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Anuta_ua [19.1K]
1 year ago
13

Which relationships could have a negative correlation? Select three options.

Mathematics
2 answers:
stepan [7]1 year ago
6 0

Answer:

a,b,c

Step-by-step explanation:

its right

Rudik [331]1 year ago
5 0

The relationships that could have a negative correlation are as follows:

  • the speed of a train and the length of time to reach the destination
  • number of hours worked and free time
  • speed of a car and minimum stopping distance

<h3>What is negative correlation?</h3>

Correlation between two variables shows the relationship between the two variables.

A positive correlation means that both variables move in the same direction i.e. as one increases, the other increases.

However, a negative correlation means that both variables are inversely related i.e. one increases as the other decreases.

Therefore, the relationships that could have a negative correlation i.e. inversely related are as follows:

  1. the speed of a train and the length of time to reach the destination
  2. number of hours worked and free time
  3. speed of a car and minimum stopping distance

Learn more about correlation at: brainly.com/question/6563788

#SPJ1

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Tìm số dư trong phép chia 3^{2020} chia cho 13
djverab [1.8K]

Your question translates to computing 3^{2020} \pmod {13}.

Recall Euler's theorem: if \gcd(a,n)=1 (that is, a and n are relatively prime), then a^{\varphi(n)}\equiv1\pmod n, where \varphi(n) denotes Euler's totient function, which counts the number of positive integers relatively prime to n.

Since 13 is prime, we have \phi(13)=12. Then by Euler's theorem,

3^{12} \equiv 1 \pmod{13}

Now, observe that 2020 = 168×12 + 4, so that

3^{2020} \equiv 3^{168\times12+4} \equiv \left(3^{12}\right)^{168} \times 3^4 \equiv 1^{168} \times 3^4 \equiv 3^4 \pmod{13}

and since 3⁴ = 81 = 6×13 + 3, we end up with

3^{2020} \equiv 81 \equiv 3 \pmod{13}

so the remainder upon dividing 3²⁰²⁰ by 13 is 3.

5 0
2 years ago
The perimeter of rectangular park is 450m.the length of the sides is in the ratio 3:2.find the area of the rectangle
matrenka [14]

Answer:  12,150 m²

<u>Step-by-step explanation:</u>

The ratio is 3:2 which means

Length (L) = 3x

Width (w) = 2x

Perimeter (P) = 2L + 2w

              450 = 2(3x) + 2(2x)

              450 = 6x + 4x

              450 = 10x

                45 = x

                                      L = 3x                w = 2x

                                         = 3(45)               = 2(45)

                                         = 135                  = 90

Area (A) = L × w

              = 135 × 90

              = 12,150

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2 years ago
Juan bought 48 ounces of nuts at the store. How much is this in pounds?
Anton [14]
Say you have a 48 ounce cantaloupe it would be equal to 3 pounds
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2 years ago
Write an algebraic expression that models the word phrase.
lutik1710 [3]

Answer:

B: 6x+2

Step-by-step explanation:

hope this helps :)

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2 years ago
Louise completed the work shown below. (5x3 + 3)2 = (5x3)2 + (3)2 = 25x6 + 9 Determine if Louise’s answer is correct. Explain
Sergeu [11.5K]

Louise’s answer is not correct. She is missing the term 30x3. When squaring a binomial, it is best to write the product of the binomial times itself. Then you can use the distributive property to multiply each term in the first binomial by each term in the second binomial. Louise also could have used the formula for a perfect square trinomial, which is found by squaring a binomial.

10 0
3 years ago
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