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PSYCHO15rus [73]
3 years ago
12

What is the conjugate of 5+\sqrt{7}

Mathematics
1 answer:
Jobisdone [24]3 years ago
7 0

Answer:

\frac{5\sqrt{7}}{7}

Step-by-step explanation:

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2) Calculate the surface<br> area of the cylinder:<br> 5 cm
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Answer:

28π cm²

Step-by-step explanation:

The surface of a cylinder is given by the formula:

  • 2πrh + 2πr²

where r is the radius of the base, and h is the height.

Using the image, we can find that the radius of the cylinder would be 2 cm, and the height would be 5 cm.

Now, to find the surface area of the cylinder, we would have to plug in 2 for r (the radius of the base) and 5 for h (the height of the cylinder) into the formula for the surface area of a cylinder.

Now we plug in 2 for r and 5 for h for the equation for the surface area of a cylinder:

2π(2)(5) + 2π(2)² = 20π + 2π(4) = 20π + 8π = 28π

Remember, the radius and the height are given to us in cm, and w are solving for surface area, so the answer should be in cm² (square centimeters).

The surface area of the cylinder would be 28π cm².

28π cm² would be an exact answer. For the approximate answer, plug in 3.14 (most math classes use 3.14 to approximate π) for π.

I hope you find this helpful. :)

5 0
3 years ago
A car gets 40 km per gallon of gasoline. How many gallons of gasoline would the car need to travel 1240 km
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Ian bought a package of gummy bears that contains 4 cups. if he eats 2/3 cup everyday, how many days of candy does he have?
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Answer:

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Step-by-step explanation

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Answer: What is the distance from 0 on a number line called?

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Step-by-step explanation:

Here's a hint. I hope this helps.

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