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DaniilM [7]
3 years ago
14

It takes a boat 4 hours to travel downstream 84 miles and 5 hours to travel up stream 55 miles. What is the speed to the boat in

still water ? Mph what is the speed of the current ? Mph
Mathematics
1 answer:
Olegator [25]3 years ago
7 0

Answer:

16 MPH boat speed still water

5 MPH current speed


Step-by-step explanation:

84/4 - x = 55/5 + x

x = (84/4-55/5)/2 = 5 mph current speed in MPH

11+5 = 16 is boat speed in MPH

21 MPH downstream, 11 MPH upstream

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stepan [7]

Answer:

-15, -5, -3, -2.6, 0, 3

Step-by-step explanation:

6 0
3 years ago
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If (y + 1) varies directly as square root of x and y =14 when x = 27, find the value of y when
marysya [2.9K]

Answer:

22.1 or 22

Step-by-step explanation:

Y + 1 varies√x

Y + 1 = K√x ( k is costant)

so we solve for K

given: 14 + 1 = K√27

15 = K√27

divide both sides by √27

15/√27 = K

to find the value of y

y + 1 = 15/√27 (8) : substitute K for 15/√27

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i.e Y = 120/√27 - 1

Y = 23.1 - 1

Y = 22.1 or 22

5 0
2 years ago
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swat32

There's 5 1/8 cups of water left in the pitcher.

- 5 1/2 = 11/2


- 11/2 = 44/8


- 44/8 - 3/8 =41/8


- 41/8 = 5 1/8


7 0
3 years ago
ABCD is a parallelogram. AC = 9cm, DC = 11cm, angle DAC = 100'. Calculate the area of the parallelogram
amm1812
I was wondering why my previous post was deleted (I attached the same picture below).

I spent a long time drawing and labeling a diagram as well as writing out a detailed formulaic explanation.

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