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marusya05 [52]
3 years ago
10

Bobby has 3 times as many model spaceships as his friend Sylvester does. Bobby has 21 spaceships. How many model spaceships does

Sylvester have?
Mathematics
2 answers:
Phoenix [80]3 years ago
4 0
Set the problem up like this:
3•X=21
then divide both sides by 3 and you get:
Sylvester has 7 spaceships
sweet [91]3 years ago
3 0
He has seven models because 21 divided by 3 is seven
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3 years ago
The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y
Cerrena [4.2K]

We have been given that the inverse variation y=\frac{3\times 10^8}{x} shows the relationship between wavelength in meters, x, and frequency, y. We are asked to find the wavelength for radio waves with frequency 3\times 10^9.

To find the required wavelength, we substitute y=3\times 10^9 in our given equation and solve for x as:

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3 years ago
Read 2 more answers
Can someone help me with this please ​
alexgriva [62]
The answer to the question is c
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Can you help with these 3 question pls it is due at 8 pm
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Step-by-step explanation:

1. a + 130 =.180 ---> a = 50°

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t = 34° (definition of vertical angles)

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