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zloy xaker [14]
3 years ago
15

The probability that Sara wins a raffle is given by the expression n/n+3

Mathematics
1 answer:
aksik [14]3 years ago
5 0

Answer:

3/(n + 3)

Step-by-step explanation:

The given probability that Sara wins a raffle draw, P = n/(n + 3)

Given that the sum of all probabilities is 1, we get

The probability that Sara does not win, Q = 1 - P

Therefore;

Q = 1 - n/(n + 3) = (n + 3) - n/((n + 3) = 3/(n + 3)

The probability that Sara does not win, Q = 3/(n + 3)

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Brooke purchased a new pair of tennis shoes that cost x dollars. Her brother, Benji, purchased a new pair of shoes that cost 20%
hoa [83]

Answer(s):

  • x + 0.2x
  • 1.2x

Solution:

<u>We know that:</u>

  • Brookie = x dollars
  • Benji = x + (20% × x)

<u>Solution:</u>

To see which expression has been used, we will need to simplify the expression.

  • Benji = x + (20% × x)
  • => Benji = x + (20/100 × x)
  • => Benji = x + (2/10 × x)
  • => Benji = x + (0.2 × x)
  • => Benji = x + (0.2x)
  • => Benji = x + 0.2x
  • => Benji = 1.2x

Looking at the options, Option A and Option B matches with our result.

Option A and B are correct.

8 0
2 years ago
one third of the sum of two angles is 60 degree and one quarter of their difference is 28 degree. find the two angles
vlabodo [156]
1/3(a + b) = 60
a + b = 60 * 3 = 180

1/4(a - b) = 28
a - b = 28 * 4 = 112

a + b = 180
a - b = 112
---------------add
2a = 292
a = 292/2
a = 146

a + b = 180
146 + b = 180
b = 180 - 146
b = 34

so ur 2 angles are : 146 and 34
7 0
4 years ago
You have $30 to buy muffins. However, at the shop you can only buy 1 muffin for $4.
choli [55]
4x ≤30 where x is the quantity of muffins b) The greatest amount of muffins you can purchase is 7. c) 2dollars


hope this helps!
4 0
3 years ago
Which of the following is
emmainna [20.7K]
B.13.1 that’s the answer




(:
8 0
4 years ago
ANSWER QUICKLY PLEWSE FOR BRAINLIEST
photoshop1234 [79]
Angle 3:
62+47=109
All angles in a triangle add to 180 degrees, so 180-109= 71 degrees
Angle 2:
Angles in a straight line always add to 180 degrees too,
so 180-62= 118 degrees
Angle 1:
Again, angles in a triangle add to 180,
so 180-22-118= 40 degrees

Angle 1: 40
Angle 2: 118
Angle 3: 71
Hope that helps :)
6 0
3 years ago
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