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HACTEHA [7]
3 years ago
5

Last question for pls help

Mathematics
1 answer:
borishaifa [10]3 years ago
6 0

Answer:

Neither Is correct

Step-by-step explanation:

Sarah just added all four sides of the rectangle. She added 3x+3x+(x+7)+(x+7), which is a correct way to find the perimeter. What she did wrong, though, is not adding all the x's together, she only added the 3x, but not the lone x's.

John, on the other hand, had a good start but not the greatest finish. He also started out correct, by multiplying the 2 "3x's" and the 2 "(x+7)'s". It's basically doing what Sarah said, but multiplying. But what he did wrong was not distributing the 2 to the (x+7) properly.

He did this: 2(x+7)=2x+7

But what he should have done is this: 2(x+7)= 2(x)+2(7) (distributing the x to every term, including the seven), which gives you 2x+7, by which adding the 6x after gives 8x

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What is the asymptote of the graph of f(x)=5x−1?
Marina86 [1]

The asymptotes of the graph of f(x) = \frac{5}{x - 1} are as follows:

  • Vertical: x = 1.
  • Horizontal: y = 0.

<h3>What are the asymptotes of a function f(x)?</h3>

  • The vertical asymptotes are the values of x which are outside the domain, which in a fraction are the zeroes of the denominator.
  • The horizontal asymptote is the value of f(x) as x goes to infinity, as long as this value is different of infinity.

In this problem, the function is:

f(x) = \frac{5}{x - 1}

For the vertical asymptote, we have that:

x - 1 = 0 \rightarrow x = 1.

For the horizontal asymptote, we have that:

y = \lim_{x \rightarrow \infty} f(x) = \frac{5}{\infty - 1} = 0.

More can be learned about asymptotes at brainly.com/question/16948935

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2 years ago
`9` is `50\%` of what number?
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Step-by-step explanation:

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3 years ago
According to a polling​ organization, 22% of adults in a large region consider themselves to be liberal. A survey asked 200 resp
SOVA2 [1]

Answer:

Step-by-step explanation:

Using the proportion test

Null hypothesis: p <= 0.22

Alternative hypothesis: p > 0.22

Using the formula

z score = p - P /√ (P(1-P)/n)

Where p is 74/200= 0.37, P = 0.22, n = 200.

0.37-0.22 / √(0.22(1-0.22)/200)

0.15 / √(0.22(0.78)/200)

0.15 / √(0.1716/200)

0.15/ √0.000858

0.15 / 0.02929

= 5.1212

To help arrive at a conclusion, we have to find the p value, using a p value calculator at the 0.05 level of significant, the p value is less than 0.00001... Thus we would reject the null as there is sufficient statistical evidence to prove that the proportion is higher than that reported by the polling ​organization.

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3 years ago
Plz<br> Help<br> Me <br> And thank u
Natalija [7]

Sorry- but- Wouldn't the answer be the same as the the teal curved line? Wouldn't X= 152? Sorry, I'm no genius. .__.

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3 years ago
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