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pochemuha
3 years ago
15

Expanded form for 23.5

Mathematics
2 answers:
Mrac [35]3 years ago
8 0

23.5 = (2 x 10) + (3 x 1) + (5/10)


Katarina [22]3 years ago
7 0

Find the expanded form. Isolate each number. Remember the place values.

23.5 = 20 + 3 + 0.5

20 + 3 + 0.5 is your answer

hope this helps

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The correct answer is D
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Question 1: b) Find the total distance from A to B

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rosijanka [135]

Answer:

Step-by-step explanation:

Our equations are

y = -3x^2 + x + 12\\y = 2x^2 - 6x + 5\\y = x^2 + 7x - 11\\y = -x^2 - 8x - 16\\

Let us understand the term Discriminant of a quadratic equation and its properties

Discriminant is denoted by  D and its formula is

D=b^2-4ac\\

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b= the coefficient of x

c = constant term

Properties of D: If D

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iii) D<0 , no real root

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y = -3x^2 + x + 12\\a=-3 , b =1 , c =12\\D=1^2-4*(-3)*(12)\\D=1+144\\D=145\\D>0 \\

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y = 2x^2 - 6x + 5\\

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y = -x^2 - 8x - 16\\a=-1,b=-8,c=-16\\D=(-8)^2-4*(-1)*(-16)\\D=64-64\\D=0\\

Hence we have one real root to this quadratic equation.

7 0
3 years ago
Choose the best answer.
tekilochka [14]
I believe its D, 7.5% But check it with other sources because IM not 100% positive! 
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<span>So not only is Store A a better deal, but they'll save you $15.16-$11.78=$3.38 dollars. </span>
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