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2 years ago

Find f(–2) for the function f(x) = 3x2 – 2x 7. −13 −1 1 23

Mathematics

1 answer:

pickupchik [31]2 years ago

8 0

Answer:

Step-by-step explanation:

f ( x ) = 3x² - 2x

To find : f ( - 2 )

f ( - 2 ) = f ( x )

Here,

x = - 2

f ( - 2 ) = 3 ( - 2 )² - 2 ( - 2 )

= 3 ( 4 ) - 2*( - 2 )

= 3*4 + 4

= 12 + 4

f ( - 2 ) = 16

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Rosa and Hercules are collecting chandeliers in a ratio of 10:8. If they collected 270 chandeliers altogether, how many chandeli

m_a_m_a [10]

Answer:

Step-by-step explanation:

so you have to multiply the ratio first

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3 years ago

Suppose a scatter plot contains the points (12, 28), (15, 33), (21, 44), (29, 62), and (33, 68). Which of these points would be

yawa3891 [41]

Answer:

Unsure, take a look at the visualisation:

desmos(dotcom)/calculator/fjze0od81o

Replace the (dotcom) with ".com" ( links are not allowed :( )

Explanation:

None of the points look as though they are an outlier from the line of linear regression, although (29,62) looks furthest from the line so could be a possible answer although I would probably say there is no outlier.

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3 years ago

A car initially traveling at 20 kilometers per hour takes 10 seconds to speed up to 70 km/hour. At what rate is it changing spee

Snezhnost [94]

Initial velocity=u=20km/h
Final velocity=v=70km/h
Time=10s=t

Convert speeds to m/s

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$\\ \rm\longmapsto v=70\times \dfrac{5}{18}=19.4m/s$

$\boxed{\sf Acceleration=\dfrac{v-u}{t}}$

$\\ \rm\longmapsto Acceleration=\dfrac{19.4-5.05}{10}$

$\\ \rm\longmapsto Acceleration=\dfrac{14.3}{10}$

$\\ \rm\longmapsto Acceleration=143m/s^2$

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2 years ago

I’m having a hard time with finding the angles

MakcuM [25]

Answer:

I don't know angles at all please ask your teacher for help...

Step-by-step explanation:

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3 years ago

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andreyandreev [35.5K]

Answer:

-3,5

Step-by-step explanation:

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3 years ago