1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alisha [4.7K]
3 years ago
8

Al sumar y/o restar números decimales, siempre se debe aplicar la norma de los signos. * 1 punto FALSO VERDADERO

Mathematics
1 answer:
Luden [163]3 years ago
7 0

Answer:

La norma de los signos es para el producto de números reales, y la norma es la siguiente.

(+)*(+) = (+)

(+)*(-) = (-)

(-)*(+) = (-)

(-)*(-) = (+)

Es decir, el producto de dos números de mismo signo es siempre positivo

El producto de dos números de distinto signo es siempre negativo.

Particularmente, para la suma esta norma no funciona (pues no está definida para la suma)

Pero en casos como:

5 - (-4)  

(esto sería: "la diferencia entre cinco y menos cuatro")

notar que podemos reescribir esto como:

5 + (-1)*(-4)

Ahora podemos aplicar la norma de los signos:

5 + 4 = 9

Donde aplicamos la norma de los signos,  

Podemos concluir que, si bien es una regla que aplica al producto, siempre la tenemos que tener en cuenta en cualquier operación que hagamos.

Por lo podemos concluir que la respuesta correcta es verdadero.

You might be interested in
a local parts shop buys a machine that costs $500,000. its value depreciates exponentially each year by 10%. what is the machine
jeka94
Hello!

Answer:

$295.295

Explanation:

Of the statement, we have that the price of the machine decreased 10% every year exponentially, so in the first year it real value drops to 90% of the costs. For 5 years, It can be expressed and simplified by the following equation:

We can't use that the percent drop as a percent itself, so we are going to divide 90% by 100%, and it will give us an entire number.

\frac{90}{100}=0,9 \\ \\ Value=Costs.(0.9)^{years}


By substituting we have:

Value=500000.(0.9)^{5}

Value: $295.245


Have a nice day!



8 0
3 years ago
Click on the photo to see it.
Lera25 [3.4K]

B is the midpoint

\\ \sf\longmapsto AB=\dfrac{1}{2}AC

\\ \sf\longmapsto 7x-3=\dfrac{5}{2}

\\ \sf\longmapsto 5=2(7x-3)

\\ \sf\longmapsto 5=14x-6

\\ \sf\longmapsto 14x=6+5

\\ \sf\longmapsto 14x=11

\\ \sf\longmapsto x=\dfrac{11}{14}

\\ \sf\longmapsto x=7.8

6 0
3 years ago
Read 2 more answers
Granny visited the Eiffel Tower. It is 324 meters tall. The Statue of Liberty is 93 meters tall. What is the ratio of the height
Nataly_w [17]

324 : 93

simplified:

108 : 31

5 0
3 years ago
How to find the area of a triangle with three points in 3d?
Otrada [13]
Again u just have to meaiuse
8 0
3 years ago
I have 1 apple I need 6 more to get to 7 so I pick 3 up eat 2 which picking up 4 more , how many apples do I have?
natita [175]

Answer:

6

Step-by-step explanation:

1+3=4  4-2=2  2+4=6

7 0
3 years ago
Read 2 more answers
Other questions:
  • I need the answer plz
    6·1 answer
  • How to write 0.326 in two other forms?
    9·1 answer
  • Which line is a linear model for the line?<br><br> 1. A<br> 2. B<br> 3. C<br> 4. D
    13·2 answers
  • Please check picture to see question <br><br><br> please help me
    9·1 answer
  • Write the series using summation notation. −3+4−5+6−7
    9·1 answer
  • The domain of f(x) is {-2,0,1}. If f(x) = 4x+1, what is the range?
    13·1 answer
  • MARKING BRANLIEST HELP PLSSS!!!! d
    6·1 answer
  • Solve the inequality 4(k − 5) + 12k ≥ −4
    15·2 answers
  • PLEASE HELP! <br> y = 2x − 1<br> y = 4x - 5<br> solve both :)
    14·1 answer
  • What is the ratio of blue paint to total paint in the mixture?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!