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3 years ago

Hi please this is urgent. Please write a detailed explanation of the error in this equation!!! Tysm in advance

Mathematics

1 answer:

Degger [83]3 years ago

4 0

Answer:

The second and third line are wrong

Step-by-step explanation:

(4x³ +4x²-8x) -(8x²-16x+4)

= 4x³ +4x²-8x - 8x²+ 16x -4

= 4x³ +4x²- 8x²-8x+ 16x -4

= 4x³ -4x²+ 8x -4

In the second line:

it has to be +16x because - times - is +

it is like -1*(8x²-16x+4)

In the third line:

you can only add or subtract the xs with the same exponentation, so

4x²- 8x² and -8x+ 16x

4x²- 8x²= -4x² not +12x²

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A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books. What is the probability

Gnesinka [82]

Answer:

Probability that one of them is mathematics and other two are either physics or history books = 0.51

Step-by-step explanation:

Given - A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

To find - What is the probability one of them is mathematics and other two are either physics or history books ?

Solution -

Given that,

A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

So,

Total number of books = 3 + 3 + 1 = 7

The student has to select 3 books

So, Total number of ways = $^{7} C_{3}$ = 35

So,

Probability that one of them is mathematics and other two are either physics or history books is -

= $\frac{^{3} C_{1}. ^{4} C_{2} }{^{7} C_{3}}$

= $\frac{(3)(6)}{35}$

= $\frac{18}{35}$

= 0.51

⇒Probability that one of them is mathematics and other two are either physics or history books = 0.51

8 0

3 years ago

What is -13/6(12/7)=

-BARSIC- [3]

Answer:

-267

Step-by-step explanation:

−136(127)

=(−136)(127)

=(−13)(12)(6)(7)

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= −267

5 0

3 years ago

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Identify any values of data that might affect the statistical measures of spread and center.

ruslelena [56]

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3 years ago

A clothing business finds there is a linear relationship between the number of shirts, n, it can sell and the price, p, it can c

Vitek1552 [10]

Answer:

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Step-by-step explanation:

The slope of the linear equation can be found by using the two given points (30, 1000) and (22, 3000):

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Applying the point (30, 1000) to the general form of a linear equation with m =-0.004, gives us the linear relationship between price (p) and number of shirts (n):

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3 years ago

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How do i find the slope-<br> 20 points answer!<br> [imagine below included!]

Dafna11 [192]

Answer:

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Step-by-step explanation:

The slope formula is..

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3 years ago