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nalin [4]
4 years ago
12

Evaluate. 5 - x(x + 8)2, for χ- 4

Mathematics
1 answer:
BaLLatris [955]4 years ago
7 0

Answer:

x=7

idk if this is right  but i hope it helps you

P.S. plz friend me im new to this :P  :I

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75 POINTS AND I'LL GIVE BRAINLIEST!!!
Slav-nsk [51]

Answer:

Step-by-step explanation:

area of the square =10*10=100

area of the circle =pi r^2=pi*1^2=3.142

part a

p(hitting the circle =3.142/100=0.03142 Which is closer to 0

part b

p( hitting the white portion ) =1-0.03142=0.96858 which is closer to 1

4 0
2 years ago
Read 2 more answers
Find EF if EM= x^2+25 and MF = 10x
N76 [4]

Answer:

x^2 + 10x + 25; (x + 5)^2.

Step-by-step explanation:

When we're talking about line segments, we just have to find the sum of the two parts of the line segment to find the value of the whole. In this case, we have x^2 + 25, and 10x. So, we add them together.

x^2 + 25 + 10x

= x^2 + 10x + 25

Since this can be immediately factored into (x + 5)^2, you have your answer.

Hope this helps!

7 0
3 years ago
Megan bought 50 beads for $9.95. She received a 10% discount, and she paid a sales tax of 6%. how much did she pay for the beads
docker41 [41]
I think the answer 10.100 i really dont know
8 0
4 years ago
Solve 3x + k = c for x.
MariettaO [177]

Answer:

it's the second option

Step-by-step explanation:

let me know if it's right or wrong

3 0
3 years ago
Read 2 more answers
Ecuación de la hipérbola con centro en (0;0), focos en abrir paréntesis 0 coma espacio menos raíz cuadrada de 28 cerrar paréntes
yaroslaw [1]

Answer:

\frac{y^{2}}{25}-\frac{x^{2}}{3}=1

Step-by-step explanation:

Para resolver este problema debemos tomar en cuenta los datos que nos dan y la ecuación de una hipérbola. Comencemos con los datos:

centro: (0,0)

focos: (0,-\sqrt{28}),(0,\sqrt{28})

eje conjugado = 2\sqrt{3}

por los focos podemos ver que la hipérbola se dirige hacia el eje y, por lo que debemos tomar la siguiente forma de la ecuación de la parábola:

\frac{y^{2}}{a^{2}}+\frac{x^{2}}{b^{2}}=1

de los focos podemos obtener que:

c=\sqrt{28}

y del eje conjugado podemos saber que al dividir la longitud del eje conjugado dentro de 2 obtenemos b, así que:

b=\sqrt{3}

podemos utilizar la siguiente fórmula para obtener a:

c^{2}-a^{2}=b^{2}

si despejamos a en la ecuación obtenemos lo siguiente:

a=\sqrt{c^{2}-b^{2}}

ahora podemos sustituir los valores:

a=\sqrt{(\sqrt{28})^{2}-(\sqrt{3})^{2}}

a=\sqrt{28-3}

a=\sqrt{25}

a=5

así que media vez conozcamos a, podemos sustituir los datos en la ecuación de la hipérbola así que obtenemos lo siguiente:

\frac{y^{2}}{a^{2}}+\frac{x^{2}}{b^{2}}=1

\frac{y^{2}}{(5)^{2}}+\frac{x^{2}}{(\sqrt{3})^{2}}=1

\frac{y^{2}}{25}+\frac{x^{2}}{3}=1

si graficamos la hipérbola, queda como en el documento adjunto.

7 0
3 years ago
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