I am having a hard time with my math. Sorry. Please help me! Thank you.
Hey...that's what we're here for...to help you [if possible ]....!!!!
First one : We know an opposite side to B = 35 and the hypotenuse = 37
So....sin B = 35 / 37
And we can use the sine inverse [arcsin ] to find B itself...so we have
arcsin (35/37 ] = B ≈ 71,07°
Second one
-1x^2 + 9x = 6 subtract 6 from both sides
-1x^2 + 9x - 6 = 0 ..... a =-1 b = 9 c = -6
So...the quad formula is
-b ± √ [ b^2 - 4ac ] -9 ± √ [ 9^2 - 4 (-1)(-6)] -9 ± √ [ 81 - 24]
_______________ = ___________________ = ____________ =
2a 2(-1) -2
-9 ± √ 57 -9 √ 57 9 √ 57
_______ = __ ± ___ = ___ ± ___
-2 -2 2 2 2
Last one
Sign in shape of a rhombus with a 60° angle and sides of 7 cm
The area = 7^2 * sin (60°) ≈ 49 * √3/ 2 = (49/2)√3 cm^2 = 42.4 cm^2