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Lelechka [254]
2 years ago
5

You are rolling two dice at the same time. What is the probability of rolling a sum of 5 or 9?

Mathematics
2 answers:
baherus [9]2 years ago
8 0
You can get a 5 by rolling :
1 and 4
2 and 3
3 and 2
4 and 1

You can get a 9 by rolling :
3 and 6
4 and 5
5 and 4
6 and 3

There are 36 possible outcomes, hence your probability is \frac{4\cdot2}{36}=\boxed{\frac29}
oksian1 [2.3K]2 years ago
8 0

Answer:

C

Step-by-step explanation:

To find the probability we use the mutually exclusive probability formula P(A) + P(B). The probability of getting a sum of 5 is  

1 /9

and the probability of getting a sum of 9 is  

1 /9

. The sum is  

2 /9

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3 years ago
Write an expression for the following situation and solve. Mr. Simms bought 20 pencils. He used 1/4 of the pencils and then gave
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Hi! 
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3 years ago
Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 7x − 1). If the final answer is written in the form Ax2 + Bx + C, wha
Andrews [41]

Answer:

 

3x + 2x2 + 4 = 5

3x + 2x2 + 4 – 5 = 5 – 5

First be sure that the right side of the equation is 0. In this case, all you need to do is subtract 5 from both sides.

 

3x + 2x2 – 1 = 0

2x2 + 3x – 1 = 0

Simplify, and write the terms with the exponent on the variable in descending order.

 

2x2

+

3x

–

1

=

0

↓

 

↓

 

↓

 

 

ax2

 

bx

 

c

 

 

 

a = 2, b = 3, c = −1

 

Now that the equation is in standard form, you can read the values of a, b, and c from the coefficients and constant. Note that since the constant 1 is subtracted, c must be negative.

Answer

2x2 + 3x – 1 = 0; a = 2, b = 3, c = −1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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