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Snowcat [4.5K]
3 years ago
12

Express x2 -5x + 8 in the form ( x-a) squared +b

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
3 0

Answer:

x^2 - 8x = -5

x^2 -8x +16 =-5 +16

( x-4)^2 = 11

x^2 - 8x+5 = (x-4)^2 -11

Step-by-step explanation:

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y=0

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85.11

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Can I have your help​
Volgvan

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3/5

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sin is opposite divided by the hypotenuse ( longest side)

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2 years ago
Solve for <br> (6x + 9)/3 =​
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Hello!

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3 0
3 years ago
In how many ways can 6 competitors finish a race assuming there are no ties?In how many ways can we sit n people on r &lt; n cha
VLD [36.1K]

Answer:  a) 720, b) ^nC_r=\dfrac{n!}{(n-r)!r!} c) 336, d) 30240 e) 120.

Step-by-step explanation:

Since we have given that

a) Number of competitors  = 6

We need to find the number of ways that 6 competitors can finish a race and there are no ties.

So, Number of ways would be

6!=720

b) number of people = n

Number of chairs = r (r<n)

so, the number of ways we can sit n people on r<n chairs is given by

^nC_r=\dfrac{n!}{(n-r)!r!}

c) If there are three awards :

Gold, silver, bronze.

We need to find the number of ways that these medals can be awarded.

Number of ways is given by

^8P_3\\\\=336

d) Number of 5-digit zip codes are possible is given by

^{10}P_5=30240

e) Number of poeple = 10

Number of people required in committee = 3

Number of different 3 person committee that are selected from 10 people is given by

^{10}C_3=120

Hence, a) 720, b) ^nC_r=\dfrac{n!}{(n-r)!r!} c) 336, d) 30240 e) 120.

6 0
3 years ago
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