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Masja [62]
2 years ago
6

You randomly draw a marble from a bag of marbles that contains 3 blue marbles, 4 green marbles, and 5 red marbles. What is P(dra

w a blue marble)? If necessary, round your answer to 2 decimal places
Mathematics
1 answer:
Oliga [24]2 years ago
7 0

Answer:

P(blue) = .25

Step-by-step explanation:

We need to know how many marbles in the bag

3 blue marbles+ 4 green marbles+ 5 red marbles = 12 marbles

P ( blue) = blue / total = 3/12 = 1/4 = .25

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Add the polynomials together:
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Combine like terms:
(5x+2x+4x) + (-2+-3+3) = 11x-2

So the answer is D.
8 0
3 years ago
6 * ( 12 - 7.5 ) - 7
Paladinen [302]

Answer: 20

Explanation: Alright, so basically you’re going to want to use PEMDAS (Parenthesis, Exponents, Multiplication/ Division, Addition/ Subtraction)

* just means multiply.. sooo the problem looks like this:

6x(12-7.5)-7

We’ll start at the parentheses :)

So (12-7.5) = 4.5

Now our problem looks like: 6x(4.5)-7

Following PEMDAS, the next thing to come up is multiplication! So we’re going to multiply 6 by 4.5 ...

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After this our problem looks like: 27-7

So now it’s just simple math...

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5 0
3 years ago
Read 2 more answers
4. La figura se muestra un armazón arqueado de 50 metros de longitud con las alturas indicadas. Los "tirantes" verticales están
tatiyna

Step-by-step explanation:

verticales están a 12 metros uno del otro. Si tanto la parte superior como la inferior del arco son arcos de parábola, redondeo hasta el metro más cercano la suma de longitudes de los tirantes verticales e inclinados.

4 0
3 years ago
Find the sum and simplify
statuscvo [17]

<u>Answer</u>:

[ ( 2 x^2 - x - 5 ) ] / [ ( x + 2 ) ( x - 3 ) ]

option c). is correct.

<u>Step-by-step explanation</u>:

( x + 1 ) / ( x + 2 ) + ( x - 1 ) / ( x - 3 )

= > [ ( x + 1 ) ( x - 3 ) + ( x - 1 ) ( x + 2 ) ] / [ ( x + 2 ) ( x - 3 ) ]

= > [ ( x^2 - 3 x + x - 3 + x^2 + 2 x - x - 2 ) ] / [ ( x + 2 ) ( x - 3 ) ]

= > [ ( 2 x^2 - x - 5 ) ] / [ ( x + 2 ) ( x - 3 ) ]

Hence we get required answer!

6 0
2 years ago
Translate into an algebraic expression.
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This will have no equal sign because that is what an expression is. The sentence translated into numbers is:


<h3>(x-10)(x)</h3>
3 0
3 years ago
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