Step-by-step explanation:
Let average velocity of outgoing trip = x mph
The average velocity on the return trip is 15 miles per hour slower than the average velocity on the outgoing trip.
Average velocity of return trip = (x-15) mph
Distance to vacation place = 420 miles
Distance to vacation place = Time for outgoing trip x average velocity of outgoing trip
Distance to vacation place = Time for return trip x average velocity of return trip
We have total time T = t₁ + t₂
That is
Time required to complete the round trip where x is average velocity on the outgoing trip.
Answer: 2r-12
Step-by-step explanation:
(4r+10)+____=(6r-2)
_____=(6r-2)-(4r+10)
_____=6r-2-4r-10
_____=2r-12
ground? Which diagram represents this scenario?
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22 ft
22 ft
22 ft
Answer:
19.05 ft
Step-by-step explanation:
-Given Hypotenuse=22 ft and the base length is 11 feet.
-We apply the Pythagorean theorem to find the height:
Hence, the stair's height is 19.05 ft
Answer:
19.05
Step-by-step explanation:
Answer:
3x+9
Step-by-step explanation:
is its density?
Answer:
≈0.0947 kg/m^3
Step-by-step explanation:
p = density
m = mass
v = volume
Formula for density :
p = m/v
We know the mass and volume, so we can simply substitute our values into the equation:
p = m/v
p = 1800kg / 19000 m^3
p = ≈0.0947 kg/m^3
Answer:
Domain:
Range:
Step-by-step explanation:
The domain is the span of x-values the graph covers.
The range is the span of y-values the graph covers.
The given graph is a quadratic. We can see that the x-values will extend infinitely in both directions.
Thus, the domain is all real numbers.
In set notation, this is:
From the graph, we can see that the maximum value is y=-2. The graph won't ever go above this.
So, the range is all real numbers less than or equal to -2.
In interval notation, this is:
And we are done :)