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Elena-2011 [213]
3 years ago
8

A used bookstore will trade 2 of its books for 3 of yours. If Val brings in 18 books to trade, How many books can she get from t

he store?
Mathematics
2 answers:
dolphi86 [110]3 years ago
8 0

Answer:

She will get 12 books from the store

Step-by-step explanation:

We can use ratio's to solve

2 books out      x books out

------------------- =-----------------------------

3 books in          18 books in from Val


Using cross products

2 * 18 = 3 *x

Divide each side by 3

2*18 /3 = 3x/3

2*6 = x

12 =x

She will get 12 books from the store

Molodets [167]3 years ago
6 0

Answer:

12 from the bookstore

Step-by-step explanation:

3 of yours ↔ 2 from the bookstore

18 of yours ↔ 12 from the bookstore


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Please help with this question
natita [175]

Answer:

  12\sin{(2\theta)}\cos{(\theta)}

Step-by-step explanation:

The appropriate trig identity is ...

  \sin{a}+\sin{b}=2\sin{\left(\dfrac{a+b}{2}\right)}\cos{\left(\dfrac{a-b}{2}\right)}

Here, you have a scale factor of 6 and a=3θ, b=θ. Filling in these values gives ...

  6\sin{3\theta}+6\sin{\theta}=12\sin{\left(\dfrac{3\theta+\theta}{2}\right)}\cos{\left(\dfrac{3\theta-\theta}{2}\right)}\\\\=12\sin{(2\theta)}\cos{(\theta)}

8 0
3 years ago
Two shops sell the same brand of baked beans but in different sizes of tin.
serg [7]

Answer:

Price in shop B is cheaper by 12 p per kg

Step-by-step explanation:

<u>Shop A</u>

  • £5.65/5= £1.13 = 113 p

<u>Shop B</u>

  • £2.02/2= £1.01= 101 p

Price in shop B is cheaper by 12 p per kg

5 0
3 years ago
John wants to find the center of a wall so he can hang a picture. He measures the wall and determines it is 65.25" wide. 65.25"
antiseptic1488 [7]

Option B is correct.

John wants to find the center of a wall so he can hang a picture. He measures the wall and determines it is 65.25" wide.

Here, 65.25" is Quantitative, continuous

There are two types of quantitative data or numeric data: continuous and discrete.

As a general rule, counts are discrete and measurements are continuous. A continuous data can be recorded at many different points (length, size, width, time, temperature, etc.)

So, option B is the answer.


3 0
3 years ago
Statistics help please!!! I have no idea what to do!
blagie [28]

Answer:

not sure tbh

Step-by-step explanation:

5 0
3 years ago
The circumference of a circle is 28 x inches. What is the length of the radius of this circle?
Gala2k [10]

Answer:

The answer to your questions radius = 14 in

Step-by-step explanation:

Data

Circumference = 28π in

radius = ?

Circumference is defined as the distance around the edge of a circle.

Formula

Circumference = 2π radius

-Solve for radius

radius = Circumference /2π

-Substitution

radius = 28π / 2π

-Simplification

radius = 28/2

-Result

radius = 14 in

7 0
3 years ago
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