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
stealth61 [152]
3 years ago
5

Find 3x-y-3z if x=-2, y= 1, z=-2

Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0
Basically just substitute


3(-2)-1-3(-2) = -6-1+6 = -1


The answer is -1.
You might be interested in
Lee el anexo , posteriormente Escribe 5 preguntas en su cuaderno referente al texto que leiste.
Fynjy0 [20]

Las cinco preguntas extraídas del anexo se encuentran a continuación:

  1. ¿Cuál es le nombre del virus que provoca la enfermedad llamada coronavirus?
  2. ¿Los síntomas de coronavirus son graves en todas las personas?
  3. ¿Cómo se propaga el coronavirus?
  4. ¿Cómo se puede contagiar del virus una persona?
  5. Para disminuir el riesgo de contagio, ¿es mejor permanecer en espacios cerrados o en espacios abiertos? ¿Por qué?

<em>Extracción</em><em> de </em><em>preguntas</em><em> a partir de un texto</em>.

Cuando se requiere elaborar preguntas, a partir de un texto predeterminado, es ideal que primero se lea el texto y se identifiquen todos los temas y subtemas que este contiene, así, con cada uno de estos, se podrán realizar preguntas, garantizando que la totalidad de la respuesta se encuentre dentro del texto, ya sea de forma explícita o implícita, este último caso cuando la persona debe inferir algunas especificaciones con la información brindada.

Si quieres aprender un poco más sobre el coronavirus, puedes visitar el siguiente enlace: brainly.com/question/22435929?referrer=searchResults

5 0
2 years ago
Please help I don’t understand this
enyata [817]

Answer:

  d. √(1/(x+1))

Step-by-step explanation:

Just as operations can be performed on numbers and variables, so can operations be performed on functions. Here, you're asked to simplify the ratio of two functions.

  \displaystyle\left(\frac{g}{f}\right)(x)=\frac{g(x)}{f(x)}=\frac{\sqrt{x-1}}{\sqrt{x^2-1}}=\sqrt{\frac{x-1}{x^2-1}}

At this point, you're supposed to know the factoring of the difference of squares:

  \displaystyle=\sqrt{\frac{x-1}{(x-1)(x+1)}}=\boxed{\sqrt{\frac{1}{x+1}}}

4 0
2 years ago
A chemist wants to mix a solution of 20% chlorine with a solution of 60% chlorine to make 120 liters of 30% solution of chlorine
Mama L [17]

Answer:

90 and 30 liters

Step-by-step explanation:

1) if solution of 20% is 'x' and of 60% is 'y' liters, then

2) the pure chlorine is: for solution of 20% - 0.2x, for solution of 60% - 0.6y and

3) the mix of the two solutions is 120=x+y.

4) using these items it is possible to make up the system of two equations:

\left \{ {{x+y=120} \atop {0.2x+0.6y=0.3(x+y)}} \right.

5) finally, x=90 liters of 20%; y=30 liters of 60% solution.

8 0
2 years ago
The mark up on an item is $3.75. If the mark up is 35%, what was the original price? Round
oksian1 [2.3K]

Answer:

$10.71

Step-by-step explanation:

\frac{3.75}{y} =\frac{35}{100}

y × 35 = 3.75 × 100

35y = 375

35y ÷ 35 = 375 ÷ 35

y=10\frac{5}{7}

y = 10.7142857143

10.7142857143 round to 10.71

5 0
2 years ago
5 watermelons 6 cantaloupes cost $54. 4 watermelons and 8 cantaloupes $56. how much is a cantaloupe
GREYUIT [131]

Answer:

A cantaloupe costs $4

Step-by-step explanation:

Watermelons = W

Cantaloupes = C

Write given statements as equations

5W + 6C = 54

4W + 8C = 56

Simplify the second equation

4W + 8C = 56

Subtract 8C from both sides of the equation

4W = 56 - 8C

Divide both sides of the equation by 4

W = 14 - 2C

Substitute into second equation

5W + 6C = 54

5(14 - 2C) + 6C = 54

Multiply 5(14 - 2C)

70 - 10C + 6C = 54

Add -10C + 6C

70 - 4C = 54

Add 4C to both sides of the equation

70 = 54 + 4C

Subtract 54 from both sides of the equation

16 = 4C

Divide both sides of the equation by 4

C = 4

A cantaloupe costs $4

5W + 6(4) = 54

Multiply 6(4)

5W + 24 = 54

Subtract 24 from both sides of the equation

5W = 30

Divide both sides of the equation by 5

W = 6

A cantaloupe costs $4

A watermelon costs $6

Hope this helps :)

8 0
3 years ago
Other questions:
  • What is the exact area of a circle having the diameter of 6in A:9 pie B: 36pie C: 6 pi D: 3pie
    11·1 answer
  • If P &gt; Q is true and Q is true then p is
    13·1 answer
  • Need help, answer for brainlest
    10·1 answer
  • HELP WHAT IS 2+2!!!!!
    6·2 answers
  • BRAINLIEST!!!!!!!!
    6·2 answers
  • What type of equations are equivalent to (1/2) 3
    12·1 answer
  • Help, please this is a cry for help <br><br><br>also, show the work thanks
    12·1 answer
  • First one to answer gets BRAINLIEST no cap look at the picture.
    14·2 answers
  • Please help any tips greatly appreciated:)
    6·1 answer
  • You have a recipe that indicates to use 6 parts of sugar for every 5 parts of flour. You use 24 cups of sugar. How much flour do
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!