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3 years ago

X 2 +y 2 +4x−5=0 standard equation Really need help I’m confused

Mathematics

2 answers:

Firdavs [7]3 years ago

4 0

I used the completing the square method to get the (x+2)^2. The final line is in standard form.

Zina [86]3 years ago

3 0

X2 plus Y2 plus 4X -5 equals zero security question

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In a particular class, there are 3 freshmen, 5 sophomores, 11 juniors, and 2 seniors. If the instructor randomly chooses a stude

Monica [59]

Freshmen/total
3/21= 1/7

1/7

Hope this helps!

7 0

4 years ago

Read 2 more answers

A brother and a sister are in the same math class. there are 8 boys and 20 girls in the class. one boy and one girl are randomly

Pavlova-9 [17]

<h2>the answer i thinkk is 2/20 because since there ae 20 children, then the brother and sister each have a 1% chance, hope this helped!</h2>

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3 years ago

Need help!!!!!!! Please help solve solution!

11111nata11111 [884]

Answer:

x=65

Step-by-step explanation:

Step 1: Add -3 to both sides.

√x−1+3+−3=11+−3

√x−1=8

Step 2: Solve Square Root.

√x−1=8

x−1=82(Square both sides)

x−1=64

x−1+1=64+1(Add 1 to both sides)

x=65

Check answers. (Plug them in to make sure they work.)

x=65(Works in original equation)

3 0

3 years ago

Write each polynomial function in standard form , classify it by degree and determine the end behavior of its graph Y=12-x^4

Dmitry_Shevchenko [17]

In standard form, zero is always on the right:
y = 12 - x^4
y + x^4 - 12 = 0

End behavior:
As x approaches ∞, y approaches -∞
As x approaches -∞, t approaches -∞

4 0

3 years ago

The sum of a number and its square is 182. Find the number.

Mars2501 [29]

Answer:

13 and -14 satisfy this condition

Step-by-step explanation:

Let's represent that number as x

and the square of x is x^2

So,

x + x^2 = 182

Subtract 182 from both sides

x + x^2 - 182 = 182 - 182

x + x^2 - 182 = 0

rearrange the quadratic equation

x^2 + x -182 = 0

let's use the quadratic formula

$\frac{-b+\sqrt{b^2-4ac} }{2a}$ or $\frac{-b-\sqrt{b^2-4ac} }{2a}$

a = 1, b = 1, c = -182

$\frac{-1+\sqrt{1^2-4*1*(-182)} }{2*1}$ or $\frac{-1-\sqrt{1^2-4*1*(-182)} }{2*1}$

$\frac{-1+\sqrt{1+728} }{2}$ or $\frac{-1-\sqrt{1+728} }{2}$

$\frac{-1+\sqrt{729} }{2}$ or $\frac{-1-\sqrt{729} }{2}$

$\frac{-1+{27} }{2}$ or $\frac{-1-{27} }{2}$

$\frac{26}{2}$ or $\frac{-28}{2}$

13 or - 14

Lets check

13 + 13^2 = 13 + 169

= 182

Also,

-14 + (-14^2) = -14 + 196

= 182

8 0

3 years ago

X ​2 ​​ +y ​2 ​​ +4x−5=0 standard equation Really need help I’m confused

X 2 +y 2 +4x−5=0 standard equation Really need help I’m confused