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dalvyx [7]
3 years ago
9

As part of an activity during math class, Kiera has to select a secret number containing 3 different digits from 1 to 4. How man

y different secret numbers can Kiera create?
Mathematics
1 answer:
Alenkasestr [34]3 years ago
8 0

Answer:

24.

Step-by-step explanation:

The is the number of permutations of 3 digits from 4

= 4P3

= 4! / (4- 3)!

= 4 *3 *2 *1 / 1!

= 24/1

= 24.

You might be interested in
Wich one is bigger 3/3 or 7/8
MrRissso [65]
3/3=1 and 7/8 is < 1 so 3/3 is bigger
4 0
3 years ago
What shape is a rhombus related to and why​
Ksju [112]
A rhombus is related to a “Parallelogram”

Why? - because it fulfills the requirements of a parallelogram: a quadrilateral with two pairs of parallel sides. It goes above and beyond that to also have four equal-length sides, but it is still a type of parallelogram.

hope this helped <3
8 0
3 years ago
The world famous gambler from Philadelphia, Senor Rick, proposes the following game of chance. You roll a fair die. If you roll
Orlov [11]

Answer:

You lose $0.833 while Rick gains $0.833, and so Rick is not Loco

Step-by-step explanation:

There are six numbers on a dice. Thus, probability of rolling exactly one number = 1/6

Probability of rolling two is 2/6.

Rolling a 1 pays $25, and probability = 1/6

Rolling a 2 pays $5,and probability = 1/6

Rolling a 3 pays $0, and probability = 1/6

Rolling a 4 or 5 pays -$10, and probability = 2/6

Rolling a 6 pays -$15, and probability = 1/6

Thus,lets calculate the expected value;

EV = (25 × 1/6) + (5 × 1/6) + (0 × 1/6) + (-10 × 2/6) + (-15 × 1/6)

EV = - $0.833

This means you lose $0.833 while Rick gains $0.833, and so Rick is not Loco.

7 0
3 years ago
Please help math
Naddika [18.5K]
   
\displaystyle\\&#10;15(2a - 2) = 5(a^2 -1) \\  \\ &#10;30a - 30 = 5a^2-5\\\\&#10;-5a^2 + 30a -30 + 5 =0\\\\&#10;-5a^2 + 30a -25 =0 ~~~~~\Big| \times (-1) \\\\&#10;5a^2 - 30a +25 = 0~~~~~\Big| : 5 \\\\&#10;a^2 - 6a +5 = 0 \\  \\ &#10;a_{12}= \frac{-b\pm \sqrt{b^2-4ac}}{2a}= \frac{6\pm \sqrt{36-20}}{2}= \frac{6\pm \sqrt{16}}{2}=\frac{6\pm 4}{2}= \boxed{3\pm 2} \\  \\ &#10;a_1 = 3+ 2 = \boxed{5}\\\\&#10;a_2 = 3-2 = \boxed{1}



8 0
3 years ago
Read 2 more answers
Total cost of three shirts $25.99 each with sales tax of 5.5%
irakobra [83]
3 shirts at 25.99 each : 3 * 25.99 = 77.97
plus sales tax of 5.5% : 77.97 + .055(77.97) = 77.97 + 4.29 = 82.26
6 0
3 years ago
Read 2 more answers
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