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murzikaleks [220]
3 years ago
11

Please help me with my math ​

Mathematics
1 answer:
lilavasa [31]3 years ago
7 0

Answer:

140

Step-by-step explanation:

Use the values of  a,  b, and  c  to find the discriminant.

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A) La autopista 10 en Haradh, Arabia Saudita, tiene más de 200
xxMikexx [17]

Explicación paso a paso:

Como no dijimos qué calcular, también podemos encontrar el tiempo que tarda el automóvil en viajar por la carretera.

Velocidad = Distancia / Tiempo

Tiempo = Distancia / Velocidad

Dado

Distancia = 200 km

Velocidad = 120 km / h

Sustituir

Tiempo = 200/120

Tiempo = 20/12

Tiempo = 1,67 horas

Por tanto, el tiempo que tarda el coche en recorrer la carretera es de 1,67 horas.

4 0
3 years ago
Solve with substitution<br> y = x - 15<br> y = 4x
Oduvanchick [21]

Answer:

(-5, -20)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Coordinates (x, y)
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define</u>

y = x - 15

y = 4x

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                                                                                                4x = x - 15
  2. [Subtraction Property of Equality] Subtract <em>x</em> on both sides:                      3x = -15
  3. [Division Property of Equality] Divide 3 on both sides:                                x = -5

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define original equation:                                                                               y = 4x
  2. Substitute in <em>x</em>:                                                                                                y = 4(-5)
  3. Multiply:                                                                                                           y = -20
7 0
3 years ago
Write the expression as a sine or cosine of angle sin pi/5 cos pi/2 + sin pi/2 cos pi/5
bazaltina [42]

Answer:

(cos(π) sin(π))/(2 5) + (cos(π) sin(π))/(5 2) = 1/5 cosh(i π) cos(-π/2)

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
vredina [299]

Answer:

D

Step-by-step explanation:

I hope this is correct!

8 0
3 years ago
What does the x equal ?
tiny-mole [99]

Answer:

80

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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