Step-by-step explanation:
3(x+2) + 35 + 52 = 180 ( Angle sum property)
3x+ 6 + 87 = 180
3x + 93 = 180
3x = 180 - 93 = 87
x= 87/ 3
x = 29
∠C = 3 ( 29 + 2)
= 3 x 31
= 93
The area of a rectangular prism would be A=2(wl+hl+hw)
I hope this helped! Mark me Brainliest! :) -Raven❤️
Answer:
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Step-by-step explanation:
4x2=8
5x2=10
6x2=12
This answer is the closest to 12 but it doesn't go over 12, so this is less than or equal to 12
Answer:
Step-by-step explanation:
We are to show that 
<u>Proof:</u>
From trigonometry identity;


From trigonometry, 2sinAcosA = Sin2A

Also note that sin(B-C) = sinBcosC - cosBsinC
sin420cos140 - cos420sin140 = sin(420-140)
The resulting equation becomes;

= 
I would probably distribute 15 with the parentheses 15x 9860 which is 147,900 then you would add 6997+147,900
Y= 154187