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anastassius [24]
2 years ago
13

Suppose f(x)= x^2 and g(x)= (1/5x)^2. Which statement best compares the graph of g(x) with the graph of f(x)?

Mathematics
2 answers:
stiv31 [10]2 years ago
6 0

Answer:

A is correct

The graph g(x) is the graph of f(x) horizontally stretched by factor of 5.

Step-by-step explanation:

We are given two function f(x) and g(x). We need to compare both functions using graph.

f(x)=x^2

g(x)=\left(\frac{1}{5}x\right)^2

If we compare f(x) and g(x)

f(\frac{1}{5}x)=\left(\frac{1}{5}x\right)^2=g(x)

So, here change in coefficient of x

If y=f(x) then y=f(ax)

Horizontal stretch/compress by factor of a

If a>1 then stretch

If 0<a<1 then compress

Here a is 0.2<1

Therefore, g(x) is stretch horizontally by factor of 5

Thus, The graph g(x) is the graph of f(x) horizontally stretched by factor of 5.

Naya [18.7K]2 years ago
3 0
The graph is horizontally stretched by a factor of 1/5 because you are literally multiplying x by 1/5. So, your answer is A. Hope it makes sense.
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ANSWER

36,-36

EXPLANATION

The given function is:

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To write this function in vertex form;

We need to add and subtract the square of half the coefficient of x.

The coefficient of x is 12.

Half of it is 6.

The square of 6 is 36.

Therefore we add and subtract 36.

Hence the zero pair is:

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The correct answer is D.

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3 years ago
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Please teach me on how to answer this question. (addmath question)
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We know that \overline{x}=8 so:

\overline{x}=8\\\\\\\dfrac{\sum\limits_{k=1}^7\,x_k}{7}=8\qquad|\cdot7\\\\\\ \boxed{\sum\limits_{k=1}^7\,x_k=56}

We want to calculate:

\sum\limits_{k=1}^7\,\big(2x_k-3\big)^2=\sum\limits_{k=1}^7\,\big(4x_k^2-12x_k+9\big)=\\\\\\=\sum\limits_{k=1}^7\,4x_k^2-\sum\limits_{k=1}^7\,\big12x_k+\sum\limits_{k=1}^7\,9=4\sum\limits_{k=1}^7\,x_k^2-12\sum\limits_{k=1}^7\,x_k+\sum\limits_{k=1}^7\,9=\\\\\\=4\cdot672-12\cdot56+7\cdot9=2688-672+63=\boxed{2079}

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2 years ago
How many days will it take for a sum of $4,000 to earn $80 interest if it is deposited in a bank paying ordinary simple interest
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Answer:

It will take 146 days to earn an interest of $80.

Step-by-step explanation:

The simple interest formula is:

I=\frac{P\times r\times t}{100}

It is provided that:

I = $80

P = $4,000

r = 5% p.a.

Compute the time required as follows:

I=\frac{P\times r\times t}{100}

t=\frac{I\times 100}{P\times r}

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Thus, it will take 146 days to earn an interest of $80.

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