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sattari [20]
3 years ago
6

What is 2x plus 21 divided by 2 equals x plus 7?

Mathematics
2 answers:
AlexFokin [52]3 years ago
7 0
ANSWER: x=-7/2

Solution:

2x+21/2=x+7

x+21/2=7

x=7-21/2

x=-7/2
Anna71 [15]3 years ago
5 0

Answer:

-3.5

Step-by-step explanation:

2x+21/2=x+7

2x + 10.5 = x + 7

-x               -x

x + 10.5 = 7

      -10.5   -10.5

x = -3.5

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Inductive reasoning or deductive reasoning:
Nat2105 [25]

Answer:

no

Step-by-step explanation:

Example:

  • 9 is an odd number, but 9 can be divided by 3, so 9 is not a prime number.

  • 49 is an odd number, but 49 can be divided by 7, so 49 is not a prime number.
5 0
3 years ago
What is the sum of 7.8 and 7.02
Neporo4naja [7]
The sum of 
7.8 and 7.02 would be 
14.82

because 
  7.8 
+7.02
------------
14.82


hope this helps :)  



4 0
3 years ago
Read 2 more answers
Se tiene la sucesión 3, 8, 13, 18, 23 … ¿Cuáles son los siguientes dos términos y cuál es la regla general?
V125BC [204]

Respuesta:

28; 33

A (n) = 5n - 2

Explicación paso a paso:

A partir de los datos dados, 3, 8, 13, 18, 23…, podemos ver que cada valor sucesivo de la serie aumenta en 5;

Por lo tanto, los siguientes dos términos de la serie deberían ser:

23 + 5 = 28

28 + 5 = 33

La serie es una progresión aritmética:

Recuerde la fórmula general:

A (norte) = a + (norte - 1) d

Donde, a = Primer término = 3; d = diferencia común = 5

n = enésimo término

A (n) = 3 + (n-1) 5

A (n) = 3 + 5n - 5

A (n) = 5n - 2

6 0
3 years ago
At this rate, how much would 6 bagels cost?
dolphi86 [110]

Answer:

2 ½ dollars

Step-by-step explanation:

You take half of 5 and that makes 2 ½

6 0
2 years ago
They are 24 crayons in a box by 5,black, 3 white, 7 red, 2 yellow, 3 blue, and 4 green. what is the probability randomly choosin
Svetlanka [38]
\sf{ \frac{Total ~green~ marbles}{Total ~marbles} = \frac{4}{24}= \frac{1}{6}  }

So your answer is 1/6
3 0
3 years ago
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