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FrozenT [24]
3 years ago
12

I need help on this one

Mathematics
2 answers:
miv72 [106K]3 years ago
8 0

Answer:

gfgfgfgfgfg

Step-by-step explanation:

serious [3.7K]3 years ago
6 0

Answer:

X= -4

Step-by-step explanation:

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Step-by-step explanation:

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Câu 99: Cho hàm số f x  xác định trên ℝ , bảng biến thiên của hàm số f x   như sau.
OLga [1]

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i doesn,t understand this language

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3 years ago
Some friends played a bored game. During the game, one unlucky player had to move back 7 spaces 8 turns in a row.find a number t
Ilya [14]
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8 0
2 years ago
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SOlve the equation <br><br> 0.25 r - 0.125 + 0.5 r = 0.5 +r
seropon [69]
You put all the numbers on one side of the equation and letters on another. 

0.25r + 0.5r - r = 0.5 +0.125 

-0.75r  = 0.625    divide both sides by -0.75

r = -0.125


6 0
3 years ago
Question 3 (4 MARKS) Find the equation of the tangents to the curve of the function with rule y = x^2 at the points where x = a
Arte-miy333 [17]

Answer:

(0 , -a²)

Step-by-step explanation:

tangent at x = a and x = -a

y = x²     (a , a²) and (-a , a²) must be on the curve and tangent to curve

gradient dy/dx = 2x

slope (m) at x = a is <u>2a</u>     and slope (m') at x=-a is<u> -2a</u>

line1: (y - a²) / (x - a) = 2a

        y - a² = 2a (x - a)                           y = 2ax - a²   ... (1)

line2: (y - a²) / (x + a) = - 2a                   y = -2ax- a²   ... (2)

(1) - (2): 4ax = 0       a≠0    x = 0

y = - a²

I wish I did it right, or ....

3 0
3 years ago
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