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3 years ago

What is the line of symmetry for the parabola whose equation is y = 3x2 + 24x - 1?

2 answers:

meriva3 years ago

8 0

Hello :
y = 3x2 + 24x - 1
= 3(x²+8x) -1
= 3 (x² +2(4)(x) +4²- 4² ) -1
= 3((x+4)² -16)-1
y = 3(x+4)² - 49
the line of symmetry is : x= - 4

KatRina [158]3 years ago

6 0

Answer:x=-4

Step-by-step explanation:

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Which of the following gives a product of x^3 - 3x ?

Vilka [71]

Answer:

Option a

Step-by-step explanation:

Lets verify

RHS

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Use distributive law
a(b-c)=ab-bc

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3 years ago

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RideAnS [48]

Answer:

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Step-by-step explanation:

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3 years ago

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vitfil [10]

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5 0

3 years ago

I need help is it A B C or D

myrzilka [38]

C.)
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3 years ago

The time to complete the construction of a soapbox derby car is normally distributed with a mean of three hours and a standard d

TEA [102]

Answer:

The probability that it would take more than four hours to construct a soapbox derby car = 0.1587 or 15.87 $\%$

Step-by-step explanation:

Given -

Mean $(\nu )$ = 3 hours

Standard deviation $(\sigma )$ = 1 hours

Let X be the no of hours to construct a soapbox derby car

the probability that it would take more than four hours to construct a soapbox derby car =

$P(X > 4)$ = $P(\frac{X - \nu }{\sigma}> \frac{4 - 3 }{1})$

= $P(Z > 1)$ Put $(Z = \frac{X - \nu }{\sigma})$

= 1 - $P(Z < 1)$

= 1 - .8413 Using z table

= 0.1587

3 0

3 years ago