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sesenic [268]
3 years ago
13

Solve the equation k + 22 = 29​

Mathematics
2 answers:
Luden [163]3 years ago
7 0

Answer:

7

Step-by-step explanation:

k + 22 = 29

collect like terms

k = 29 - 22

k = 7

rosijanka [135]3 years ago
3 0

Answer:

K=7

Step-by-step explanation:

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6 0
2 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

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The mass of the steel ball is 4,235.9 gr

4 0
2 years ago
The sum of three numbers is 94. The first number is six less than the second. The third number is three times the second. What a
Vika [28.1K]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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yawa3891 [41]

Answer:

y = -0.2x + 1.4

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