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4 years ago

What value is added to both sides of the equation x2 − 8x = −10 in order to solve by completing the square? −8 16 −4 4?

1 answer:

7 0

X^2 - 8x = -10 .....u would add 16 to both sides
x^2 - 8x + 16 = -10 + 16

take half of ur x term, ur x term is -8, half of it is -4, then u square it...-4^2 = 16, and that is what u add to both sides

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4(x+8)-2(x-7)=46 x=?

Scorpion4ik [409]

Answer:

x = 0/2

x = 0

Step-by-step explanation:

4(x+8)-2(x-7) = 46

Expanding the brackets

4x +32 - 2x +14 = 46

2x + 46 = 46

2x = 46-46

2x = 0

x = 0/2

x = 0

5 0

3 years ago

This table shows values represented by an exponential function.

Bad White [126]

Answer:

$a = 2 , f(2)=9$

$b = 4 , f(4)=64$

And replacing the data into the average rate formula we got:

$m = \frac{64-9}{4-2}= 27.5$

And then the best answer for this case would be:

C. 27.5

Step-by-step explanation:

For this cae we know that the average rate of change of a function is given by this general expresion:

$m = \frac{f(b) -f(a)}{b-a}$

For this special case from the info of the table we have:

$a = 2 , f(2)=9$

$b = 4 , f(4)=64$

And replacing the data into the average rate formula we got:

$m = \frac{64-9}{4-2}= 27.5$

And then the best answer for this case would be:

C. 27.5

7 0

3 years ago

3(x+3)+3x=15<br><br> Solution and check<br><br> Shown in attachment below

OLga [1]

3x + 9 + 3x =15
6x + 9 = 15
- 9 = -9
6x = 6
/6 /6

X =1

6 0

3 years ago

The length of a rectangle is four times its width.

mixer [17]

Let width be x

length=4x

ATQ

$\\ \sf\longmapsto 2(x+4x)=70$

$\\ \sf\longmapsto 5x=35$

$\\ \sf\longmapsto x=7$

Width=7ft
Length=7(4)=28ft

3 0

2 years ago

Read 2 more answers

3 tims what will =28

goldenfox [79]

9.3 repeating is the answer.

4 0

3 years ago

Read 2 more answers