Ask question

Ask question

All categories

3 years ago

15

Six books are to be placed in a 3-tier triangular shelf. How many ways can this be done if the top teir can hold one book, the s

econd tier can hold two books, the third teir can hold three books. (topic: permutation and combination)

1 answer:

lawyer [7]3 years ago

5 0

Answer:

you still need answerrrr

Step-by-step explanation:

You might be interested in

Krystal puts three pencils in order from longest to shortest. What is a fast way to order the same pencil from shortest to longe

mart [117]

By flipping the order

7 0

3 years ago

A parabola has a vertex at (-6, 2) and opens down. Which of the following represents the

Setler [38]

Answer:

I don't see any choices but I think the axis of symmetry is x=-6.

Step-by-step explanation:

4 0

3 years ago

Working together, two pumps can drain a certain pool in

podryga [215]

New pump = (Old Pump * Total) / (Old Pump - Total)
New pump = (14 * 6) / (14 -6)
New pump = (84) / (8)
New Pump = 10.5 hours

5 0

4 years ago

Read 2 more answers

20percent of what number is 74

julsineya [31]

<span> $\frac{20}{100} \times x = 74\\\\ x = 74\times \frac{100}{20}\\\\x = 74\times 5\\\\x = \boxed{370}$ </span>

6 0

3 years ago

Read 2 more answers

Ainat [17]

$(\stackrel{x_1}{3}~,~\stackrel{y_1}{6})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{18}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{18}-\stackrel{y1}{6}}}{\underset{run} {\underset{x_2}{5}-\underset{x_1}{3}}} \implies \cfrac{ 12 }{ 2 } \implies 6$

$\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{6}=\stackrel{m}{ 6}(x-\stackrel{x_1}{3}) \\\\\\ y-6=6x-18\implies {\Large \begin{array}{llll} y=6x-12 \end{array}}$

6 0

1 year ago