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Goshia [24]
3 years ago
14

Needing help stuck on this.

Mathematics
1 answer:
Verdich [7]3 years ago
3 0

Answer:

71

Step-by-step explanat

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At a certain charity fundraiser, some guests will be randomly selected to receive a gift. The probability of receiving a gift is
mixas84 [53]

Answer:

a) Your answer for part a (I got 3/28) is wrong.

Odds are always expressed as ratios after calculating. Therefore, the odds in favour of receiving a gift = 3:22

b) Your answer in part b(I got 7/9) is correct.

The probability of the box having a toy is 7/9.

Step-by-step explanation:

The question above has to do with odds and probability.

It is important to note that odds are expressed in the form of ratios while probabilities are expressed as fractions.

a) At a certain charity fundraiser, some guests will be randomly selected to receive a gift. The probability of receiving a gift is 3/25. Find the odds in favor of receiving a gift.(I got 3/28)

The formula for calculating odds from probability is Odds = Probability / (1 - Probability).

Probability = 3/25

Odds =(3/25)/(1 - 3/25)

= (3/25)/22/25

= 3/25 ÷ 22/25

= 3/25 × 25/22

= 3/22

Note that odds are always expressed as ratios.

Therefore, the odds in favour of receiving a gift = 3:22

Your answer for part a (I got 3/28) is wrong.

The correct answer is 3:22

b) A child has a box of candies which might have a toy inside. The odds against the box having a toy are 7/2. What is the probability of the box having a toy? I got 7/9.

The formula for calculating probability from odds is P = Odds / (Odds + 1).

Odds = 7/2 or 7:2

We convert the odds to fraction when calculating

Probability = Odds / (Odds + 1).

Probability = (7/2)/ (7/2 + 1)

Probability = (7/2)/9/2

Probability = 7/2 ÷ 9/2

= 7/2 × 2/9

= 7/9

Probability is always expressed as a fraction.

Therefore, the probability of the box having a toy is 7/9.

Your answer in part b(I got 7/9) is correct.

8 0
3 years ago
Jade invested in the stock market. The weekly change in value of her stock, in dollars, over 4 weeks was +23.65, -22.20, -12.75
Anastasy [175]

Answer:

<h3>The average weekly change in value of Jade's stock in dollars is -1.3225</h3>

Step-by-step explanation:

Given that Jade invested in the stock market.

The weekly change in value of her stock, in dollars, over 4 weeks was +23.65, -22.20, -12.75 and +5.98.

<h3>To find the  average weekly change in value of her stock in dollars :</h3>

The average weekly change in value of Jade's stock is given by Average=\frac{sum of the weekly changes in value of her stock in dollars}{total number of weeks}

Average=\frac{23.65+(-22.20)+(-12.75)+5.98}{4}

=\frac{23.65-22.20-12.75+5.98}{4}

=\frac{29.63-34.92}{4}

=\frac{-5.29}{4}

=-1.3225

Therefore Average=-1.3225

<h3>Therefore the average weekly change in value of Jade's stock in dollars is -1.3225</h3>
5 0
3 years ago
Increase £120 by 25%​
alekssr [168]
120 * 0.25 = 30
120 + 30 = £150
6 0
3 years ago
Evaluate the expression for the given values 5x + 3y when x=3 and y = 5
Leni [432]

Answer:

30

Step-by-step explanation:

Using the substitution method

5(3) + 3(5) =

15 + 15 = 30

7 0
3 years ago
The following chips are placed in a bucket: 1 red, 4 yellow, 3 blue, and 5 green. One chip is randomly selected from the bucket.
Serhud [2]

Answer:

38% or .38

Step-by-step explanation:

I think

3 0
2 years ago
Read 2 more answers
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