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MakcuM [25]
3 years ago
8

Evaluate m^2 − 2m + 5 for m = − 2

Mathematics
2 answers:
Simora [160]3 years ago
4 0

Answer:

\huge\boxed{13}

Step-by-step explanation:

m²-2m + 5

Given that m = -2

\sf (-2)^2-2(-2)+5\\4 +4 + 5\\13

Advocard [28]3 years ago
3 0

Answer:

13

Step-by-step explanation:

m^2 − 2m + 5

Let m = -2

(-2)^2 -2(-2) +5

4 +4 +5

13

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a recipe calls for a total of 3 2/3 cups of flour and sugar. it the recipe calls for 1/4 cup of sugar, how much flour is needed?
zavuch27 [327]

Answer:

This is very detailed as I wish to make some principles about fractions clear.

3

5

12

Explanation:

This question boils down to  

3

2

3

−

1

4

A fractions structure is that of:

count

size indicator of what you are counting

→

numerator

denominator

You can not directly add or subtract the counts (numerators) unless the size indicators (denominators) are the same.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Consider  

3

2

3

Write as  

3

+

2

3

Multiply by 1 and you do not change the value. However, 1 comes in many forms so you can change the way something looks without changing its true value

[

3

×

1

]

+

2

3

[

3

×

3

3

]

+

2

3

 

9

3

   

+

2

3

 

=

 

11

3

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Putting it all together

3

2

3

−

1

4

 

→

 

11

3

−

1

4

But the size indicators are not the same. I chose to make them become 12

11

3

−

1

4

 

→

 

[

11

3

×

1

]

−

[

1

4

×

1

]

               

→

 

[

11

3

×

4

4

]

−

[

1

4

×

3

3

]

               

→

     

44

12

     

−

 

3

12

Now we may subtract the counts

               

→

 

44

−

3

12

 

=

 

41

12

But this is the same as  

12

12

+

12

12

+

12

12

+

5

12

                         

=

 

1

2

+

2

1

2

+

2

1

2

+

5

12

 

=

 

3

5

12


Step-by-step explanation:


5 0
2 years ago
Read 2 more answers
(5v +37v2 - 80v - 69)/(v+9)
valina [46]

Answer:

-67-80v

Step-by-step explanation:

hope this helps!

3 0
3 years ago
It's due in 30 minutes!!
Dominik [7]

Answer:

14 cups = 7 pints

144 cups = 36 quarts

Step-by-step explanation:

4 0
3 years ago
Help please thankssssds
iVinArrow [24]
I can’t see the pic , im so sorry
3 0
2 years ago
An item that is on sale for 40% off costs $66. What was the item's regular price?
IRINA_888 [86]
  • <em>Answer:</em>

<em>The regular price was $110</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em />

<em>60% .......... $66</em>

<em>100% ..........$ x</em>

<em>x = 100×66/60</em>

<em>=  6600/60</em>

<em>= $ 110</em>

<em />

<em>Good luck !</em>

7 0
3 years ago
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