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o-na [289]
3 years ago
14

HELLP!!!! Please? HELPPP??

Mathematics
1 answer:
svet-max [94.6K]3 years ago
5 0

1 - a) x^2+10=36

b)x^2=36

x=-6 OR x=6

2 - a) 2x^2-20=3x

b) 2x^2-3x-20=0

2x^2-8x+5x-20=0

(2x+5)(x-4)=0

x=-5/2 OR x=4

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Please solve this maths equation
ZanzabumX [31]
The answer to the question is two.
7 0
3 years ago
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Don Alfredo quiete construir un corral cuadrado para sus gallinas, utizando metros de malla lineal para redearlo. Si el Zootecni
konstantin123 [22]

Answer:

Don Alfredo debe pagar $272,200 para encerrar por completo el corral.

Step-by-step explanation:

Dado que Don Alfredo quiere construir un corral cuadrado para sus gallinas, utilizando metros de malla lineal para rodearlo, si el zootecnista le recomendó construir uno que tenga 121 metros cuadrados, para determinar cuánto dinero debe pagar don Alfredo en la ferretería para encerrar por completo el corral si el metro lineal de malla tiene un valor de $ 6.200 el metro se deben realizar los siguientes cálculos:

121 metros cuadrados = √121 = 11 (x 11) = 11 x 4 = 44 metros lineales

44 x 6,200 = X

272,800 = X

Por lo tanto, Don Alfredo debe pagar $272,200 para encerrar por completo el corral.

8 0
3 years ago
What is 3(x + 7) expanded
Alex
Distributive proeprty
a(b+c)=ab+ac
3(x+7)=3x+21
6 0
3 years ago
Find center,foci, and vertices of ellipse (x+3)^2/21+(y-5)^2/25=1
sasho [114]
I don't know if we can find the foci of this ellipse, but we can find the centre and the vertices. First of all, let us state the standard equation of an ellipse. 

(If there is a way to solve for the foci of this ellipse, please let me know! I am learning this stuff currently.) 

\frac{(x-x_{1})^2}{a^2}+ \frac{(y-y_{1})^2}{b^2}=1

Where (x_{1},y_{1}) is the centre of the ellipse. Just by looking at your equation right away, we can tell that the centre of the ellipse is: 

(-3,5)

Now to find the vertices, we must first remember that the vertices of an ellipse are on the major axis. 

The major axis in this case is that of the y-axis. In other words, 

b^2>a^2 

So we know that b=5 from your equation given. The vertices are 5 away from the centre, so we find that the vertices of your ellipse are: 

(-3,10)
 & (-3,0)

I really hope this helped you! (Partially because I spent a lot of time on this lol) 

Sincerely,

~Cam943, Junior Moderator
6 0
4 years ago
Kira employer purchased a health insurance plan that costs $665 per month and requires that Kira pay $75 toward the plan. What i
Ainat [17]
So basically they want you to find out how much Kira/employer has to pay per year so

665=monthly
12 months in a year
665 times 12=7980

also the additonal 75 to start so
7980+75=8055 per year or annualy
3 0
4 years ago
Read 2 more answers
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