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3 years ago

Share £12 in the ratio 1:2

Mathematics

1 answer:

bazaltina [42]3 years ago

4 0

Answer:

£4 and £8.

Step-by-step explanation:

There are 3 parts to the sharing ( 2 + 1 = 3).

So one part is 1/3 of 12.

One part is 1/3 * 12 = £4

and 2 parts = 2/ * 1/3 * 12 = £8.

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2 years ago

Which of the two solids below are similar ?

Pachacha [2.7K]

Answer: I and II.

Step-by-step explanation:

By definition, two solids are similar if their corresponding sides are in the same ratio.

Knowing this, let's find which solids are similar:

Corresponding sides ratio of solids I and II:

$\frac{3}{2}=\frac{2}{\frac{4}{3}}=\frac{5}{\frac{10}{3}}$

$\frac{3}{2}=\frac{3}{2}=\frac{3}{2}$

Corresponding sides ratio of solids I and III:

$\frac{3}{\frac{9}{2}}=\frac{2}{3}=\frac{5}{8}$

$\frac{2}{3}=\frac{2}{3}=\frac{5}{8}$

Corresponding sides ratio of solids II and III:

$\frac{2}{\frac{9}{2}}=\frac{\frac{4}{3}}{3}}=\frac{\frac{10}{3}}{8}}$

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3 years ago

If light travels at 3. 108 m/s and its frequency is 6. 1015 Hz, then its wavelength is:

Sergio039 [100]

Answer:

$5 * 10^{-8} m$

Step-by-step explanation:

The speed of light is $3 * 10^8 m/s$ and its frequency is $6 * 10^{15} Hz$ .

The speed of light is given as:

c = λ * f

where λ = wavelength of light

f = frequency of light

Therefore, the wavelength is given as:

λ = c / f

=> λ = $\frac{3 * 10^8}{6 * 10^{15}}$

=> λ = $5 * 10^{-8} m$

The wavelength of the light is $5 * 10^{-8} m$

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3 years ago