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Stella [2.4K]
3 years ago
8

Expand & simplify 2 ( b + 4 ) + 5 ( b − 3 )

Mathematics
1 answer:
Usimov [2.4K]3 years ago
8 0

Answer:

7b - 7

Step-by-step explanation:

You can use distributive property which is x (a + b) = x*a + x*b and x (a - b) = x*a - x*b. Therefore, the expression is 2*b + 2*4 + 5*b - 5*3 which is:

2b + 8 + 5b - 15, which is, if you combine like terms:

7b - 7

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Answer:

2 3/4 dozen cookies per hour

Step-by-step explanation:

To find his unit rate per hour, divide 5 1/2 by 2:

5.5/2

= 2.75 or 2 3/4 dozen cookies

So, his unit rate in dozen cookies per hour is 2 3/4

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3 years ago
Maria so 20 shares of stock for a total of 2980 what was the value of one
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Determine if the following system of equations has no solutions, infinitely many
DochEvi [55]

Answer:

There is one solution

Step-by-step explanation:

2x + y = -1

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Then add the equations together to eliminate x

-8x -4y = 4

8x + 3y = -2

--------------------

   -y = 2

Multiply by -1

y =-2

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Add 2 to each side

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8 0
3 years ago
The function f(x) is shown in the graph.
anzhelika [568]

The function that describes the graph is an exponential function

<h3>How to determine the function type?</h3>

From the graph, we have the following highlights:

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3 0
2 years ago
James is six years older than lousie. Eight years from now, James will be 4 times older than loise was 4 years ago. What is the
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Answer: 26 years.

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Eight years from now, James's age = x+6+8= x+14

4 years ago, Louise's age = x-4

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hence, the sum of the current ages is 26 years.

8 0
3 years ago
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