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3 years ago

What is the equation of the axis of symmetry of the graph of y-ax? +bx+c?

Mathematics

1 answer:

Svetllana [295]3 years ago

6 0

Answer:

x= -b/2a

Step-by-step explanation:

hello :

y = ax²+bx+c .... (a≠0)

the equation of the axis of symmetry of this graph is : x= -b/2a

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The price of an item decreased by 20% to $200. Then later the price decreased again from $200 to $150. What is the percent of de

cricket20 [7]

Answer:

40%

Step-by-step explanation:

ok so first find the og price:

100% - 20% = 80%

so 80% = 200

let the 100% be x:

x * 0.8 = 200

x= 250

100% = 250

(difference/ og price) * 100% = the percentage decrease/ increase

(250-150/250)* 100% = 40%

((the final price/ og price) * 100%) - 100%

((150/250)*100%) - 100% = 40%

There was a 40% decrease from the og price to the final price of 150.

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2 years ago

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Step-by-step explanation:

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3 years ago

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Which property was used to simplify the expression?<br><br> (3z)^2 = 3^2z^2 = 9z^2

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One of the product rules for exponents was used.
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Or, you can consider that the definition of an exponent and the associative and commutative properties of multiplication were used.
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3 years ago