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serg [7]
4 years ago
14

Steve has 20 marbles in a bag, all the same size and shape. There are 8 red,

Mathematics
1 answer:
adoni [48]4 years ago
3 0
50/50 chance of getting a yellow marble.

Explanation:

There are 10 yellow marbles in the bag, and the other half are other colors. This would create a 50/50 ratio.

I am honestly super rusty with probability but oh well...
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The store sells 6 boxes of cupcakes $18. How much does 10 boxes of cupcakes cost?
kondaur [170]

Answer:

$30

Step-by-step explanation:

6 box = 18

1 box = 3

10 box = 30

4 0
3 years ago
Find the vertex and axis of symmetry for f(x)=2x^2-1
vfiekz [6]
<h3>Axis of symmetry is 0 and vertex is (0, -1)</h3>

<em><u>Solution:</u></em>

<em><u>Given is:</u></em>

f(x) = 2x^2 - 1

We have to find the vertex and axis of symmetry

<em><u>The general equation is given as:</u></em>

f(x) = ax^2 + bx + c

Comparing with given equation,

a = 2

b = 0

c = -1

<em><u>The axis of symmetry is given as:</u></em>

x = \frac{-b}{2a}

x = \frac{0}{2(2)}\\\\x = 0

Thus axis of symmetry is 0

The x coordinate of the vertex is the same

x coordinate of the vertex = 0

h = 0

The y coordinate of the vertex is:

k = f(h)

k = f(0)

f(0) = 2(0) - 1\\\\f(0) = 0 - 1\\\\f(0) = -1

Thus, y coordinate of the vertex is -1

Therefore, vertex is (0, -1)

3 0
3 years ago
Which statements are true about the multiplication and division properties of rational expressions? Check all that apply. The cl
natka813 [3]

Answer:

The correct options are:

  • The closure property of multiplication states that the product of two rational expressions is a rational expression.
  • The commutative property only holds true for the multiplication of rational expressions.
  • The properties of rational expression multiplication and division are parallel to the properties of rational number multiplication and division.

Step-by-step explanation:

We know that if a and b are two rational expression than :

Closure property of multiplication states that:

            a.b is also an rational expression.

Commutative property under multiplication is given by:

               a.b=b.a

The commutative property holds only under multiplication and not division since, if a=0 then,

a/b=0

but b/a is not defined.

Also, the property of rational expression are parallel to the properties of rational number.

3 0
4 years ago
Read 2 more answers
Write an expression for the operation described below. the product of w and v
Bond [772]

Hey there!

One expression that represents the product of w and v is w x v.

This is because when you are looking for the product of something, you multiply.

Hope this helps!

4 0
3 years ago
Simplify: 1/5(-16-9) + 4^2 ÷8​
enot [183]

Answer:

-3

Step-by-step explanation:

you start with the parentheses -16-9 turns into -16 + (-9)

and then you try to solve everything.

8 0
3 years ago
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