The speed of the airplane is the ratio of the distance to the time
The initial average speed of the airplane is approximately 110.8 mph
Reason:
Given parameters are;
The distance between Portland Oregon and Seattle Washington = 145 miles
The decrease in travel time when the speed is increase by 20 mph = minutes
The initial speed of the airplane, v = Required;
Solution;


Therefore;

Which gives;

Therefore
0.2·v² + 4·v - 2,900 = 0
v ≈ ±110.8 mph
The initial average speed of the airplane, v≈ ± 110.8 mph
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brainly.com/question/11365874
Answer:
y =
x + 7
Step-by-step explanation:
Given
x = 3t ( divide both sides by 3 )
x = t
Substitute this value into y = 2t + 7
y = 2 ×
x + 7 =
x + 7
What 2 numbers multiply to get -20 and add to get -8
-10 and 2
(p-10)(p+2)
For this case we have the following variables:
x: number of bracelets.
C: manufacturing cost
We have then:
C (256) = 1536
Thus,
The number of bracelets is:
256
The price is:
$ 1536
Answer:
the cost to the company is $ 1536 to manufacture 256 braclets
Let, the numbers = x, (x+2), (x+4)
x+x+2+x+4 = 63
3x+6=63
3x=57
x = 19
so, smallest number would be 19