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fomenos
3 years ago
12

1. What is the solution to the system of equations?

Mathematics
1 answer:
Mkey [24]3 years ago
5 0
I have the same question but I only need to do b
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Help me please algebra 2 PLEASSEEEEE!!!
liq [111]

Answer:

29.74 degrees.

Step-by-step explanation:

Tan(theta) = opposite / adjcent.

opposite = 8

adjacent = 14

Tan(theta) = 8/14

Tan(theta) = 0.5714

theta = tan^-1(0.5714)

theta = 29.74 degrees

5 0
4 years ago
The low temperature on a given day is -2 °F. During the day, the temperature rises by 6 degrees
Fofino [41]

Answer: 4°F

Step-by-step explanation:

8 0
3 years ago
Data on IQ for 33 first graders are given as follows: 82, 96, 99, 102, 103, 103, 106, 107, 108, 108, 108, 108, 109, 110, 110, 11
Dahasolnce [82]

Answer:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

Where n represent the sample size, on this case n =33. If we use this formula we got:

\bar X = 113.727

And for this case we know that is the best estimator since is an unbiased estimator for the true population mean since we have this:

E(\bar X) = E(\frac{\sum_{i=1}^n x_i}{n})= \frac{1}{n} \sum_{i=1}^n E(X_i) = \frac{n\mu}{n} = \mu

Step-by-step explanation:

For this case we have the following values given:

82, 96, 99, 102, 103, 103, 106, 107, 108, 108, 108, 108, 109, 110, 110, 111, 113, 113, 113, 113, 115, 115, 118, 118, 119, 121, 122, 122, 127, 132, 136, 140, 146

And we want to estimate the mean value of IQ for the conceptual population.

For this case we can use as estimator for the population mean the sample mean. We know that the sample mean is given by this formula:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

Where n represent the sample size, on this case n =33. If we use this formula we got:

\bar X = 113.727

And for this case we know that is the best estimator since is an unbiased estimator for the true population mean since we have this:

E(\bar X) = E(\frac{\sum_{i=1}^n x_i}{n})= \frac{1}{n} \sum_{i=1}^n E(X_i) = \frac{n\mu}{n} = \mu

5 0
3 years ago
The perimeter of the blueprint is represented by the equation P=8x. What is the equation of the perimeter when solved for x
Korvikt [17]

Answer:

x = P/8

Step-by-step explanation:

The perimeter of the blueprint is given by the equation :

P = 8x

We need to solve the above equation for x.

Dividing both sides of the equation by 8.

\dfrac{P}{8}=\dfrac{8x}{8}\\\\x=\dfrac{P}{8}

Hence, the value of x is P/8

5 0
3 years ago
El perímetro es 28cm y el ancho es de 6 cm cuál es al alto
Snowcat [4.5K]

Answer:

El mayor lado del rectángulo es de 10 cm

Explicación paso a paso:

Perímetro de un rectángulo: es el doble de la suma de sus lados

P = 2 (a+b)

a: es el ancho del rectángulo

b: es el largo del rectángulo

Uno de los lados es 6cm mas que el otro lado

b= a + 6 cm

Sustituimos en la ecuación de perímetro:

28cm /2 = a+a+6cm

14cm = 2a +6 cm

14cm-6cm = 2a

a = 4 cm

b = 10cm

El mayor lado del rectángulo es de 10 cm

brainly.lat/tarea/2483694

Step-by-step explanation:

5 0
3 years ago
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