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GaryK [48]
3 years ago
8

How to solve this math 3-3x6+2=

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
4 0
Lets change the equation.
3 -(3*6) +2           Multiply 3*6 first and get 18
3 -18+2         -     Same as 3-(18)+2
-15 +2                  3 -18 is the same as doing 18 -3, but with the negative
                             Do the same to -15 +2

Answer is -13
Semmy [17]3 years ago
3 0
Im pretty sure its -13 because of Please Excuse My Dear Aunt Sally. You would do 3×6 first which is 18. Then you would do 3-18+2 and 3-18 is -15. Then -15+2 is -13
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Both expressions equal 5 when substituting 2 for x because the expressions are equivalent. Hope this helped :D
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Abdul ordered some books online and spent a total of $133. Each book cost $8 and he paid a total of $5 for shipping. How many bo
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Step-by-step explanation:

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The volume of a rectangular prism is 6x^3 -x^2 -2x. Which model could represent the rectangular prism?
Oksi-84 [34.3K]

The formula of a volume of a rectangular prism: V = lwh

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w - width

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1.) A 20° sector in a circle has an area of 21.5π yd².
a_sh-v [17]

<u>Part 1)</u> A 20° sector in a circle has an area of 21.5π yd².

What is the area of the circle?  

we know that

the area of a circle represent a sector of 360 degrees

so by proportion

\frac{21.5\pi }{20} =\frac{x}{360} \\ \\ x*20=360*21.5\pi \\ \\x=(360*21.5*3.14)/20\\ \\x= 1,215.18\ yd^{2}    

therefore

<u>the answer part 1) is</u>

The area of the circle is 1,215.18\ yd^{2}

<u>Part 2)</u> What is the area of a sector with a central angle of 3π/5 radians and a diameter of 21.2 cm?

we know that

the area of the circle is equal to

A=\pi r^{2}

where

r is the radius of the circle

in this problem we have

Diameter=21.2\ cm\\ r=Diameter/2\\r=21.2/2\\r= 10.6\ cm

<u>Find the area of the circle</u>

A=\pi r^{2}

A=\pi*10.6^{2}

A=352.8104\ cm^{2}

<u>Find the area of the sector</u>

we know that the area of the circle represent a sector of 2\pi radians

by proportion

\frac{352.8104}{2\pi }=\frac{x}{(3\pi/5)} \\\\x*2\pi=(3\pi*352.8104)/5\\ \\x= 105.84\ cm^{2}

therefore

<u>the answer part 2) is</u>

the area of the sector is

105.84\ cm^{2}

7 0
3 years ago
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