Multiply it out first.
90x+225-4=1
Combine like terms.
90x+221=1
Start isolating variable.
90x=-220
x=-220/90=-22/9
The answer is x=-22/9.
Hope this helps!
First you simplify t/2.5=-5.2
Which is 0.4t=-5.2
Then we divide both sides by 0.4 which you get t=-13 as your answer so it's D
Answer:
a) a=8, b=3, c=-4
b) (-3 + )/16, (-3 - )/16)
c) roots in decimal form are 0.54 and -0.92
Step-by-step explanation:
a) 8n² + 3n - 4
b) (-3±) ÷ 16
6, solution is not extraneous.