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2 years ago

I will mark brainlest and give 50 points.

Mathematics

1 answer:

Ray Of Light [21]2 years ago

4 0

Answeok

Step-by-step explanation:

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A book has 12 chapters. The mean length of the chapters is 40 pages. How many total pages are there in the 12 chapters?

amm1812

Answer:

480

Step-by-step explanation:

Important Information:

A Book Has 12 Chapters.

The Mean length of the chapters is 40 pages.

Question to Answer:

How many total pages are there in the 12 chapters?

Explanation/Solution:

Let's assume that the total number of pages in the book is "x" pages.

To find the mean (average) we divide the total "x" by 12 because there are 12 chapters in the book, which would equal to 40.

$\frac{x}{12}$ =40

Multiply both sides by 12...

x = 480

Hence, The total number of pages in the 12 chapters is 480.

7 0

2 years ago

What is the distance between -4.32 and 0 on the number line?

saveliy_v [14]

B looks the most reasonable

5 0

3 years ago

Read 2 more answers

Help! Due in 5 minutes

Katyanochek1 [597]

2/7 + 4/7 = 6/7 Can be rewritten as
4/7 + 2/7 = 6/7

7 0

3 years ago

Find the value of x, for which : (81) -4 ÷ (729) 2-x = 9 /4x

tamaranim1 [39]

Answer:

$\huge{x = \frac{236164}{9477} = 24 \frac{8716}{9477}}$

Step-by-step explanation:

$(81) - 4 \div (729)2 - x = \frac{9}{4} x$

$81 - \frac{4}{729} \times 2 - x = \frac{9}{4} x$

$81 - \frac{8}{729} - x = \frac{9}{4} x$

$\frac{59041}{729} - x = \frac{9}{4} x$

$236164 - 2916x = 6561x$

$- 2916x - 6561x = - 236164$

$- 9477x = - 236164$

$\boxed{\green{x = \frac{236164}{9477} = 24 \frac{8716}{9477}}}$

4 0

3 years ago

What is the slope of the line through the points (2, 8) and (5, 7)? 3 - 1/3 -3 1/3

cluponka [151]

Answer:

Option B

Step-by-step explanation:

In order to find the answer to this question you need to use the slope formula and solve by subtracting the numerator and the denominator.

$slope=\frac{y^2-y1}{x^2-x^1}$

$x^1,x^2=(2,5)$

$y^2,y^1=(8,7)$

Substitute:

$\frac{8-7}{2-5}$

Subtract:

$8-7=1$

$2-5=-3$

$=\frac{-1}{3}$

Hope this helps.

4 0

2 years ago