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sergeinik [125]
3 years ago
11

What are the x-intercepts of the quadratic function?

Mathematics
1 answer:
ivolga24 [154]3 years ago
3 0
X=3 and x=-9 solve by factoring
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What are the solutions to the equation? use the quadratic formula to solve the equation. 2y²-10y+8=0
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The answer is D for this one
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Whats 15 over 8 multiplied by 64 over 9?
Julli [10]
40/3. You mutiply top and bottom straight across, then simplify.
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3 years ago
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
3 years ago
What is the solution to the system of linear equations?
AlexFokin [52]
X=8-y

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16-2y=10
-2y=10-16
-2y=-6
y=3

x+3=8
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(5,3) is the answer :)
8 0
2 years ago
A carpenter has two lengths of wood; one is 108cm long and the other is 72cm long. He wants to cut them up to produce smaller pi
Y_Kistochka [10]

Answer:

36 centimeters.

Step-by-step explanation:

1. To solve this problem you must find the Greatest common factor.

2. List the prime factor of 108 and 72:

108:(2)(2)(3)(3)(3)=(2^{2})(3^{3})\\ 72:(2)(2)(2)(3)(3)=(2^{3})(3^{2})

3. Now, you must choose the common prime numbers with the lowest exponents and multiply them:

(2^{2})(3^{2})=(4)(9)=36


4 0
3 years ago
Read 2 more answers
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