Answer:
2)y=6
4)36=a
Step-by-step explanation:
8y=48
/8 /8
y=6
18=a/2
*2 *2
36=a
You wanna get x by itself
Remember some simle log rules
loga+logb=log(ab)
xloga=loga^x

means

also, if no base is stated, assume base 10
so
log(2x)=-1 is base 10 and translates to
10^-1=2x
1/10=2x
divide both sides by 2 aka times 1/2
1/20=x
3log(2)+log(x)=3
log(2^3)+log(x)=3
log(8)+log(x)=3
log(8x)=3
base 10
10^3=8x
1000=8x
divide both sides by 8
x=125
Answer:
131/333
Step-by-step explanation:
999x = 393
x = 393/999
simplify by dividing by 3
x = 131/333
this is its simplest form
If tan(x) = a/4, then
a is opposite <span>to the angle x and
4 </span><span>is adjacent to the angle x
</span>If cos(x) = 4/b, then
4 is adjacent to the angle x and
b is the hypotenuse
sin(x) = opposite/hypotenuse =
a/b
Answer is D.