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Ludmilka [50]
3 years ago
11

Find the center of the equation 4x2 + y2 + 8x-5= 0.

Mathematics
1 answer:
evablogger [386]3 years ago
3 0

Answer:

(-1,0)

Step-by-step explanation:

Plug it into desmos graphing calculator exactly how it is.

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Factor 16x^2 + 49. Check your work.
Shtirlitz [24]

Answer:

16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})

Step-by-step explanation:

Given : Expression 16x^2+49

To find : Factor the expression ?

Solution :

The given expression is a quadratic function y=ax^2+bx+c the solution is x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

On comparing with general form,

a=16, b=0, c=49

Substitute in the formula,

x=\frac{-0\pm\sqrt{0^2-4(16)(49)}}{2(16)}              

x=\frac{\pm\sqrt{-3136}}{32}          

x=\frac{\pm56i}{32}      

x=\frac{56i}{32},\frac{-56i}{32}      

x=\frac{7i}{4},\frac{-7i}{4}              

Factors are (x-\frac{7i}{4}),(x+\frac{7i}{4})        

Therefore, 16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})    

4 0
3 years ago
Explain how 3^7 + 2 must be an odd number
Firdavs [7]
It must be an odd number because 3^7 is also shown as:
3x3x3x3x3x3x3

Which equals:2,187

2,187 is an odd number because the last number is a 7 which is odd.
5 0
1 year ago
If x=2 ,y=12 and x=4,y=3,find n and k if y is inversely proportional to x and k is a constant
Setler [38]

question:

x=2 ,<em>y</em>=12 and x=4,y=3,find n and k if y is inversely proportional to x and k is a constant

answer:

k=12 x=3 n=4

explain:

that the answer because the question said find the k and x and n so I find them

8 0
2 years ago
The roots of an equation are x = -1 ± i. The equation is x2 + + 2 = 0.
OleMash [197]
Im pretty sure its x=-1
7 0
3 years ago
i bought 3 small tapas dishes and 2 large ones on a visit to café ba-ba-reeba and. spent $14. I went back another day and got 4
satela [25.4K]
The small dish costs $2 each and the large dish costs $4 each,

2(3)+4(2)=6+8=14

2(4)+4(1)=8+4=12
5 0
3 years ago
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