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VikaD [51]
2 years ago
8

Rosa is attending an event where prizes are being given away. The probability of winning a T‐shirt is 0.89 and the probability o

f winning a $20 gift certificate is 0.05. Which statement correctly describes the chances of Rosa winning a T‐shirt or a $20 gift certificate? It is very likely that Rosa wins both prizes.
Mathematics
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:

It is very likely that Rosa wins both prizes.

Step-by-step explanation:

The probability of winning a T‐shirt is 0.89 and the probability of winning a $20 gift certificate is 0.05. Which statement correctly describes the chances of Rosa winning a T‐shirt or a $20 gift certificate?

We have these three possibe outcomes.

Win t-shirt(0.89 probability) and lose the gift certiciate(1 - 0.05 = 0.95 probability)

Lose t-shirt(0.11 probability) and win the gift certiciate(0.05 probability).

Win both.

So

p = 0.89*0.95 + 0.11*0.05 + 0.89*0.05 = 0.8955

0.8955 = 89.55% probability of Rosa winning a T‐shirt or a $20 gift certificate, which is considered a very likely probability. So the answer is:

It is very likely that Rosa wins both prizes.

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Work out the percentage change when a price of £40 is increased to £70.
Stella [2.4K]

Answer:

75%

Step-by-step explanation:

70-40 = 30

30/40 = 0.75

0.75 = 75%

6 0
3 years ago
Find the Area of a square with length(x + 7) and width (x + 7)
ValentinkaMS [17]

Answer:

x^2 +14x+49

Step-by-step explanation:

Area = length * width

        = ( x+7) * ( x+7)

       FOIL

    first: x^2

    outer: 7x

   inner: 7x

    last: 7*7 = 49

Add them together

x^2 +7x+7x + 49

Combine like terms

x^2 +14x+49

8 0
2 years ago
What is the vertex form of the function y = x2 + 8x – 3
bezimeni [28]
The answer would be




y=(x+4)^2−19
7 0
3 years ago
Read 2 more answers
PLSSS I NEED THE ANSWER
BabaBlast [244]

Answer:

1. 6.4 meters of streamers left to make pompoms

2. He will be able to make 8 pompoms

Step-by-step explanation:

1.

4 x 1.6 = 5.6 meters were used to make decorations.

Then we do 12 - 5.6 = 6.4

2.

per one pompom it takes 0.8 meters of streamers.

6.4 is the left over so we do

6.4 divided by 0.8 = 8 pompoms you can make

6 0
2 years ago
SOMEONE PLEASE HELP!
prisoha [69]

Answer:

XY=16.2

Step-by-step explanation:

It is given that the two figures are similar. This means that the ratio between the corresponding sides is equal. In essence, a side in the larger figure over its corresponding side in the smaller figure is equal to another side in the larger figure over its corresponding side in the smaller figure. Therefore, one can set up a proportion and solve to find the unknown side.

\frac{WX}{ST}=\frac{XY}{TU}

Substitute,

\frac{18}{3}=\frac{XY}{2.7}

Simplify,

6=\frac{XY}{2.7}

Inverse operations,

6=\frac{XY}{2.7}

6(2.7)=XY\\\\16.2=XY

8 0
2 years ago
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