There are six purple marbles and four pink marbles in a box. What is the probability of Elsa picking a pink marble out the box?A. 4 out of 10
B. 1 out of 4
C. 4 out of 6
D. 5 out of 10
E. 1 out of 10

Answer:

b=3

c=5

Step-by-step explanation:

b(3x^{2}-2x+c) = 9x^{2} - 6x+15

Distribute

3b x^2 -6x +bc = 9x^2 -6x +15

Each term must be equal

3bx^2 = 9x^2

3b = 9

Divide by 3

3b/3 = 9/3

b =3

bc = 15

3c =15

Divide by 3

3c/3 = 15/3

c =5

Part (a)  We shall simplify both of them in order to find the solution to the equation.

• Once we've done that, we'll see that they have the same equation, so we can match the equation if x=10.

Part (b)  When x=-1/2, the answers to the second expression, 2x2, change to -1, and we eventually arrive in 1.

• This is why the expressions are not equal at this point.

Part (c)  As we can see, the expressions are identical, thus we can demonstrate that they are equal if x is any number other than -1/2.

What is an expression in maths?

• An expression is a set of terms combined using the operations +, – , x or , for example 4 x − 3 or x 2 – x y + 17 .
• An equation states that two expressions are equal in value, for example 4 b − 2 = 6 .
• An identity is a statement that is true no matter what values are chosen, for example 4 a × a 2 = 4 a 3 .

What is a math expression example?

• An expression is a set of numbers or variables combined using the operations +, –, × or ÷.
• Arithmetic expression that contains only numbers and mathematical operators and algebraic expression that contains variables, numbers and mathematical operators.

How do you find expressions?

• To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number.
• To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.

Learn more about expressions here:

brainly.com/question/723406

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Answer:

Part a)  In order to solve the equation, we will simplify both of them.  Once we do that, if we notice, they are the same equation, so therefore, if x=10, then we will be able to match the equation.

Part b) The reason the expressions are not equal when x=-1/2 is because if we see, that in the second expression, 2x^2, if x=-1/2, then the answer becomes -1, and we eventually end up with 1.

Part c)  As we can see, the expressions are the same, so if x is any number other than -1/2, then we will be able to show that the expressions are equal.

Step-by-step explanation:

You can simplify the explanation, also if you play ROBLOX, follow me at my username: BAMUNJI, or 24KBlingYT

By the way, this question is from the Art of Problem Solving, and you should not just copy answers or copy of them.

Answer:

A=11/12

Step-by-step explanation:

1/3+a=5/4

1/3+a-1/3=5/4-1/3

1/3+a-1/3

5/4-1/3 11/12