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Alexxandr [17]
3 years ago
6

I need blank 1 and blank 2

Mathematics
1 answer:
lord [1]3 years ago
8 0

Answer:

Blank 1: 40

Blank 2: 10

Step-by-step explanation:

You can start by representing the speed of the water as x and the speed of the dolphin as y, and writing an equation.

y+x=50

y-x=30

Adding these two equations together, you get:

2y=80

y=40 for the speed of the dolphin in still water. Now, you an use one of the previous equations to find the speed of the current.

40-x=30

x=10

Hope this helps!

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Answer:

The answer is: 2x^2-7x-2

Step-by-step explanation:

we are asked to subtract 7x-9 from 2x^2-11

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Hence the desired result is:  2x^2-7x-2.


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3 years ago
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Answer:

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Step-by-step explanation:

2x - y= 3 ...........equation 1

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Collect like terms

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Substitute y= 25/11 in equation 3

x=14 - 5(25/11)

x= 14 - 125/11

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