Answer:none
Step-by-step explanation:
Because they are all straight angle line
Y=2x —> positive line
Y=2-x —> negative line
Y=x2-2 —> positive line
Y=-2x —> negative line
You can also check this at desmos
Answer: 9
Step-by-step explanation:
<span>Let x = time (minutes) it takes for the faster computer to do the job alone
then
12(1/30 + 1/x) = 1
</span><span><span>multiplying both sides by 30x:
12(x + 30) = 30x
12x + 360 = 30x
360 = 18x
20 minutes = x
</span><span>
</span></span>
Answer:
x-2/x-5
Step-by-step explanation:
Step 1 {x^2+x-6}/{x^2-2x-15}
Step 2 (x-2)(x+3)/x^2-2x-15
Step 3 (x-2)(x+3)/(x+3)(x-5)
=x-2/x-5
3 days, 275/5=55 pages/day. 440-275=165. 165/5=3