Answer:
∠ CBD = 63°
Step-by-step explanation:
∠ ABC + ∠ CBD = ∠ ABD, substitute values
7x - 9 + 6x + 27 = 96, that is
13x + 18 = 96 ( subtract 18 from both sides )
13x = 78 ( divide both sides by 13 )
x = 6
Thus
∠ CBD = 6x + 27 = 6(6) + 27 = 36 + 27 = 63°
Answer:
option (B).
Step-by-step explanation:
it's really simple....
just replace the (n) near the 3 with 1,2,3,4,5 and 6 and then solve the maths and when you're done , you add the answers all up.
sooo...
3(1)-2 = 1
3(2)-2 = 4
3(3)-2 = 7
3(4)-2 = 10
3(5)-2 = 13
3(6)-2 = 16
now we add them all up...
1+4+7+10+13+16 = <u>5</u><u>1</u><u>.</u>
Hope this helps.
Good luck.
Answer:
10x^2 +2x -9
Step-by-step explanation:
Group things that are alike and simplify
(3x^2+7x^2) = 10x^2
(2x) nothing to add or subtract with it so it stays positive 2x= +2x
(-5-4) = -9
Then put the answer from highest degree to lowest