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Scrat [10]
3 years ago
14

How do you do this question?

Mathematics
1 answer:
ankoles [38]3 years ago
3 0

Step-by-step explanation:

S = ∫ 2π y ds

ds = √(1 + (dx/dy)²) dy

ds = √(1 + (8y)²) dy

ds = √(1 + 64y²) dy

S = ∫₁² 2π y √(1 + 64y²) dy

S = π/64 ∫₁² 128y √(1 + 64y²) dy

S = π/64 [⅔ (1 + 64y²)^(³/₂)] |₁²

S = π/96 (1 + 64y²)^(³/₂) |₁²

S = π/96 (1 + 256)^(³/₂) − π/96 (1 + 64)^(³/₂)

S = π/96 (257√257) − π/96 (65√65)

S = π/96 (257√257 − 65√65)

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Oprs]
abruzzese [7]

Answer:

Soccer = 120

Tennis = 220

Step-by-step explanation:

The total number of students enrolling for soccer and tennis classes is, 340.

The ratio number of students enrolling for soccer and tennis classes is, 6:11.

Then,

6x + 11x = 340

17x = 340

x = 20

The number of students enrolled for soccer class is, 6x = 6 × 20 = 120.

The number of students enrolled for tennis class is, 11x = 11 × 20 = 120.

8 0
3 years ago
What is 26.895 rounded to (2dp decimal points)
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26.90 is the answer. hope this helps!
5 0
3 years ago
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Rasek [7]

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<u>670 numbers</u>

Step-by-step explanation:

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T2=2*3-2

T3=3*3-2

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<u>Tn=n*3-2</u>

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n*3=2010

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8 0
3 years ago
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7 0
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