Help help help help help help help

Mathematics

2 answers:

vova2212 [387]4 years ago

4 0

All together there are 48 + 30 books, which comes out to 78 books. All discount packages contain the same number of books.

Think of the products of integers equal to 48: 3*16, 4*12, 6*8. Are there more?

Think of the products of integers equal to 30: 3*10, 5*6, 2*15. Are there more?

Think what these sets of factors have in common: there could be 8 packages of 6 science books (48 books total); there could be 5 packages of 6 mysteries (30 total). Doing this, we ensure that every package has the same number of books (6). We can make (8+5), or 13, packages.

Check: Does (6 books/package)(13 packages) = 78 books? YES.

attashe74 [19]4 years ago

3 0

Answer:

Step-by-step explanation:

78/6=13

You might be interested in

Find the area using the given image.

ArbitrLikvidat [17]

Answer:

Step-by-step explanation:

Area = 1/2 * base + height

= 1/2 * 2 * 4

= 4 unit^2.

3 0

2 years ago

What is the angle measure of an arc bounding sector with an area of 5pie square miles?

Snowcat [4.5K]

if the diameter is 20, the its radius must be half that or 10.

$\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta \pi r^2}{360}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ A=5\pi \\ r=10 \end{cases}\implies \begin{array}{llll} 5\pi =\cfrac{\theta \pi (10)^2}{360}\implies 5\pi =\cfrac{5\pi \theta }{18} \\\\\\ \cfrac{5\pi }{5\pi }=\cfrac{\theta }{18}\implies 1=\cfrac{\theta }{18}\implies 18=\theta \end{array}$