-3x+13=16
Move +13 to the other side. Sign changes from +13 to -13.
-3x+13-13=16-13
-3x=16-13
-3x=3
Divide by -3 for both sides.
-3/-3x=3/-3
Cross out -3 and -3, divide by -3, then becomes 1*1*x=x
x=-1
Answer: x=-1
Answer:its 1/2
Step-by-step explanation:
The answer would be C. 3
You find range by subtracting the highest number minus the lowest number.
The speed of the current is 25 kilometers per hour.
<h3>What is the speed of the current?</h3>
According to the statement, Naira traveled first with the current and later against the current, both in the same amount of time. We assume that both the speed of the current and the speed of the vehicle are constant. Hence, the travel time can be expanded to the following expression:
s₁ / (v + v') = s₂ / (v - v')
Where:
- s₁ - Distance traveled with the current, in kilometers.
- s₂ - Distance traveled against the current, in kilometers.
- v - Speed of the current, in kilometers per hour.
- v' - Speed of the vehicle relative to the current, in kilometers per hour.
If we know that s₁ = 4.5 km, s₂ = 3 km, v' = 5 km /h, then the speed of the current is:
4.5 / (v + 5) = 3 / (v - 5)
4.5 · (v - 5) = 3 · (v + 5)
4.5 · v - 22.5 = 3 · v + 15
1.5 · v = 37.5
v = 25
The speed of the current is 25 kilometers per hour.
To learn more on relative speeds: brainly.com/question/14362959
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