Answer:
Its d 5/10
Step-by-step explanation:
Get the equation simplified. Subtract 4 by each side.
20-4= 16
and the square root of 16, is 4.
Plug it in to check.
(4)^2+4=20
16+4=20
20=20
Ultimately your final answer is X=4
Answer:
Step-by-step explanation:
<u>Solve using ratios, which gives us equal scale factors:</u>
- 2 / x = 25 / 250
- 2 / x = 1 / 10
- x = 2*10
- x = 20 inches
time= distance/speed
take distance as d. take time as t.
the time taken: d/ 65 for the train however it is the same distance for d/130 so we can say (d/65)-3 = d/130
now solve the equation, multiply both sides by 130
2d-390=d
2d-d=390
so d=390 mi
