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Sphinxa [80]
4 years ago
15

Denise is checking to determine if the expressions x+x+6 and 4+3x-2 are equivalent. When x=4, she correctly found that both expr

essions have a value of 14.
When x=2, she correctly evaluated the first expression to find that x+x+6=10. What is the value of the second expression when x=2, and are the two expressions equivalent?
Mathematics
2 answers:
Dafna1 [17]4 years ago
8 0

Answer:

Value of  the second expression when x=2 is:

8

and the two expressions are not equivalent

Step-by-step explanation:

Value of the expression 4+3x-2 at x=2 is:

=4+3×2-2

=4+6-2

=8

Hence, value of  the second expression when x=2 is:

8

Hence, two expressions are not equivalent

(since, their value at x=2 is different)

gayaneshka [121]4 years ago
3 0
The answer would be 8 when the value of x = 2
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The perimeter of a rectangle is 60. The length is twice the width. Find the length and width.
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Step-by-step explanation: Our first task in this problem is to setup variables representing <em>length</em> and <em>width</em> and we do that by using the second sentence.

<em><u>The length is twice the width</u></em>

So if we call our width <em>x</em>, that means that our length is 2 times <em>x</em> or 2x

Width of the rectangle ⇒ <em>x</em>

Length of the rectangle ⇒ <em>2x</em>

Before moving on, go ahead and draw a picture of your

rectangle so that you can visualize what's going on.

I have done this for you below.

We label our widths <em>x</em> and our lengths <em>2x</em>.

Now we can use the first sentence to setup our equation.

The perimeter of a rectangle is the distance

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So if our perimeter is 60, that means that x + x + 2x + 2x = 60.

Simplifying by combining like terms, we get 6x = 60.

Now dividing both sides by 6, we find that <em>x = 10</em>.

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8 0
3 years ago
Lorene's employer pays her $8.50 per hour plus an additional $45 per week. Lorene would like to earn enough money to purchase a
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Answer:

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3 0
3 years ago
Mark rolls 2 fair dice and adds the results from each.
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Answer:

P ( X > 5 ) = 72,2 %

Step-by-step explanation:

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If dice 1 outcome is 5  we also have  6 outcomes

If dice 1  outcomes is 4 we have 5 positive outcomes

If dice 1  outcome is 3  we have 4 positive outcomes

If dice 1  outcome is 2  we have 3 positive outcomes

if dice 1  outcome is 1  we have 2 positive outcomes

Total evaluating dice 1: positive outcomes 26

We will get the sames results analysing  dice 2 then we have a total of

52 successful events

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Then

P ( X > 5 ) = 52/72  

P ( X > 5 ) = 0,722    

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7 0
3 years ago
A caterer prepared a turkey that weighed 27 1/2 pounds. Each serving of turkey will be 1/3 pound. How many whole servings will t
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Answer:

82.5000001 Close to around this ( maybe .11 off)

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7 0
2 years ago
Read 2 more answers
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