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Anika [276]
2 years ago
8

Tap A can fill 4 pails in 55 seconds.

Mathematics
1 answer:
rewona [7]2 years ago
7 0

Answer:

Below in bold.

Step-by-step explanation:

Work in times to fill 1 pail:-

tap A takes 55/4 seconds

tap B takes 50/3 seconds

Let time to fill one pail be x when filling together, then:

3/50 + 4/55 = 1/x

165x + 200x = 55*50

x = 2750 /(365) = 7.5342 seconds

To fill 16 pails it takes 7.5342* 16

= 120.55 seconds

= 2 minutes 1 second to the nearest second..

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defon

Answer:

N = -5

Step-by-step explanation:

Move the decimal point right until it is right after the first significant figure.

N = 5

But wait! It's a decimal so it has to be negative.

N = -5

6 0
3 years ago
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Tresset [83]
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2 years ago
What is the conjugate? See image below! Please help asap
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9514 1404 393

Answer:

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Step-by-step explanation:

The conjugate is found by changing the sign of the square root term.‡ (For this purpose, i = √-1.)

a) the sign of 3i is changed: 2 + 3i

b) the sign of sqrt(-5) is changed: 8 -sqrt(-5) = 8 -i√5

c) the sign of 2i is changed: 7 +2i

d) the sign of sqrt(7) is changed: 4 +√7

_____

‡ Actually, the conjugate of a binomial is formed by changing the sign <em>between</em> terms. The purpose is to allow the product of the binomial and its conjugate to be the difference of squares.

Conventionally, the conjugate of a complex number is the value with the sign of the imaginary part reversed. That is why (-2i+7)* = 7+2i.

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=18%20%7Bx%7D%5E%7B2%7D%20-%20x%20-%2039%20" id="TexFormula1" title="18 {x}^{2} - x - 39 " alt=
Anton [14]
I don’t know if you can solve it since it is an expression?
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3 years ago
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Answer:

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Step-by-step explanation:

I Just Know Because I Was Teacher And This Is 5th Grade Work But Sadly I Cant Explain If You Get It Right Please Mark Me Brainliest

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3 years ago
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