All categories

3 years ago

Keyona had 254 dollars to spend on 9 books. After buying them she had 11 dollars. How much did each book cost ?

Mathematics

2 answers:

guajiro [1.7K]3 years ago

8 0

Answer:

Each book costs $27.

Step-by-step explanation:

Subtract 254 - 11.

254 - 11 = 243

Now, divide 243 by 9.

243 ÷ 9 = 27

Hope this helped!

iragen [17]3 years ago

5 0

27 hope to this helped

You might be interested in

Find the height of a right triangle with a hypotenuse of 15 feet and a base of 12 feet.

GalinKa [24]

Answer:

c^2=a^2+b^2

c is hypothesis b is abase h is a

15^2=x^2 +12^2

225-144 =x^2

81=x^2

x=9

8 0

3 years ago

The diagram below , not drawn to scale , shows three points R , S and F on the horizontal

Katyanochek1 [597]

The question is an illustration of right-angled triangles.

The length of RF is 49.1 m
The length of SR is 65.5 m
The elevation from S to T is 30 degrees

See attachment for the sketch

(a) Show that RF = 49.1

Considering $\triangle FTR$

We have:

$\tan(R) = \frac{FT}{RF}$ ---- tangent ratio

This gives:

$\tan(27) = \frac{25}{RF}$

Make RF the subject

$RF = \frac{25}{\tan(27)}$

$RF = 49.06$

Approximate

$RF = 49.1$

(b) Calculate SR

Considering $\triangle FRS$

We have:

$SR^2 = RF^2 + FS^2$ ---- Pythagoras theorem

This gives

$SR^2 = 49.1^2 + 43.3^2$

$SR^2 = 4285.7$

Take square roots

$SR = 65.5$

(c) The elevation from S to T

To do this, we make use of tangent ratio from $\triangle FST$

$\tan(S) = \frac{FT}{FS}$

$\tan(S) = \frac{25}{43.3}$

Take arc tan of both sides

$S = \tan^{-1}(\frac{25}{43.3})$

$S = 30^o$

Read more about right-angled triangles at:

brainly.com/question/3770177

8 0

3 years ago

Which of the following is the graph of y= -x-3?

Anastaziya [24]

Step-by-step explanation:

I have answered ur question

3 0

4 years ago

The length of a rectangle is 6 units and its width is 4 units. What is the approximate length of the diagonal of the rectangle?

cupoosta [38]

7.2 use the pythagorean theorem after you draw the rectangle and label the units and draw a diagonal line to find the length

6 0

4 years ago

Read 2 more answers

Can someone help please!!!!!!!!!!!!!!

Ksenya-84 [330]

Step-by-step explanation:

The population of a small town is 1600 and is increasing at a rate or. 3% per year.

8 0

3 years ago