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marissa [1.9K]
3 years ago
14

Simplify each expression 3x+5+7x

Mathematics
2 answers:
Vadim26 [7]3 years ago
7 0

Answer:

10x+5

Step-by-step explanation:

Combine 3x+7x = 10x

5 doesn’t have a variable so u can’t add it with anything so it’s 10x+5

stepan [7]3 years ago
6 0

Answer:

10x+5

Step-by-step explanation:

You would add 3x and 7x

you would leave 5 alone because it has no x thus it can not be added to the 3x and 7x

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The price of a​ four-star meal, only ​$5050 per couple decades​ ago, has since increased 400400​%. The current price of a​ four-
Vikentia [17]

Answer:

The correct answer is C.

Step-by-step explanation:

The price of a​ four-star meal, only ​$50 per couple decades​ ago, has since increased 400%.

This means that if the $50 per couple is 100%(decimal 1), the current price is 100%+400% = 500%(decimal 5). So we can solve a rule of three to find the current price of a four-star meal.

1 - 50

5 - x

x = 50*5

x = 250.

The current price of a four star meal is $250 per couple.

The correct answer is C.

3 0
3 years ago
If y = kx, what is the value of k if y = 20 and x = 0.4? A) 5 B) 8 C) 9.6 D) 50
Margaret [11]
Answer: D, 50
y = kx          <span>y = 20 and x = 0.4
</span>
What you will do: You will plug in your y and your x.
Your equation should look like: 20=k(0.4)
Next: What you will do is divide each side of your equal sign by 0.4 so you will get your k alone.
You would get: k=50

HOPE THIS HELPS! ^_^
  
7 0
3 years ago
HELPPPPPPPP ASAPPPPP:
lina2011 [118]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
Miguel has triple David's money, while Lisbeth has ten dollars less than David. The sum of their money totals $95. How much mone
ahrayia [7]

Answer:

Miguel has $63

Lisbeth has $11

David has $21

Step-by-step explanation:

let Miguel share be M

let Lisbeth share be L

let David share be D

from the question, we know that

M=3D

L=D-10.

M+L+D=95

thus,

3D+(D-10)+D= 95

3D+D-10+D= 95

5D-10 = 95

5D= 95+10

5D= 105

D= 105/5

D= 21.

thus,

M = 3D = 3×21

= $63

L = D-10 = 21-10

= $11

(63+21+11)$ = $95

3 0
3 years ago
I NEED YOUR HELP!!<br> What is 2 + 3x8
Gemiola [76]

Answer:

Don't need Help don't depend on others do you'r work by yourself why you came to this world for asking help from other not do your work by yourself.Today I am going to help but from tomorrow you have to do by yourself

Step-by-step explanation:

=2x+3x8

=add

=5x8

=x=5=8/2

=x=5/4 is your answer

4 0
3 years ago
Read 2 more answers
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