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2 years ago

12

a landscaping store charges 12.50 per pound of gravel if you purchase 3 pounds or less. any gravel you purchase beyond the first

three pounds costs $10 per pound. write a piecewise function

1 answer:

Anna007 [38]2 years ago

7 0

Answer:

i dont even know......

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Why do some quadratic graphs move left or right and others do not? Is there a correlation between this and them moving up and do

Vikentia [17]

Answer:

(x + 3)^2 is left 3 because it becames 0 at -3

(x - 3)^2 is right 3 because it becames 0 at 3

x^2 +3 is up 3 because your just adding 3 units up

x^2 - 3 is down 3 because your just subtracting 3 units down

Step-by-step explanation:

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2 years ago

I will mark as the brainiest if you get this correct<br> thx so much xxx

fgiga [73]

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2 years ago

Place the expressions that are equivalent under the corresponding expression in the table.

serg [7]

Answer:

Step-by-step explanation:20

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2 years ago

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2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.

shepuryov [24]

Answer:

Step-by-step explanation:

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

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

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2 years ago

Please help heres some points!<br>

Shkiper50 [21]

Answer:

tooth A

Step-by-step explanation:

0.23 = 0.230

0.230 > 0.195

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2 years ago

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