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Ulleksa [173]
2 years ago
10

The Pretty Pool company is building a pool in

Mathematics
1 answer:
Softa [21]2 years ago
5 0

Answer:

  • 20 feet

Step-by-step explanation:

<u>The sides of rectangle are:</u>

  • w and w - 8

<u>The area is the product of adjacent sides:</u>

  • A = w(w - 8) = 240

<u>Solve the equation for w:</u>

  • w² - 8w = 240
  • w² - 8w + 16 = 256
  • (w - 4)² = 16²
  • w - 4 = 16
  • w = 20
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Write the range of the function using interval notation.
jenyasd209 [6]

Answer:

[-3, -1]

Step-by-step explanation:

The minimum y value is -3.

The maximum y value is -1.

-3 and -1 are included, so we use square brackets.

Answer: [-3, -1]

3 0
3 years ago
Tessa conducts an experiment and obtains results that are statistically significant. What is meant by "statistically significant
Lesechka [4]

9514 1404 393

Answer:

  (b)  It means that the results that Tessa obtained are too unusual to be explained by chance alone

Step-by-step explanation:

The test for statistical significance is a comparison of the result to the probability that it occurred by chance. The probability of a chance occurrence is usually set at 1% or 5%. The lower the percentage, the less likely a chance occurrence is, and the more difficult showing statistical significance becomes.

6 0
3 years ago
A quiz consists of 20 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of t
Pavlova-9 [17]

Answer:

0.00259

Step-by-step explanation:

Probability, p of making the correct guess ; 1 / 5 = 0.2

Passing grade = 50% ; 50% * 20 = 0.5 * 20 = 10

q = probability of not passing ;

q = 1 - p = 1 - 0.2 = 0.8

Using the binomial distribution formula :

P(x >=x) = nCx * p^x * (1 - p)^(n - x)

P(x >= 10) = p(x = 10) + p(x = 11)+... + p(x = 20)

P(x >= 10) = 10C20 * 0.2^10 * 0.8^10

P(x >=) 0.00259

7 0
3 years ago
Which table shows a function that is decreasing only over the interval
joja [24]

Answer:

Table 4th is showing the function that is decreasing only over the interval

Step-by-step explanation:

We have been given four tables below:

To determine the function that is decreasing only in the given interval

(-1,\infty)

We will check the values after -1 in all four tables

The table in which values is only  decreasing after -1 will be the table which shows a function is decreasing only.

In table 1 the value of x is increasing

In table 2 and 3 the value is increasing and then decreasing but we will consider only decreasing case

Therefore, Table 4th is correct.


8 0
3 years ago
Read 2 more answers
Luke was out of cereal for breakfast. He walked to the grocery store to buy his favorite, Honey Nut Cheerios. While looking at t
Stells [14]

Answer:

The answer is the family size

Step-by-step explanation:

I had to find how much it is per ounce and for the small box it cost $1.25 per ounce and for the family size it cost $0.41 which is less than $1.25 so the answer would be the family size of Honey Nut Cheerios

3 0
3 years ago
Read 2 more answers
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