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lisov135 [29]
2 years ago
13

Which number are irrational ?​

Mathematics
1 answer:
raketka [301]2 years ago
5 0

Answer:

neither of them

Step-by-step explanation:

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Solve x and y 3x-4y=18,9x-2y=12
Rudiy27

Answer:

3x-4y=18

1xy=18

xy=18 ans

4 0
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1) -
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Step-by-step explanation:

сумма внутренних углов треугольника не должна превышать 180 градусов

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1 year ago
Which equation has no solution?
EastWind [94]

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Step-by-step explanation:

7 0
2 years ago
Simplify: ( 6 to the second power minius 7 times 3 ) + 3 cubed
Tju [1.3M]

Answer:

42

Step-by-step explanation:

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5 0
3 years ago
Determine the mass of a solid steel ball that has a diameter of 10 cm. The density of pure steel is 8.09 g/cm3
Basile [38]

Answer:

<em>The mass of the steel ball is 4,235.9 gr</em>

Step-by-step explanation:

<u>Density</u>

The density ρ of a substance is a measure of its mass per unit volume:

\displaystyle \rho=\frac{m}{V}

If the density and the volume are given, the mass can be calculated by solving the above formula for m:

m=\rho.V

We know the density of pure steel ρ=8.09 gr/cm3 and the diameter of a solid steel ball d=10 cm.

We need to calculate the volume of the sphere:

The volume of a sphere of radius r is given by:

\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3

The radius is half the diameter: r= 10/2 = 5 cm. Thus:

\displaystyle V=\frac{4}{3}\cdot \pi\cdot 5^3

Calculating:

V=523.6\ cm^3

The mass is:

m=8.09 gr/cm^3 \cdot 523.6\ cm^3

m=4,235.9 gr

The mass of the steel ball is 4,235.9 gr

4 0
2 years ago
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