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tresset_1 [31]
2 years ago
5

If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?

Mathematics
1 answer:
Mice21 [21]2 years ago
4 0

Answer:

y = 18/5(11)

Step-by-step explanation:

If y varies directly as x, this is expressed as;

y∝x

y = kx

k is the constant of proportional constant

if y = 18 and x = 5

18 = 5k

k = 18/5

to get the expression that can be used to find the value of y when x is 11

y = kx

y = 18/5(11)

This gives the required expression

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Answer:

Please check the explanation.

Step-by-step explanation:

Given

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b)

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Putting x = -5 in f(x) = 2x - 1

f(x) = 2x - 1

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e)

f(g(x)) = f(2-x)

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Need help finding the domain and range
pogonyaev

Here are a few things you'll need to know for this question:

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So firstly, let's look at the domain. We see that there is a closed circle at x = -2 and an open circle at x = 5. Using what we know, <u>the interval notation of the domain is [-2,5).</u>

Next, let's look at the range. We see that there is a closed circle at y = -5 and an open circle at y = 2. Using what we know, <u>the interval notation of the range is [-5,2).</u>

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Answer:

x = 25

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Given

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