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IrinaK [193]
4 years ago
14

Simplify the expression 5+4+2(-3)+7+(-5)

Mathematics
1 answer:
liberstina [14]4 years ago
4 0
Just use pemdas
(Parenthesis, exponents, multiplication, division, addition, subtraction)
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What is the value of k and why
gayaneshka [121]

Answer:

b is the answer

Step-by-step explanation:

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3 years ago
Please help immediately
goldfiish [28.3K]

Answer:

The probability of rolling a 3 and then a 5 is 1/36.

Step-by-step explanation:

Rolling a six sided die is an independent event.  That means for each roll, you have the same chance of rolling a number as the previous roll.  Since there are six different numbers on a die, then there are six different outcomes for each roll - 1, 2, 3, 4, 5 or 6.  The chances that you would roll a '3' is 1 out of 6, or 1/6.  The chances that you would roll a '5' is also 1 out of 6, or 1/5.  However, when we combine these events, we need to take each probability and multiply them.  So, the probability of rolling a '3' and then a '5' is 1/6 x 1/6 or 1/36.  

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3 years ago
If 217 shoppers out of 1000 were female, how many shoppers out of 100 would be female?
9966 [12]
21.7 so you would probably round down too 21 because you can't have 0.7 of a person 
8 0
3 years ago
7. There are 19 red marbles for every black marble. If there are 120 marbles in the bag, how many red marbles are there? Explain
boyakko [2]

Answer:

114 marbles.

Step-by-step explanation:

Let the number of red marbles be r

Let the number of black marbles be b

<u>Given the following data;</u>

Total number of marbles = 120

Translating the word problem into an algebraic equation, we have;

r = 19b .......equation 1

r + b = 120 ........equation 2

Substituting the value of "r" into equation 2, we have;

19b + b = 120

20b = 120

b = \frac {120}{20}

b = 6 marbles.

To find the number of red marbles;

From equation 1;

r = 19b

Substituting the value of "b" into equation 1, we have;

r = 19*6

<em>r = 114 marbles.</em>

<em>Therefore, there are 114 red marbles in the bag. </em>

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3 years ago
Which point is not on the graph of the equation y = x2 + 3x - 5. A.(2,5)
wel

Answer:C

Step-by-step explanation:

7 0
3 years ago
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