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Anni [7]
2 years ago
14

Decide if the expressions in each pair are equivalent. Explain how you know.

Mathematics
2 answers:
lilavasa [31]2 years ago
7 0

Answer:

x + x + x + x is the same as 4x

because its "x four times"

5x and x+5 are not the same because x+5 in not "x five times"

5x is 5 multiplied by x.

x + 5 is 5 added to x.

Lera25 [3.4K]2 years ago
5 0

Answer:

1) 4x and x+x+x+x are equal

2) 5x and x + 5 are not equal

Step-by-step explanation:

1) 4x is essentially 4 x , which is x + x + x + x

2) 5x is equal to 5 x , not x + 5

Hope this helps. If you have any questions, let me know.

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On a certain hot​ summer's day, 477 people used the public swimming pool. The daily prices are 1.50 for children and 2.25 for ad
Akimi4 [234]

Answer:

212 children, and 265 adults

Step-by-step explanation:

To find the number of children and adults, we can set up a systems of equations.

x= number of children

y= number of adults

Equation 1: Price

1.50x+2.25y=914.25

Equation 2: Total number of people

x+y=477

Now, let's solve the equation using substitution.

Rearrange the second equation to solve for one variable.

x+y=477

x=477-y

Now plug x equals into the first equation, and solve for y.

1.50x+2.25y=914.25

1.50(477-y)+2.25y=914.25

715.5-1.50y+2.25y=914.25

715.5+0.75y=914.25

0.75y=198.75

y=265

We just solved for the number of adults. Now let's plug y equals into the second equation to find the number of children.

x+y=477

x+265=477

x=212

7 0
2 years ago
Can someone please help me with this problem?
Vedmedyk [2.9K]

Answer: -13

Step-by-step explanation:

c-2y

= -5-2(4)

= -5 - 8

= -13

5 0
3 years ago
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Hlo sir i am laavanya how are you​
Monica [59]

Answer:

thanks for free point Mark me as brain list

6 0
3 years ago
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A word processing program requires a user to enter a 7-digit registration code made up of the digits 1,2,4,5,6,7 and 9. Each num
ahrayia [7]
For the first digit there are 7 choices. For the second digit there are 6 choices (because we can't use the same one again). And so on, until there is only one choice for the last digit.

The number of possible codes is this:
7*6*5*4*3*2*1 = 7! = 5040
6 0
3 years ago
Convert 11000 milligrams into pounds. Round your answer to the nearest hundredth.
LekaFEV [45]

Answer:

0.02

Step-by-step explanation:

hope this is correct!!

7 0
3 years ago
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