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Nikolay [14]
2 years ago
9

Is the solution to the quadratic equation written below rational or irrational? Justify your answer.

Mathematics
1 answer:
deff fn [24]2 years ago
8 0

Answer:

irrational

Step-by-step explanation:

It cant be square rooted perfectly.

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alina1380 [7]
If anything is not clear, just ask me.

6 0
3 years ago
The sales tax in one towns 8%. So, the total cost of an item can be written as c + 0.08c. What is the total cost of an item that
Artemon [7]
Short answer:
TotalCost = 12.96


Long answer:

It gives you the equation of

total cost = C + 0.08C

You just need to plug-in the $12 to the equation.
In other words, the equation is:
TotalCost = 12 + 0.08*12
TotalCost = 12 + 0.96
TotalCost = 12.96
5 0
3 years ago
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5 0
3 years ago
Prisha rolls a fair number cube multiple times and records the result of each roll. Her results are shown in the table.
Leona [35]

Answer:

The experimental probability of rolling a 3 is greater than the theoretical probability of rolling a 3

Step-by-step explanation:

* Lets explain the difference between the theoretical probability and

 experimental probability

- Theoretical probability is what we expect to happen

- Experimental probability is what actually happens when we try it out

- Both of them calculated by the same way, the number of possible ways

 an outcome can occur divided by the total

* Lets solve the problem

- The table has two column;

# Number Cube             # Observed Frequency

           1                                           18

           2                                          16

           3                                          24

           4                                          26

           5                                          16

           6                                          20

        Total                                      120

∵ The experimental probability of rolling a 3 = 24/120 = 1/5 = 0.2

∴ The experimental probability of rolling a 3 = 0.2 = 20%

∵ The theoretical probability of rolling a 3 = 1/6

∴ The theoretical probability of rolling a 3 = 0.1666 ≅ 17%

∵ 20% is greater than 17%

∴ The experimental probability of rolling a 3 is greater than the

  theoretical probability of rolling a 3

7 0
3 years ago
Read 3 more answers
Which pair of angles has congruent values for the sin x° and the cos y°?
IRISSAK [1]

Answer:

D

Step-by-step explanation:

We know that if angles x and y are complementary, then sin(x)=cos(y).

This means the measures of the angles have to add to 90 degrees, which is satisfied by the fourth option.

7 0
3 years ago
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