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creativ13 [48]
2 years ago
14

Y is inversibly prportional to x when y=7 x=9 work out the value when x=21​

Mathematics
1 answer:
Natasha2012 [34]2 years ago
3 0

Answer: a) Equation become xy=1 and the second part answer is b) y=1/21

Step-by-step explanation:

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55h+40=d<br><br> H= 6 <br><br><br> A-$307<br> B-$330<br> C-$290<br> D-$101
IgorLugansk [536]

Answer:

55 times 6 is 330 + 40 would be 370 so i dont see how it could be D -101

4 0
2 years ago
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The gas co2 is diffusin at steady state through a tube 20 cm long having a diameter of 1 cm and containing n2 at 350 k . the tot
Marrrta [24]

The value is J = 1.71*10^-6 kmol/m^2.s

According to the given conditions we get,

The length the tube l= 0.20m

The diameter of the tube d= 0.01m

The total pressure inside the tube P= 101.32kPa

The partial pressure of CO2 at the first end is

P1= 456mm Hg = 60794.832 Pa

The partial pressure of CO2 at the other end is

P2= 76mm Hg = 10132.472 Pa

The temperature is T = 298 K

The diffusion coefficient D= 1.67* 10^-5 m^2/s

Generally the molar flux of CO2 is mathematically represented as

J= D{p1-p2} / R.T

Here R is the gas constant with value R= 8.314 j/kmol

So we get J= 1.71 * 10^-3 mol/m^2.sec

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4 0
2 years ago
Geometry help please!!
Nostrana [21]

Answer: 13

Step-by-step explanation:

Equilateral triangle means that all sides are equal

Soo

3x + 1 must be equal to 5x - 9

3x + 1 = 5x - 9

-2x = -10

x = 5

Substitute x as 5 into either side value

3(5) + 1 = 15 + 1 = 16

So, all sides equal 16

Which means that y + 3 also equals 16

y + 3 = 16

y = 13

7 0
3 years ago
I need help pls!<br> A diameter is also a ____
il63 [147K]

Answer:

Chord.

Step-by-step explanation:

A chord us any line segment that joins two points on the circumference of a circle.

A diameter obeys that definition.

It's a special chord because it passes through the center of the circle.

7 0
3 years ago
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Easy pointsss, ill give you double
charle [14.2K]

Answer: 6 13/36 (B)

You add it by breaking wholes into parts.

7 0
4 years ago
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