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nadezda [96]
2 years ago
11

the ratio of red marbles to blue marbles in a bag is 3:4. which of the following is a possible total number of marbles is it 21,

30, 32, or 40.​
Mathematics
1 answer:
Viktor [21]2 years ago
4 0

Answer:

21

Step-by-step explanation:

so if the ratio is 3:4

then we can also write the ratio as 3x:4x

where the total is 7x marbles and we see we have to chose the one that is divisible by 7 which is 21.

if my answer helped please mark as brainliest.

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Answer:

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andreyandreev [35.5K]

Answer:

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Step-by-step explanation:

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2 years ago
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3 years ago
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Llana [10]
The correct answer is C.
8 0
3 years ago
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andreyandreev [35.5K]

Answer:

Option b is correct

\{x | x \neq \pm 7, x\neq 0\}.

Step-by-step explanation:

Domain is the set of all possible values of x where function is defined.

Given the function:

h(x) = \frac{9x}{x(x^2-49)}

To find the domain of the given function:

Exclude the values of x, for which function is not defined

Set denominator = 0

x(x^2-49) = 0

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⇒x = 0 and x = \pm 7

Therefore, the domain of the given function is:

\{x | x \neq \pm 7, x\neq 0\}

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