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Bumek [7]
2 years ago
7

If f(X) = (3x+7)^2, then f(1)? A. 10 B. 16 C. 58 D. 79 E. 100

Mathematics
1 answer:
Sunny_sXe [5.5K]2 years ago
6 0

To evaluate a function at a specific x value, you simply need to substitute all occurences of x with that specific value.

So, starting from f(x) = (3x+7)^2, substitute every occurrence of x with 1 to compute

f(1) = (3\cdot 1 + 7)^2 = (3+7)^2 = 10^2 = 100

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Answer:

A. 5.16 s.

B. 5.66 s.

Step-by-step explanation:

A.

For a simple harmonic motion,

T = 2pi (sqrt * (l/g))

Given:

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T1 = 4 s

L2 = 5 cm

T2 = ?

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g = 7.4

At, L2,

T2 = 2pi*sqrt(5/7.4)

= 5.16 s.

B.

M1 = M1

M2 = 2*M1

For a simple harmonic motion,

T = 2pi (sqrt * (m/k))

4 = 2pi (sqrt * (M1/k))

M1/k = 0.405

Inputting the above values,

T2 = 2pi (sqrt * (2*M1/k))

= 2pi (sqrt * (2 * 0.405))

= 5.66 s.

4 0
2 years ago
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