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Ulleksa [173]
3 years ago
7

X^2+8x+11=0 solve using the quadratic formula

Mathematics
1 answer:
lora16 [44]3 years ago
5 0

Answer: x=-4+\sqrt{5}, x=-4-\sqrt{5}

Step-by-step explanation:

x^{2} +8x+11=0\\\\x=\frac{-8+2\sqrt{5} }{2} , \frac{-8-2\sqrt{5}}{2} \\\\x=-4+\sqrt{5}, x=-4-\sqrt{5}

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY!

- Cutiepatutie ☺❀❤

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Slove 6x - 5<br> ———= x + 1<br> 2
leonid [27]

Answer:

1+1=2

Step-by-step explanation:

ur answer is x=6/5

3 0
3 years ago
En una muestra de 50 restaurantes de comida rápida, la venta media fue de $3.000, y la desviación estándar, $200. El intervalo d
Step2247 [10]

Respuesta:

(2945.411; 3054.589)

Explicación paso a paso:

Dado ;

Tamaño de la muestra, n = 50

Media, xbar = 3000

Desviación estándar, s = 200

Nivel de confianza, Zcrítico al 95% = 1,96

El intervalo de confianza se define como:

Xbar ± margen de error

Margen de error = Zcrítico * s / sqrt (n)

Margen de error = 1,96 * 200 / sqrt (50)

Margen de error = 54.589

Límite inferior = (3000 - 54.589) = 2945.411

Límite superior = (3000 + 54.589) = 3054.589

(2945.411; 3054.589)

8 0
3 years ago
The highway mileage (mpg) for a sample of 5 different models of a car company can be found below. Find
qaws [65]
You got divide só see mean, the middle number is the median, range you add all number and divide but how many number has
5 0
3 years ago
2. En la ciudad de Quito, en la temporada fría, se registran temperaturas que van desde los 5 °C hasta los 18 °C. En la temporad
natulia [17]

Answer:

(See explanation below for further detail/Véase la explicación abajo para mayores detalles)

Step-by-step explanation:

(This exercise is written in Spanish and explanations will be held in such language)

a) Las temperaturas quedan representadas a continuación:

Quito - Temporada Fría

Intervalo

5 ^{\circ}C \leq t \leq 18^{\circ}C (Este intervalo indica si el dato puede pertenecer a la temporada fría)

Conjunto

C = \{\forall t \in \mathbb {R}| 5 \leq t \leq 18\} (Este conjunto acumula todo el registro de las temperaturas de la temporada fría)

Quito - Temporada Cálida

Intervalo

4 ^{\circ}C \leq t \leq 30^{\circ}C (Este intervalo indica si el dato puede pertenecer a la temporada cálida)

Conjunto

H = \{\forall t \in \mathbb {R}| 4 \leq t \leq 30\} (Este conjunto acumula todo el registro de las temperaturas de la temporada cálida)

b) La temperatura de la ciudad de Quito pertenece esencialmente a dos intervalos:

Intervalo de Temporada Fría:

5 ^{\circ}C \leq t \leq 18^{\circ}C

Intervalo de Temporada Cálida:

4 ^{\circ}C \leq t \leq 30^{\circ}C

c) Toda temperatura mayor o igual que 4 °C y menor o igual que 30 °C.

d) Temperaturas mayores o iguales a 5 °C y menores o iguales a 18 °C.

e) Temperaturas mayores o iguales a 4 °C y menores o iguales a 30 °C.

6 0
4 years ago
Mikaela travels 15 blocks on her skateboard in 5 minutes. At this speed, how many blocks can she travel on her skateboard in 12
Alchen [17]

Answer:

36 blocks.

Step-by-step explanation:

We have been given that Mikaela travels 15 blocks on her skateboard in 5 minutes. We are asked to find the number of blocks that she can travel on her skateboard in 12 minutes.

We will use proportions to solve our given problem.

\frac{\text{Blocks traveled}}{\text{Time taken}}=\frac{15}{5}

\frac{\text{Blocks traveled}}{12}=\frac{15}{5}

\frac{\text{Blocks traveled}}{12}\times12=\frac{15}{5}\times12

\text{Blocks traveled}=3\times12

\text{Blocks traveled}=36

Therefore, Mikaela will travel 36 blocks on her skateboard in 12 minutes.

3 0
3 years ago
Read 2 more answers
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