The list below shows the prices of T shirts at a clothing store.

Mathematics

1 answer:

ankoles [38]3 years ago

5 0

Brainly only allows you to ask one question, however I will answer the first few.

Mean = 146.667

This is because if you add 810+10+12+15+15+18 you get 880. Divide that by 6 (there are 6 numbers) and you get 146.

Mark brainliest if helpful

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What is quadratic and it's formula

oee [108]

Answer:

A quadratic (equation or expression) involves the second and no higher power of an unknown quantity or variable.

Step-by-step explanation:

The quadratic formula is derived from the General form of a quadratic equation :

ax+bx+c=0

using completing the square method.

Quadratic formula=

$x = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a}$

7 0

3 years ago

PLZ help me with this :(

Kaylis [27]

Explanation:

Level 2

Part 1: √250 would be simplified to 5√10, because you need to find two factors that equal 250. 25 multiplied by 10 are two factors that you can utilize. Because 25 is a perfect square, it could be reduced to 5. Because 10 isn't a perfect square, you leave it as a radical.

Part 2: √250 is an irrational number because it's a non-terminating decimal and you cannot convert it into a fraction, so it wouldn't be rational.

Level 3

Part 1: √150x^5 would be simplified to 5x^2√6x. Again, find two factors that equal the product, 150. 25 multiplied by 6 are two factors that are useable. Just like the first question, 25 is a perfect square, so it can be reduced to 5. 6 is not a perfect square, so you would leave as a radical. Now, moving onto x^5. You can factor out x^4, because it's a perfect square. x^4 can become x^2. Move x^2 next to 5 and x would be left in the radical with 6.

Part 2: It's rational because 2√4 is simply just 2 x 2 because √4 is a perfect square. 4+7=11. 11 can be converted into a fraction, so it wouldn't be irrational.

Level 4

Part 1: 13√750x*5 y*8 would be simplified to 65x^2y^4√30x. Find two factors that equal 750, which are 25 and 30. You know the drill, 25 is reduced to 5 and 30 stays as a radical. Multiply 13 and 5 to get 65. Factor out x^4 out of x^5 to get x^2. x^8 is a perfect square that can be reduced to x^4.

Part 2: Two unique expressions are 4√16+3 and 5√8 x 34. √16 is a perfect square, so it can become 4. 4 x 4 is 16 and 16 + 3 = 19. 19 is a rational number. 5√8 is irrational, so right off the bat, you'll know it's an irrational expression.

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4 years ago

1/4, please help! Its due by the 15th

emmainna [20.7K]

Answer: The answer is 2k-13 because I just did it.And i'm very good at math.

Step-by-step explanation:

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3 years ago

It's all i the picture help!! i don't remember how to solve it

PtichkaEL [24]

I don’t know this but I need answers sorry

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