2 years ago

X to the power of 2 subtract 3x for x=4

1 answer:

Helen [10]2 years ago

6 0

First, X^2 while x is 4 =4^2, which is 4x4, which is 16
3X while x is 4 is 12. 16-12=4. So the answer is 4

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NARA [144]

A is the mid point ==> AL = AB = 2AB
6x-17=2(2x+3) => 6x -17 = 4x +6 => 2x = 23 =>x=23/2
then just plug x into LB and AB

5 0

2 years ago

WITCHER [35]

C is correct because A is 2.82 and B is 2.8

3 0

3 years ago

velikii [3]

Answer:

The answer is option C, that is, (2,6)

6 0

2 years ago

Firdavs [7]

Answer:

X = 6

Step-by-step explanation:

4 0

2 years ago

Tanzania [10]

Solving $r^2-8r+9$ by completing a square gives $(r+4)^2-7$

Step-by-step explanation:

We need to solve the equation $r^2-8r+9$ by completing a square

The completing a square method requires: $a^2\pm 2ab +b^2=(a\pm b)^2$

Solving:

$r^2-8r+9\\=(r)^2-2(r)(?)+(?)^2+9$

We need to add and subtract (4)^2=16 to make the equation a complete square

$=(r)^2-2(r)(4)+(4)^2-(4)^2+9\\=(r)^2-2(r)(4)+(4)^2-16+9\\=(r)^2-2(r)(4)+(4)^2-7\\=(r+4)^2-7$

So, Solving $r^2-8r+9$ by completing a square gives $(r+4)^2-7$

Keywords: Solve by completing a square

Learn more about Solve by completing a square at:

#learnwithBrainly

7 0

2 years ago