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inysia [295]
3 years ago
6

What is the root of the function f(x)=3x^2-21x?

Mathematics
1 answer:
GrogVix [38]3 years ago
8 0

Answer: The root of this function would be (7,0)

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Easy question.. giving brainliest<br> x/16 = 10/36<br> x=_
irina [24]

Answer:

x=40/9

Step-by-step explanation:

\frac{x}{16}  =  \frac{10}{36}  |first \: you \: cross \: multiply|  \\ x(36) = 16(10)  |open \: bracket  |  \\ 36x = 160 |divide \: both  \: side \:by \: 36 |  \\  \frac{36x}{36}  =  \frac{160}{36}  \\ x = \frac{40}{9}

6 0
3 years ago
I need help with these
tia_tia [17]

Answer:

Step-by-step explanation:

5)               -7 (-15w + 21) + 3(18 - 27w)

Step 2:        105w - 81w - 147 + 54

6)      

step 3:       24w - 93

7 0
3 years ago
The local farmer wants to know how many gallons of water his new watering through holds solve
Dimas [21]

Answer:

35

Step-by-step explanation:

7x5= 35

i think pls correct me if im wrong

6 0
3 years ago
Read 2 more answers
In 1980, the average monthly rate for basic able TV in the United States was
poizon [28]

The average rate of change in the monthly rate per year is -$0.056 i.e decreases by 0.056 every consecutive year.

Step-by-step explanation:

Step 1; The initial value is $7.69 in 1980 and the final value is $6.13 in 2008.

Difference in values = Final value - initial value = $6.13- $7.69 = -$1.56 (the negative symbol indicates that the cost has gone down with time)

Period between the values =Final year - initial year = 2008 - 1980 = 28 years.

Step 2; To find the rate of change per year, we divide the difference in values in that given period of time by the number of years in that period.

Rate of change per year = Difference in values in that period/ no of years.

                                          = -$1.56 / 28 = -$0.056 (the negative symbol indicates that the cost has gone down with time)

So for every year between 1980 and 2008, the price of the monthly rate for basic able TV reduced by $0.056.

6 0
3 years ago
( HELP ASAP! EASY POINTS ) The picture below shows a box sliding down a ramp:
TEA [102]

Answer:

AC = 14 cosec(68)

Explanation:

Here given:

  • angle: 68°
  • opposite: 14 ft
  • hypotenuse: AC

Use sine rule:

\rightarrow \sf sin(x) = \dfrac{opposite}{hypotenuse}

\rightarrow \sf sin(68) = \dfrac{14}{AC}

\rightarrow \sf AC= \dfrac{14}{ sin(68) }

\rightarrow \sf AC= 14  \ cosec(68)

4 0
2 years ago
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