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natima [27]
3 years ago
10

4a^2-8a=0solve by competing square​

Mathematics
2 answers:
Mandarinka [93]3 years ago
7 0

Answer:

4a²-8a=0

4a(a−2)=0

The final solution is all the values that make 4a(a−2)=0 true.

a=0,2

Step-by-step explanation:

zalisa [80]3 years ago
6 0

Answer:

a=0 or a=2

Hope it helped!

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What is an equation of the line that passes through the point (−1,6) and is parallel to the line 2x+y=9
Alex73 [517]

Answer:

2x + y = 4

Step-by-step explanation:

2x + y = 9 => y = -2x + 9

Parallel lines have the same slope so m = -2

Given (-1,6)

y = mx + b

6 = -2(-1) + b

6 = 2 + b

b = 4

so y = -2x + 4 or 2x + y = 4

5 0
2 years ago
The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is
aniked [119]

Answer:

10.50°C

Step-by-step explanation:

Given x = 2 + t , y = 1 + 1/2t where x and y are measured in centimeters. Also, the temperature function satisfies Tx(2, 2) = 9 and Ty(2, 2) = 3

The rate of change in temperature of the bug path can be expressed using the composite formula:

dT/dt = Tx(dx/dt) + Ty(dy/dt)

If x = 2+t; dx/dt = 1

If y = 1+12t; dy/dt = 1/2

Substituting the parameters gotten into dT/dt we will have;

dT/dt = 9(1)+3(1/2)

dT/dt = 9+1.5

dT/dt = 10.50°C/s

Hence the rate at which the temperature is rising along the bug's path is 10.50°C/s

7 0
3 years ago
4a-3b=21 true or false
Katarina [22]
True, 
4a - 3b
4(6) - 3(1)
24  - 3  =  21
7 0
3 years ago
Pls in order to pass i need to finish this pls help and for 4 5 6 and only 9
Yuliya22 [10]

Answer:

7 and 8

7=a

8=b

and sssuree

9=A=100(3.14)

4) not sure butt sure like 70%

area=36(3.14)

5)9(3.14)

6)289(3.14)

hope u pass

7 0
2 years ago
The equation 2x + 4k − 9 = kx − k + 1 is really a family of equations, because for each value of k, we get a different equation
Olegator [25]
You haven't shared "the given value of x," or, if you have, you haven't drawn attention to it.

Just suppose we were to choose x = 4 as a possible solution and then try to find a value of the parameter k that would make x = 4 an actual solution.

2(4) + 4k - 9 = (4)(4) - (4) + 1

Then 8 + 4k - 9 = 16 - 4 + 1, or       4k - 1 = 13.  Then 4k = 14, and k = 14/4, or (after reduction)  k = 7/2   

If the parameter k equals 7/2, then x = 4 is a solution to the given equation.

To check this out further, start with the proposed solution x = 5 and find k.
3 0
3 years ago
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