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Harman [31]
3 years ago
11

Gianna brought seven necklaces for $50.75 and Winnie brought three necklaces for $24.60 who got the better deal

Mathematics
1 answer:
olganol [36]3 years ago
4 0
Gianna paid less per necklace so she got the better deal

Gianna: 50.75 / 7 = 7.25
So she paid $7.25 per necklace
Winnie: 24.60 / 3 = 8.20
So she paid $8.20 per necklace

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In a Match 6 Lotto, winning the jackpot requires that you select six different numbers from 1 to 49, and that the same six numbe
zimovet [89]

Answer:

P=\frac{1}{13,983,816}=7.2\ x\ 10^{-8}

Step-by-step explanation:

Consider the following characteristics of the problem:

The numbers that are selected are different between 1 and 49. This means that the same number is not repeated twice.

The order in which the selected numbers appear does not matter:

This means that (123) = (312)

With this in mind, we know that it is a problem of combinations without repetition. It is not calculated using permutations because in the permutations the order of selection is important, for example: (123) is not equal to (312)

The formula for calculating combinations without repetition is:

nCr=\frac{n!}{r!(n-r)!}

Where n is the number of "elements" you can choose and choose r from them

In this case:

n=49

r=6

So:

49C6=\frac{49!}{6!(49-6)!}

49C6=13,983,816\ outcomes

There are 13,983,816 possible results

This is the best method to calculate the number of possible outcomes.

<em><u>"Besides your method, is there another method to determine the number of outcomes?"</u></em>

Sure, make a list of the 13,983,816 different sets of 6 numbers.

To win it is necessary to obtain the 6 winning numbers in any order. The number of ways this can occur is calculated by combining 6 in 6

6C6=\frac{6!}{6!(6-6)!}=1

Finally the probability of winning is:

P=\frac{1}{13,983,816}=7.2\ x\ 10^{-8}

Note that the probability of winning is very close to 0. It is practically impossible to win the lottery, you will probably never win anything. Therefore it is better not to invest money in this

6 0
3 years ago
What is 5 1/4 divided by 1 5/9?
Sonbull [250]
21/4 ÷ 14/9
21/4 × 9/14
189/56
3/3/8
5 0
3 years ago
Read 2 more answers
Square root of 12 times negative 1 plus square root of 5
DENIUS [597]

Answer:

Hey!

Your answer is...-1.22803363764 !

Step-by-step explanation:

BUT TO MAKE IT MORE PRECISE, YOUR ANSWER SHOULD BE ROUNDED TO 2 Decimal Places WHICH MAKES IT... -1.23!

HOPE THIS HELPS!

3 0
3 years ago
Answer this correctly I’ll give brainalist + 10 points
Ganezh [65]

the sum of supplementary angles is 180 degree

therefore

x +2x = 180°

3x = 180

X = 180/3 = 60°

the value of X is 60°

5 0
3 years ago
A grid of 100 squares shows 7 shaded squares what decimal number is represented
svp [43]

0.07

Step-by-step explanation:

This is because 7/100 is 7% and as a decimal is 0.07

Make me Brainlist

6 0
3 years ago
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