} \times 2 \times \pi \times r$

$let \: θ = 72,\pi = 3.14,r = 6.48$

$arc = \frac{72}{360} \times 2 \times 3.14 \times 6.48$

$arc = 8.1 \: inches \: (near.tenth)$

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3 years ago

37.33 as a percentage of 56

nika2105 [10]

Answer:

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Step-by-step explanation:

37.33% of 56 = 0.3733 × 56 = 20.9048

i hope this is what you meant. 37.33% of 56 is 20.9048

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2 years ago

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Wewaii [24]

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