Giving brainlist for the correct answer

Mathematics

2 answers:

8_murik_8 [283]3 years ago

6 0

Answer:

A = 11.5 (less)

B. 55 (more)

C. 25 (more)

D. 17 (less)

Step-by-step explanation:

also if you dont mind giving me brainliest im trying to rank up, im 1 away. only if u dont mind

Dmitrij [34]3 years ago

3 0

Answer:

C and B are more.

Step-by-step explanation:

I am fairly sure that the question is asking which is more than 23? I'll just explain them all anyway. A is 5 plus 6.5, or 11.5. B is 55, which is also more than 23, but still going. C is 25. D is 17.

Hope this helps!!

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Solve x2 – 4x – 9 = 29 for x.

Irina-Kira [14]

$x^2 - 4x - 9 = 29 \\ x^2 - 4x - 9 - 29 = 0 \\ x^2 - 4x - 38 = 0 \\ x= \frac{-b \pm \sqrt{ b^{2} -4ac} }{2a} 
$ ; where a = 1, b = -4 and c = -38
$x= \frac{-(-4) \pm 
\sqrt{ 
(-4)^{2} -4 \times 1 \times -38} }{2 \times 1} \\ = \frac{4 \pm \sqrt{ 16 +152} }{2} \\ =\frac{4 \pm \sqrt{ 168} }{2} \\ =\frac{4 \pm 
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8 0

3 years ago

Read 2 more answers

-8x+5-2x-4+5x when x=2

julia-pushkina [17]

Answer:

-9

Step-by-step explanation:

Just substitute in 2 for x

-8(2) + 5 - 2(2) - 4 + 5(2)

-16 + 5 - 4 - 4 + 10

-11 - 4 - 4 + 10