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2 years ago

How many ways can a president, vis-president and treasurer be selected from a group of 15 students?

Mathematics

1 answer:

dybincka [34]2 years ago

8 0

Answer:

455ways

Step-by-step explanation:

This is expressed as 15 C 3 ( C- combination)

The concept of combination is used when we talk about selection.

Now we are selecting 3 from a sample of 15

15 C 3 = 15! / (15-3)! 3! = 15 ×14×13×12!/12!×3×2

= 5 × 7 × 13 = 455ways

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There are 21 more days before the first big winter storm and the squirrel collects 12 acorns a day, how far away from her origin

alexandr402 [8]

She has 445 left after the bear ate some so
21 × 12 = 252
252 + 445 = 697 acorns

she should maybe bother the bear so he can't hibernate, or steal his food so he knows what it's like

6 0

2 years ago

An airplane descends 1.5 miles to an elevation of 6.05.Find the elevation of the plane befor its descent the intial elevation of

LuckyWell [14K]

Answer:

7.55 miles

Step-by-step explanation:

Given that :

Distance of descent = 1.5 miles

New elevation point after descent = 6.05 miles

The initial elevation of the plane before descent will be :

New elevation point after descent + Distance of descent

(6.05 miles + 1.5 miles)

= 7.55 miles

8 0

2 years ago

trevor bought a large container of 36 pretzel snack bags for $14.04 what is the cost of each snack bag

sweet [91]

Answer:

$0.39

Step-by-step explanation:

You divide 36 and $14.04 to get the answer, which is $0.39.

3 0

2 years ago

Read 2 more answers

Can someone help me on this question?

notsponge [240]

Answer:

x = 19.6

Step-by-step explanation:

By applying cosine rule in ΔBCD,

cos(30)° = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

= $\frac{BC}{BD}$

$\frac{\sqrt{3}}{2}=\frac{BC}{16}$

BC = $8\sqrt{3}$

Now, by applying sine rule in ΔBAC,

sin(45)° = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$

$\frac{1}{\sqrt{2}}=\frac{AB}{BC}$

$\frac{1}{\sqrt{2}}=\frac{x}{8\sqrt{3}}$

x = $8\sqrt{6}$

x = 19.59

x ≈ 19.6

3 0

2 years ago

Georgia has 168 songs in her playlist, while Scarlet has 266 songs in her playlist. Which statement correctly compares the

Mnenie [13.5K]

Answer:

168<266

Step-by-step explanation:

7 0

2 years ago