(A) 4(x+5). Distribute the 4 (multiply both numbers by 4) and you get
4x+4*5
4x+20
(B) 70 km/h * y hours is 70y km, because you traveled 70 km every hour, so it's 70 times y.
Answer:
y=x+a/-2b
hope it helps u
Step-by-step explanation:
x
31x+9=y
Answer: 11.1
SOHCAHTOA
Sine is opposite of the angle divided by the hypotenuse
sin(46) = 8/x
Plug this into a calculator to get x = 11.1