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professor190 [17]
3 years ago
7

There are 38 students in Mr. Reynolds math class and 20 are boys.If a student is selected at random what is the probability that

a girl is selected?Give the answer as a fraction in simplest form.
Mathematics
2 answers:
lesantik [10]3 years ago
8 0

Answer:

9/20

Step-by-step explanation:

damaskus [11]3 years ago
5 0

Answer:

9/19

Step-by-step explanation:

if 20 students are boys, then the remaining students are girls. 38-20 = 18

There are 18 girl students.

18/38 can be simplified to 9/19

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a chess player played 136 games total. If he won 56 of the games, what is the ratio of games he lost to games he won?​
wolverine [178]

Answer:

80:56

Step-by-step explanation:

if you do 136-56, you get 80. therefore the number of games lost is 80. you already know he won 56, so the ratio is 80:56.

5 0
3 years ago
Suzie went to a candy shop. The candy shop has a sign that shows the cost of the candies at the shop. The sign is below:
aleksklad [387]

Answer:

$8.50

Step-by-step explanation:

Multiply the cost by the amount of candy she bought, your equation will look like this:

2(0.75) + 3(1) + 5(1.40)

Multiplying everything makes the equation into:

1.5 + 3 + 7

Adding everything makes the total cost 11.50.

Subtract 11.50 from 20, and the answer is 8.50

6 0
3 years ago
7- Simplify each expression.<br> -8+2(-5)
postnew [5]

Answer:

-18

Remember PEMDAS.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Identify whether the expressions are equivalent or not equivalent: 7y – 15 + 2y and 9y - 15
Doss [256]

Answer:

Yes, the two expressions are equivalent

5 0
3 years ago
Help Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Kamila [148]

Answer:

x = 80°

Step-by-step explanation:

Angle on a straight line = 180°

(x + 40)° + (x - 20)° = 180°

x + 40° + x - 20° = 180°

2x + 20° = 180°

2x = 180° - 20°

2x = 160°

x = 160°/2

x = 80°

Check:

(x + 40)° + (x - 20)° = 180°

(80° + 40°) + (80° - 20°) = 180°

120° + 60° = 180°

180° = 180°

3 0
3 years ago
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