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crimeas [40]
3 years ago
5

What is the value of the exponential expression below? 36 1/2

Mathematics
2 answers:
Licemer1 [7]3 years ago
8 0

Answer:

Step-by-step explanation:For this case we have an exponential expression of the form:

 

 We can rewrite the exponential expression using power properties.

 We have then:

 

 From here, we take the square root of 36.

 We have then:36^{ \frac{1}{2}}=6

Aleksandr [31]3 years ago
6 0

36 1/2 = 6

Given: the exponential expression

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A boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h.
docker41 [41]

Answer:

A)63miles per hour.

B)27 miles per hour

Step-by-step explanation:

HERE IS THE COMPLETE QUESTION

boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h. What is the boat's speed (in still water)??b) How fast does the current in the river flow?

Let the speed of boat in still water = V(boat)

speed of current=V(current)

To calculate speed of boat downstream, we add speed of boat in still water and speed of current. This can be expressed as

[V(boat) +V(current)]

It was stated that it takes 1hour for the

boat to travels between two points of 90 mi apart downstream.

To calculate speed of boat against current, we will substact speed of current from speed of boat in still water. This can be expressed as

[V(boat) - V(current)]

and it was stated that it takes 2 1/2 for return trip against the Current

But we know but Speed= distance/time

Then if we input the stated values we have

V(boat) + V(current)]= 90/1 ---------eqn(1)

V(boat) - V(current) = 90/2.5----------eqn(2)

Adding the equations we have

V(boat) + V(current) + [V(boat) - V(current)]= 90/2.5 + 90/1

V(boat) + V(current) + V(boat) - V(current)]=90+36

2V(boat)= 126

V(boat)=63miles per hour.

Hence, Therefore, the speed of boat in still water is 63 miles per hour.

?b) How fast does the current in the river flow?

the speed of the current in the river, we can be calculated if we input V(boat)=63miles per hour. Into eqn(1)

V(boat) + V(current)]= 90/1

63+V(current)=90

V(current)= 27 miles per hour

Hence,Therefore, the speed of current is 27 miles per hour.

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h=6
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3 years ago
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10+4x+6y because 25-15 3+1 and 16-10
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2 years ago
Read 2 more answers
I’m totally confused can someone please help me!!!
german
The second answer is right
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The percentage of apples that are bad is 25%. This is because 25% of 24 is 6. I hope this helped! 
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