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charle [14.2K]
3 years ago
13

Cada pregunta y complete con V si considera que la aseveración es verdadera y una F si considera que es falsa (15 puntos total)(

1 punto c/u)
1 ___ Al resolver un sistema de ecuación lineal 2X2 se obtiene siempre un punto de intersección entre las dos ecuaciones lineales.
2 ____ Existe solo un método para resolver sistema de ecuaciones lineales 2x2.
3 ____ Un sistema de ecuaciones lineales 2x2 puede tener infinitas soluciones.
4 _____ Los sistemas de ecuaciones líneas se pueden resolver utilizando el método de igualación.
5 _____ El método de reducción consiste en despejar en una de las dos ecuaciones una de las tres incógnitas y sustituirla en la nueva ecuación.
6 _____ Al aplicar una homotecia en el plano cartesiano la figura solo aumenta o disminuye de tamaño.
7 _____ Al aplicar homotecia a una figura esta mantiene su forma.
8 _____ Las tablas de doble entrada nos permiten organizar la información.
9 _____ Las potencias sirven para escribir una multiplicación formada por varios números iguales de una manera más simplificada.
10 _____ La representación grafica de una función cuadrática es una parábola.
11 _____ La concavidad de una parábola lo determina el término independiente.
12 _____ El eje de simetría es una línea recta horizontal que divide a la parábola en dos.
13 _____ En probabilidades el espacio muestra corresponde a todas las posibles soluciones.
14 _____En probabilidades dos eventos son independientes ya que la realización de uno no afecta la probabilidad del otro.
15 _____ En la función cuadrática las soluciones son siempre dos soluciones distintas.
Mathematics
2 answers:
Natali [406]3 years ago
5 0

Answer:

sey

Step-by-step explanation:

natima [27]3 years ago
3 0

Step-by-step explanation:

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A university knows from historical data that 25% of students in an introductory statistics class withdraw before completing the
Vikki [24]

Answer:

13.4%

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1-p).

Here, n = 16, r = 2, p = 0.25, and q = 0.75.

P = ₁₆C₂ (0.25)² (0.75)¹⁶⁻²

P = 120 (0.25)² (0.75)¹⁴

P = 0.134

There is a 13.4% probability that exactly 2 students will withdraw.

8 0
3 years ago
Identify the side lengths of the triangle.
Degger [83]

Answer:

36 36 32

Step-by-step explanation:

6 0
3 years ago
Helpcppdpdppd nessxbshzj
aleksley [76]
Pretty sure it’s “b= p/2 - a” which is the second answer
7 0
3 years ago
Read 2 more answers
What is 5/3 +2? That is certainly a challenging task to manage.
Sever21 [200]

Answer:

3.66

Step-by-step explanation:

6 0
3 years ago
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Need help with this ignore what a put in the box it isn’t right
Zarrin [17]

f=6cm\\g=8cm

Why?

The first thing we need to do is find the area of the triangle, we can to that by subtracting the area of ABCD from ACBE, then, we can use the formulas to calculate the area for both triangle and rectangle to find "f" and "g".

Calculating we have:

TriangleArea=ABCE-ABCD\\\\TriangleArea=60cm^{2}-48cm^{2}=12cm^{2}

Now, we can calculate "f" by using the formula to calculate the area of the triangle:

TriangleArea=\frac{b*h}{2}\\\\TriangleArea=\frac{f*4cm}{2}\\\\12cm^{2}*2=f*4cm\\\\\frac{24cm^{2}}{4cm}=f\\\\f=6cm

Now, finding "g" by using the formula to calculate the area of the rectangle, we have:

RectangleArea=ABCD\\\\ABCD=Base*Height\\\\48cm^{2}=base*6cm\\\\base=g=\frac{48cm^{2}}{6cm}=8cm

Hence, we have that:

f=6cm\\g=8cm

Have a nice day!

8 0
3 years ago
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