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ratelena [41]
3 years ago
8

Pedro goes to the store and buys a binder, a folder, and a highlighter. The folders cost is half the cost of the binder, and the

highlighters cost is $1.25 less than the binder. The total cost of the three supplies, with no tax, is $4.75. Write an equation to represent the solution.
I need help​
Mathematics
1 answer:
Sindrei [870]3 years ago
4 0

Answer:

x + x/2 + x-1.25=4.75

Step-by-step explanation:

binder is x

folder is x/2

higlighter is x-1.25

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horrorfan [7]
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4 0
3 years ago
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Arada [10]

Using a confidence interval of proportions, it is found that the correct statement is given by:

D a confidence interval for estimating the cricket's true probability of landing on its feet is more narrow after the final 10 jumps than it was before the final 10 jumps.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
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The margin of error is given by:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

The margin of error is inversely proportional to the square root of the sample size, hence, the higher the sample size, the narrower the interval is, hence option D is correct.

More can be learned about a confidence interval of proportions at brainly.com/question/25890103

7 0
2 years ago
The sum of a number 8 and twice the number X is 28
hichkok12 [17]

<u><em>ANSWERS ARE AT THE BOTTOM</em></u>

<u><em></em></u>

<u><em>To solve this question, we need to write the questions algebraically. Let's look at the problem first: The sum of a number 8, and twice the number x is equal to 28.</em></u>

<u>Algebraic form:</u>

8 + 2x = 28

<u><em>Lets solve this!</em></u>

<u><em></em></u>

8 + 2x = 28            (Algebraic Form)

2x = 28 - 8             (Subtract 8 from both sides)

2x = 20                  (Divide by 2)

<u><em>x = 10</em></u>                     (Answer)

<u><em>ANSWER:</em></u>

<u><em></em></u>

<u><em>x = 10</em></u>

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2 years ago
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Answer:

This is what I put:

Step-by-step explanation:

4 0
3 years ago
What’s the correct answer for this question ?
andreyandreev [35.5K]

Answer:

C

Step-by-step explanation:

It closely resembles to a sphere.

8 0
3 years ago
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