2 years ago

Which number completes the square? x2 − 20x + _____?

Mathematics

1 answer:

OverLord2011 [107]2 years ago

4 0

100, because, x^2 - 20x + 100 = ( x - 10 )^2;

You might be interested in

5|2x + 4| – 3 = -3<br> Please help!

stellarik [79]

The answer is X=-2
Hope it helps!

3 0

2 years ago

Find the value x in the figure :

Leno4ka [110]

Answer:

${ \bf{perimeter = 2(length + width}} \\ \\ { \tt{28 = 2((x + 2) + (x + 6))}} \\ \\ 14 = 2x + 8 \\ 2x = 6 \\ { \tt{x = 3}}$

5 0

2 years ago

Read 2 more answers

Solve the following system algerbraically: y=-3(x-2) squared+4 y=-6x+16

pishuonlain [190]

$y = - 3(x - 2) ^{2} + 4$
$y = - 6x + 16$
distribute the -3 and the square into the first equation
$y = - 3x ^{2} + 12x - 8$
$y = - 6x + 16$
multiply the second equation by 2
$y = - 3x ^{2} + 12x - 8$
$y = - 12x + 32$
add the equations together
$y = - 3x ^{2} + 24$
factor out -3
$y = - 3(x ^{2} - 8)$
factor inside parenthesis
$y = - 3(x + \sqrt{8} )( x - \sqrt{8})$
refine
$y = - 3(x + 2 \sqrt{2} )(x - 2 \sqrt{2} )$

8 0

2 years ago

Plz help me I don’t understand this

Firlakuza [10]

The answer should be 31/10

3 0

2 years ago

Read 2 more answers

Find the probability P(not E) if P(E) = 0.43.

Artyom0805 [142]

Answer:

P(not E)= 0.57

Step-by-step explanation:

P(not E)= 1-0.43

P(not E)= 0.57

8 0

2 years ago