3 years ago

How many centimeters long is a 21 board

Mathematics

2 answers:

neonofarm [45]3 years ago

4 0

53.34 is the answer
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scoundrel [369]3 years ago

3 0

21, it says it right in the name.

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Business people have determined that three fourths of the items on a mailing list will change in one year. A business has a mail

Aliun [14]

1695 will be incorrect.

4 0

3 years ago

-8x^2+4x+5=0 using quadratic formula

daser333 [38]

So you want to solve for x?

It would be nice if this would easily factor:
(-4x + 5)(2x +1) = 0    This will not work!

So you need to use the quadratic formula:
a = -8, b = 4, c = 5

$x = \frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

x = (-4 +/- $\sqrt{16-4(-8)(5)}$ )/2(-8)
   = (-4 +/- $\sqrt{16 + 160}$ )/-16
   = (-4 + $\sqrt{176}$ )/-16
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6 0

3 years ago

I want the answer to this problem<br> 3(x+2)-x=38

maks197457 [2]

Answer:

x = 16

Step-by-step explanation:

3(x+2)-x=38

Distribute

3x+6 -x = 38

Combine like terms

2x+6 = 38