Answer:
x=Sin-1(0.470584)
x=28.1°
Step-by-step explanation:
Sin90°/17 =Sin x°/8
0.058823 = Sin x°/8
8(0.058823)=Sin x°
x°=Sin-1(0.470584)
x=28.1°
<span>4(x+5) = 4x +5x
Simplify by distributing and combining like terms
</span>(4)(x)+(4)(5)=4x+5x
4x+20=4x+5x
4x+20=(4x+5x)
4x+20=9x
Subtract 9x from each side
4x+20−9x=9x−9x
5x+20=0
<span />
Subtract 20 from each side
−5x+20−20=0−20
−5x=−20
Divide each side by -5
-5x ÷ -5 = -20 ÷ -5
x = 4
P.S this was actually harder than most algebra problems, so don't beat yourself about it :D<span /><span /><span /><span /><span />
x^2 - 49 = 0
Add 49 to both sides:
x^2 = 49
Take the square root of both sides:
X = 7
Answer:
B
Step-by-step explanation:
He plays a total of 11 + 17 + 7 = 35 songs of which 7 are disco, thus
percent of disco = 
× 100% = 
× 100% = 20% → B
Answer:
one solution.: -6.5
Step-by-step explanation:
First you start with the side with parenthisis. So you multiply 7xY= 7y and then you multiply 7x3= 21 so you get 7y + 21 = 5y + 8
Second you subtract 8 from both sides.
7y + 21 = 5y +8
-8 = -8
wich leaves you with 7y + 13 = 5y
Next you want to subtract 7y from 5y because you cant have a variable on both sides. 7y + 13 = 5y
-7y + 13 = -7y which will leave you with 13= -2y
Now you divide each number by -2 to get "y" by itself.
13/-2 = -6.5 = y
