Answer:
Bradford T. answered • 11/08/20. Tutor. 5 (6). Retired Engineer / Upper level math instructor ... You need to first subtract 4 from both sides of the equation and see if you ... (x +3/2)(x+1/2) = x2 + x/2 + 3x/2 + 3/4 = x2 + 2x + 3/4 = 0 --> 4x2 + 8x + 3 ... You can plug them back into your original question to check.
Step-by-step explanat
i hope this help
Answer:
Purple line: 4
Red dashed line: 2
Blue line: 1/2
Step-by-step explanation:
The purple line is the steepest line, therefore it has the biggest constant of proportionality or slope. Since 4 is the biggest number among the others, we attribute it to the purple line (the one with the point C on it).
Think of it this way:

here
so 
The greater a is, the greater y is. So for any value of x, y will be become bigger and bigger if we increase the value of a.
Take for example this one:

Take
therefore
Now take
and take
therefore
When we increased this constant of proportionality, as you can see from 2 to 4, the value of y increase from 4 to 8.
Hope this is helpful. Think of it really carefully, and I'm sure you'll grasp the concept.
Answer:
Between 20% and 80%,,,
Step-by-step explanation:
There is no way to really explain it.
Answer:
17.5 miles per hour
Step-by-step explanation:
A boat travels upstream on a Mississippi river for 3.5 hours
The return trip takes 2.5 hours
The boat travels 2 miles per hour faster downstream
Let y represent the speed that was travelled upsteam
3.5y = 2.5(y + 2)
3.5y = 2.5y + 5
3.5y - 2.5y = 5
y = 5
Therefore the distance travelled by the boat upstream can be calculated as follows
= 3.5 × 5
= 17.5 miles per hour