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melomori [17]
3 years ago
6

2x2-50=0 me ajudem por favor e pra amanha

Mathematics
2 answers:
ira [324]3 years ago
5 0

the answer will be _46 because if we multiple 2 with to 2 =4then we will minus 4 with 50 so the answer will be -46

Hope you understand it easliy

kvv77 [185]3 years ago
3 0

Answer:

-46

Step-by-step explanation:

2×2=4-50 lol lol lol

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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.

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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.

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[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)

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Adding the equations we have

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

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?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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On your wedding day you leave for the church 34 minutes before the ceremony is to begin, which should be plenty of time since th
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Answer:

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Step-by-step explanation:

given data

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solution

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