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s344n2d4d5 [400]
3 years ago
6

Simplify the expression.

Mathematics
1 answer:
lyudmila [28]3 years ago
5 0
Putting all the numbers with variables together, you get -2. you can see that it is subtracting a 7, that does not change.
Answer: D. -2a - 7
-3 + -5 = -8
-8 +6 = -2
-2a - 7
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Estimate the percent of the number. 86% of 82. <br><br>• A. 83<br>• B. 58<br>• C. 72<br>• D. 50​
Tju [1.3M]

Answer:

72

Step-by-step explanation:

82 x .86 = 70.52 Answer C. 72

7 0
3 years ago
a number multiplied by 4, add -4 to the product and then take 1/3 of the sum, the result is -6. find the number
matrenka [14]

Answer:

-7/2

Step-by-step explanation:

lets do math:

this looks pretty hard right,

so lets say our number is called x

this is our equation:

-6=(4x-4)1/3

divide -6 by 1/3 because why not

=-18

-18=4x-4

add 4 to both sides because im smart

-14=4x

divide both side by 4 because im smart again

x=-7/2

lemme check this because i make mistakes a lot.

im right

5 0
3 years ago
The amount that a bungee cord stretches varies directly with the weight that it holds. If a certain cord is stretched 12 in by a
Y_Kistochka [10]

Answer: 4.5 metres

Step-by-step explanation:

Using Hooke's Law ()

We need to find the spring constant of the bungee cord with the given extension and force, we can do this by substituting in known values.

Now we have found the spring constant of the bungee cord, we can substitute it in for the a different force. As the cord is the same we can use the same spring constant.

6 0
2 years ago
I WILL GIVE BEST RATINGGGG please help mee :)) its urgent (no links plsss)
mrs_skeptik [129]

Answer:

512

Step-by-step explanation:

each number is a sum of the two numbers in the row above it.

8 0
3 years ago
De un total de 24 niñas 1/4 practican natación, 1/2 juega volibol y el resto no practica ningún deporte. ¿Cuántas niñas no pract
masya89 [10]

Answer:

6 niñas no practican ningún deporte.

Step-by-step explanation:

De un total de 24 niñas, \frac{1}{4} practican natación. Esto se expresa mediante la operación matemática:

\frac{1}{4} *24

Para multiplicar una fracción por un número entero, cualquier entero n puede ser escrito como la fracción \frac{n}{1}. Entonces en este caso:

\frac{1}{4} *24=\frac{1}{4} *\frac{24}{1}

Ahora se multiplican los denominadores para obtener el denominador final y se multiplican los numeradores para obtener el numerador final:

\frac{1}{4} *24=\frac{1}{4} *\frac{24}{1}=\frac{1*24}{4*1}=\frac{24}{4}

Finalmente, se reduce el resultado hasta llegar a la forma más simple. Para obtener un resultado simplificado, se divide el numerador por el denominador.  En este caso, para reducir la fracción \frac{24}{4}, se divide 24 por 4. El resultado obtenido es 6. Esto indica que de un total de 24 niñas, 6 practican natación.

Por otro lado, de un total de 24 niños, \frac{1}{2} juegan voleibol. Esto se expresa mediante la operación matemática:

\frac{1}{2} *24

Resolviendo de manera similar a lo previamente calculado, se obtiene:

\frac{1}{2} *24= 12

Esto indica que de un total de 24 niñas, 12 practican voleibol.

Por lo que 6 niñas practican natación y 12 voleibol, siento un total de 18 niñas las que practican algún deporte. Por lo que la cantidad de niñas que no practican ningún deporte se calcula mediante:

24 niñas - 18 niñas que practican algún deporte= 6 niñas

<u><em>6 niñas no practican ningún deporte.</em></u>

6 0
3 years ago
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