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vovikov84 [41]
3 years ago
15

Expand. If necessary, combine like terms. (x-2)^2=

Mathematics
1 answer:
diamong [38]3 years ago
4 0

Answer:

x^2-4x+4

Step-by-step explanation:

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How do you use the half angle formula for <br> sin (5π/12)?
Mkey [24]
The half angle formula is:
sin x/2 = +/- √ (( 1-cos x ) / 2 )
5π/12 = 5π/6 : 2
sin 5π/12 = +/- √(( 1 - cos ( 5π/6)) / 2 ) 
cos 5π/6 = cos 150° = -√3/2
sin (5 \pi /12) = \sqrt{ \frac{1+ \sqrt{3}/2 }{2} } = \\  =\sqrt{ \frac{2+ \sqrt{3} }{4} } = \\ =  \frac{ \sqrt{2+ \sqrt{3} } }{2}  =
≈ 0.966 ( this is sin 5π/12 )

7 0
4 years ago
In the image below, a = 8 cm and b = 9 cm.
Xelga [282]

Answer:

225 square cm

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
. During a year, the probability a structure will be damaged by an earthquake (A) is 0.02, that it will be damaged by a hurrican
enyata [817]

Answer:

0.9506

Step-by-step explanation:

Pr(A) = 0.02

Pr(B) = 0.03

Pr(both) = 0.007

So,

Pr(Not A) = 1 - Pr(A)

               = 1 - 0.02

               = 0.98

Pr(Not B) = 1 - Pr(B)

               = 1 - 0.03

                = 0.97

Pr(Not by both) = 1 - Pr(both)

                          = 1 - 0.007

                          = 0.993

Thus,

Pr(Not B) or Pr(Not A) = 0.97 × 0.98

                                    = 0.9056

∴ the probability that the house would not be damaged by a hurricane or an earthquake during the year is 0.9506.

7 0
3 years ago
I'm having trouble on ixl here is what I have to do
Sophie [7]

Answer:

6(9r-7)

Step-by-step explanation:

54r–42

Both 54 and 43 can be divided by 6

54/6 =9  and 42/6 =7

6*9r - 6*7

Factor out the 6

6(9r-7)

8 0
3 years ago
Read 2 more answers
Which is one one way to check 102 ÷ 6 = <br>17
sleet_krkn [62]

One way to check if 102 ÷ 6 = 17 is by focusing on the left side of the equation.


102 ÷ 6 can be converted into \frac{102}{6}


\frac{102}{6} can be simplified, lets start by dividing the numerator and denominator by 2.

\frac{102/2}{6/2} = \frac{51}{3}

\frac{51/3}{3/3} = \frac{17}{1}

\frac{17}{1} can be rewritten as 17.

5 0
4 years ago
Read 2 more answers
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