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Mathematics
27.09.2022 21:47
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Explain how i do this pls ! - -7n+3= -46

Explain how i do this pls ! - -7n+3= -46
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hardyfombu
hardyfombu
4,6(34 marks)

n=-7

Step-by-step explanation:

7n+3=-46

7n=-46-3

7n=-49

n=-49/7

n=-7

yasirtgesmartkid
yasirtgesmartkid
4,5(17 marks)

C

Step-by-step explanation:

The formula we use to solve this would be:  T=\frac{\lambda}{v}

Where

T is the period in seconds

\lambda is the wavelength in m, and

v is the speed of the wave in m/s

We have \lambda equal to 100, and v = 200 m/s. Plugging these into the equation, we get the period:

T=\frac{\lambda}{v}\\T=\frac{100}{200}\\T=0.5

C is the right answer.

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