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larisa [96]
3 years ago
14

Does someone know how to answer these questions I would really appreciate it

Mathematics
1 answer:
irina [24]3 years ago
6 0

Answer:

Number 4: Yes, Numbers 5 and 6: See response below, Number 7: 24 meters

Step-by-step explanation:

Number 4: Negative numbers can't have real number square roots, but negative numbers can have real number cube roots. Take the cube root of -8 as an example. The answer would be -2. This also brings me to another point, discussed in the second response.

Number 5: A cube root is different than a square root being that -

1. the final answer of a cube root is always a negative number while that of a square root is always positive.

2. of course square roots area only applicable to positive numbers, rather cube roots, applicable to both negative and positive numbers

<em>And there are plenty more differences..........</em>

Number 6: I am not sure of a number where the square root and cube root are equal, don't give me credit on this question

Number 7: Take the cube root of 13,824 to get the dimensions, which are all equivalent to 24 (24 * 24 * 24 = 13,824)

*(Just want to add that it's 11:12 in the night, you should get sleep)

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Can you help me with these questions please?
Marianna [84]

The answers are following

sol1 y = x-1

sol2 y= x+ 7

sol4 y = x+4

Step-by-step explanation:

Solution 1

Here we are going put the point in the given equation ( given in the options)

If the each point satisfies any equation, that will be the relationship between x and y.

Given points are (-3,-4) , (2,1) , (5,4)

Let us take the option C as y = x -1

-4 = -3-1

1 = 2-1

4=5-1

Putting each value in the given equation we get LHS and RHS are same for all points. so, C is the answer.

Similarly, option B is the answer of Solution 2

Each point satisfies the equation y = x +7

Solution 4

y = x +4

You are requested to check the options of Q3 once.

5 0
4 years ago
Which of the following statements are true? Please help
Serhud [2]

Answer:

B and C

Step-by-step explanation:

- The answer in the attached file

4 0
3 years ago
4. In a sample of 1000 people, 130 can wiggle their ears. Two unrelated people are
Elina [12.6K]

Using the hypergeometric distribution, it is found that there is a 0.7568 = 75.68% probability that neither can wiggle his or her ears.

The people are chosen from the sample without replacement, which is why the <u>hypergeometric distribution</u> is used to solve this question.

Hypergeometric distribution:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

In this problem:

  • 1000 people means that N = 1000
  • 130 can wiggle their ears, thus k = 130
  • Two are selected, thus n = 2.

The probability that neither can wiggle his or her ears is P(X = 0), thus:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

P(X = x) = h(0,1000,2,130) = \frac{C_{130,0}C_{870,2}}{C_{1000,2}} = 0.7568

0.7568 = 75.68% probability that neither can wiggle his or her ears.

A similar problem is given at brainly.com/question/24826394

5 0
3 years ago
PLS HELP ME 6, 7, and 8 (SHOW WORK!!) + LOTS OF POINTS + THANKS! + BRAINLIEST IF POSSIBLE!
julsineya [31]
6. 1 \frac{1}{2} = \frac{6}{4} since \frac{1}{4} = 4 feet. Then 6*4=24 So the answer is C

7. 1200 m/8 cm = C. 1 cm = 150 m 

8. A. Since 1 in = 3 feet then 6 inches = 18 feet (6*3=18) and 4 inches = 12 feet (4*3=12) so the dimensions of her room are 16'x12'.

B. A=lxw so 16*12= 216 m^{2}

Hope that helps
6 0
3 years ago
Read 2 more answers
Please answer this thx
garri49 [273]
Independent is the rental fee in dollars, and dependent is the total cost of dollars. Correct me if im wrong.
5 0
2 years ago
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