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Alika [10]
3 years ago
9

A bag contains white marbles and red marbles, 90 in total. The number of white marbles is 6 less than 5 times the number of red

marbles. How many white marbles are there?
Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0

Answer:

W = 72

Step by step explanation:

White = W

Red = R

W + R = 90

Write an equation

W = 5R - 6

Substitute

5R - 6 = 90

Add 6 to both sides of the equation

5R = 90

Simplify

90 ÷ 5 = 18

R = 18

90 - 18 = W

W = 72

Hope this was useful to you!

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Answer:

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Step-by-step explanation:

Given:

The Sun is roughly 10^2 times as wide as the Earth.

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About how many times as wide as the Sun is KW Sagittarii?

Solution:

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As the Sun is roughly 10^2 times as wide as the Earth, hence the width of the sun = x\times10^{2}

And as the Star KW Sagittarii is roughly 10^5 times as wide as the Earth, hence the width of the Star = x\times10^{5}

Now, to find that how many times width of the Star  KW Sagittarii is as respect to the width of the Sun, we will simply divide:

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\frac{x\times10^{5} }{x\times10^{2} }

x canceled by x

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Therefore, Star  KW Sagittarii is 1000 times wider than Sun.

<em>First of all we calculated width of Sun in terms of width of earth and then calculated the width of the Star in terms of earth and for comparison we did simple division that showed that the Star KW Sagittarii is 1000 times wider than the Sun.</em>

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