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Bess [88]
2 years ago
15

Solve (-2)-|-13|?????????

Mathematics
1 answer:
Nikitich [7]2 years ago
3 0
-15 hope this helps :0
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X+y+z=1<br> 2x+4y+6z=2<br> -x+3y-5z=11
sleet_krkn [62]
<span><span> x = 0</span> <span>  y = -x/2+2</span> <span>  z = -x-y+1 
hope this helps fam :)</span></span>
4 0
2 years ago
3. The equation of a circle is x^2+y^2-4x+2y-11=0 . What are the center and the radius of the circle? Show your work.
Charra [1.4K]
Rewrite in standard form to find the center (h,k) and redius r.
center: (2,-1)
Radius:4
have a great day!!!
7 0
3 years ago
A horse ate 1.8 pounds of grass in 4 days how many grass can the horse eat for 7 days
jolli1 [7]
i think the answer to this is 3.15
4 0
3 years ago
Read 2 more answers
2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.
shepuryov [24]

Answer:

Step-by-step explanation:

\alpha+\beta=\dfrac{5}{2} \\\\\alpha*\beta=\dfrac{1}{2} \\\\\alpha^2+\beta^2=\dfrac{21}{4} \ (see\ previous\ post)\\\\(\alpha+\beta)^4=\dfrac{625}{16} \\\\=\alpha^4+\beta^4+4*\alpha^3*\beta+6*\alpha^2*\beta^2+4*\alpha*\beta^3\\\\=\alpha^4+\beta^4+4*(\alpha*\beta)(\alpha^2+\beta^2)+6*\alpha^2*\beta^2\\\\\alpha^4+\beta^4=(\alpha+\beta)^4-4*(\alpha*\beta)(\alpha^2+\beta^2)-6*\alpha^2*\beta^2\\\\= \dfrac{625}{16} -4*\dfrac{1}{2} *\dfrac{21}{4} -6*(\dfrac{1}{2})^2 \\\\

= \dfrac{625}{16}- \dfrac{168}{16}-\dfrac{24}{16}\\\\\\= \dfrac{433}{16}

7 0
2 years ago
Write the next three numbers in the three numbers in the sequence:0.4, 1.2, 3.6, 10.8
wolverine [178]
The rule is 3x
so to find the next number you multiple the most recent one by 3
the next three are:
32.4, 97.2, 291.6
4 0
3 years ago
Read 2 more answers
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