8x - 3 = -19
8x = - 19 + 3
8x = -16
x = -16/8
x = -2
answer: the number is negative 2
The ratio of a pair of corresponding sides of 1/16.
Answer:
75 degrees
Step-by-step explanation:
let x unknown number
5x+10x+9x=180
24x=180
x=7.5
largest angle
10x
10×7.5=75
Answer: 3x^2+15x
Step-by-step explanation:
3x(x+5)
(x * x = x^2 and x * a number = a coefficent)
= 3x^2+15x
The reduced form of the trig expression is 7/2sin²2a
<h3>Trigonometry identity</h3>
Trigonometry identities are written in terms of sine, cosine and tangent. Given the trigonometry identity
14sin² acos² a
Since sin(a)cos(a) = sin2a/2, hence
14sin²acos²a = 14[sin(a)cos(a)]²
14sin²acos²a = 14(sin2a/2)²
14sin²acos²a = 14/4(sin²2a)
14sin²acos²a = 7/2sin²2a
Hence the reduced form of the trig expression is 7/2sin²2a
Learn more on trigonometry expression here: brainly.com/question/27904371
#SPJ1