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3 years ago

What is -24 as a rational number

Mathematics

1 answer:

scoray [572]3 years ago

8 0

Answer:

A rational number is any number that can be expressed as a ratio of two integers (hence the name "rational"). ... For example, 1.5 is rational since it can be written as 3/2, 6/4, 9/6 or another fraction or two integers. Pi (π) is irrational since it cannot be written as a fraction.

Step-by-step explanation:

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What is 5 and 1/3 divided by 2/3

Ganezh [65]

Hope this helped you :)

7 0

3 years ago

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A team can row 40 km in 2 hours when rowing with the current, but only

dexar [7]

<h3>Answer: 14 km per hour</h3>

=====================================================

Work Shown:

x = rowing speed when there is no current

c = speed of the current

speeds are in km per hour

-----------

Going downstream, i.e. with the current:

x+c = faster speed since the current is pushing you

distance = rate*time

d = r*t

40 = (x+c)*2

x+c = 40/2

x+c = 20

c = 20-x

-----------

Going upstream, i.e. against the current:

x-c = slower speed since the current is working against you

d = r*t

16 = (x-c)*2

16 = 2x-2c

2x-2c = 16

2(x-c) = 16

x-c = 16/2

x-c = 8

x-(20-x) = 8 ... plug in c = 20-x

x-20+x = 8

2x-20 = 8

2x = 8+20

2x = 28

x = 28/2

x = 14 km per hour is the rowing speed when there is no current

Side note: the speed of the current is c = 20-x = 20-14 = 6 km per hour.

3 0

2 years ago

3x+4y+6z=15 Solve for x.

aalyn [17]

Answer:

Step-by-step explanation:

<h3>Question:-</h3>

To solve for x

<h3>Equation:-</h3>

3x + 4y + 6z = 15

<h3>Solution:-</h3>

=> 3x + 4y + 6z = 15

[On subtracting both sides with 4y]

=> 3x + 4y + 6z - 4y = 15 - 4y

[On Simplification]

=> 3x + 6z = 15 - 4y

[On subtracting both sides with 6z]

=> 3x + 6z - 6z = 15 - 4y - 6z

[On Simplification]

=> 3x = 15 - 4y - 6z

[On dividing both sides with 3]

$= > \frac{3x}{3} = \frac{15 - 4y - 6z}{3}$

[On Simplification]

$= > x = 5 - \frac{4}{3} y - 2z \: (ans)$

3 0

2 years ago

Read 2 more answers

1) The formula for the volume of a right circular cyfinder

uranmaximum [27]

Answer:

Step-by-step explanation:

I'm not sure what T represents, but it must have something to do with pi

V/T = r * h Now divide by r

V/(Tr) =h

5 0

2 years ago

Help answer please!!

12345 [234]

Answer:

h = 19.7 ft.

Step-by-step explanation:

Use the Pythagoras Theorem

$(Hypotenuse)^2 = (Base)^2 + (Perpendicular)^2\\\\(20)^2=(3.5)^2+(h)^2\\400=12.25+h^2\\400-12.25=h^2\\387.75=h^2\\$

Now we take square root on both sides,

$\sqrt{387.75} =\sqrt{h^2}\\19.69=h\\h=19.7\ ft\\$

so the value of h equals 19.7 ft.

6 0

3 years ago