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Schach [20]
3 years ago
10

A game spinner has regions that are numbered 1-9. If the spinner is used twice what is the probability that the first number is

a 3 and the second is a 7
Mathematics
1 answer:
KonstantinChe [14]3 years ago
3 0
2/9 right???? because if you spin it you have a 1/9 chance for each number or would the answer be 2/81
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I think I know this much so far for A (but I could be wrong):
Eduardwww [97]
Part A. You have the correct first and second derivative.

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Part B. You'll need to be more specific. What I would do is show how the quantity (-2x+1)^4 is always nonnegative. This is because x^4 = (x^2)^2 is always nonnegative. So (-2x+1)^4 >= 0. The coefficient -10a is either positive or negative depending on the value of 'a'. If a > 0, then -10a is negative. Making h ' (x) negative. So in this case, h(x) is monotonically decreasing always. On the flip side, if a < 0, then h ' (x) is monotonically increasing as h ' (x) is positive.

-------------------------------------------------------------

Part C. What this is saying is basically "if we change 'a' and/or 'b', then the extrema will NOT change". So is that the case? Let's find out

To find the relative extrema, aka local extrema, we plug in h ' (x) = 0
h  ' (x) = -10a(-2x+1)^4
0 = -10a(-2x+1)^4
so either
-10a = 0 or (-2x+1)^4 = 0
The first part is all we care about. Solving for 'a' gets us a = 0. 
But there's a problem. It's clearly stated that 'a' is nonzero. So in any other case, the value of 'a' doesn't lead to altering the path in terms of finding the extrema. We'll focus on solving (-2x+1)^4 = 0 for x. Also, the parameter b is nowhere to be found in h ' (x) so that's out as well. 
6 0
3 years ago
I need some help pls​
natali 33 [55]

Answer:

안녕하세요 멍청한 새끼들. 시험하고 빨리 답이 필요해 .. 네 개년들 고마워

7 0
3 years ago
Simplify: (7x^2 − 8x − 4) + (−2x^2 + 3x + 5) + (5x^2 − 10x − 8)
kramer
Step 1. Simplify
7x^2 - 8x - 4 - 2x^2 + 3x + 5 + 5x^2 - 10x - 8
Step 2. Collect like terms
(7x^2 - 2x^2 + 5x^2) + (-8x + 3x - 10x) + (-4 + 5 - 8)
Step 3. Simplify 

10x^2 - 15x - 7
5 0
3 years ago
What is the algebra expression for this six feet less than the width
Tatiana [17]
So,

"six feet less than"

- 6

"the width"

w

w - 6 

"six feet less than the width (w)"

w - 6
4 0
3 years ago
ABC preschool spun $1,475 on diapers this year.if the diapers cost $25 per box how many boxes did they used?
Aleks04 [339]
Cost = number of objects x price per object

$1,475 = x boxes * $25

x = 1,475/25 = 59 boxes of diapers
7 0
3 years ago
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