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grigory [225]
3 years ago
10

What is the area of the trapezoid?

Mathematics
1 answer:
Marina CMI [18]3 years ago
6 0

Answer:

A=30

Step-by-step explanation:

A=a+b

   ------- x h

     2

3+7

-------  x 6

2

10/2=5

5 x 6 = 30

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What is the mass of a solid ball of iron with a radius equal to 18 cm if it is known that the density of iron is 7800 kg/m
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Answer:

60.6528 kg

Step-by-step explanation:

Assuming the solid ball of iron is a sphere with a radius of 18 cm (or 0.18 m), we can compute the volume of the sphere:

V=\frac{4}{3}\pi r^3\\\\V=\frac{4}{3}\pi (\frac{18}{100})^3\\\\V=\frac{4}{3}\pi (0.005832)\\\\V=0.007776

Therefore, the volume of the solid ball is 0.007776 m³

Since we know that density is mass/volume, then we can find the mass of the iron:

\rho=\frac{mass}{volume}\\ \\7800\: kg/m^3=\frac{mass}{0.007776\: m^3}\\\\mass=60.6528\:kg

Thus, the mass of the solid ball of iron is 60.6528 kg

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2 years ago
What error did Mr. Sanders likely make, and what is the actual fraction of students who have
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Step-by-step explanation:

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3 years ago
If you were to use the substitution method to solve the following system, choose the
Nezavi [6.7K]

Answer:

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Step-by-step explanation:

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2 years ago
The equation of a line perpendicular to y = 3 and passes through the point (24, -56).
Lera25 [3.4K]

Answer:

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Step-by-step explanation:

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