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statuscvo [17]
1 year ago
8

(b) Find z such that 39% of all observations from a standard normal distribution are greater than z. (Enter your answer rounded

to two decimal places.)
Mathematics
1 answer:
vova2212 [387]1 year ago
3 0

For 39% of all observations that are greater than z on the normal distribution table, the percentage of observations that are lesser than z is

100 - 39 = 61%

The proportion is 61/100 = 0.61

From the normal distribution table, the value of z corresponding to this proportion is 0.28

Thus, the required value of z is 0.28

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If a,b,c,d, and e are non negative such that x^6-289x^4-x^2+289=(x-a)(x+b)(x_c)(x+d)(x^2+ex+1), what is the value of a+b+c+d+e?
Irina18 [472]

Answer:

36

Step-by-step explanation:

Hello,

If X=x^2 it becomes

X^3-289X^2-X+289=(X^2-1)(X-289)

and 289=17^2

X^2-1=(X-1)(X+1)=(x^2-1)(x^2+1)=(x+1)(x-1)(x^2+1) \\\\x^2-289=x^2-17^2=(x-17)(x+17)

So,

x^6-289x^4-x^2+289=(x^2-1)(x^2+1)(x^2-289)=(x-1)(x+1)(x+17)(x-17)(x^2+1)

a = 1

b = 1

c = 17

d = 17

e = 0

Then a + b + c + d + e = 36

Thanks

3 0
3 years ago
-10 = y/11 - 13<br><br> solve for y
Flauer [41]

Answer:

10=y/11-13

We move all terms to the left:

-10-(y/11-13)=0

-y/11+13-10=0

We multiply all the terms by the denominator

-y+13*11-10*11=0

We add all the numbers together, and all the variables

-1y+33=0

We move all terms containing y to the left, all other terms to the right

-y=-33

y=-33/-1

y=+33

6 0
3 years ago
Read 2 more answers
Anyone know the answer to this?
kiruha [24]

Answer:

42

Step-by-step explanation:

Angle ABD = Angle CBD + Angle ABC

You know ABD is 70, CBD and ABC are in terms of x

70 = 5x + 13 + 3x + 33

70 - 13 - 33 = 8x

24 = 8x

3 = x

Replacing x in Angle ABC:

3 * 3 + 33 = 42

6 0
4 years ago
The price of a pair of shoes was reduced from $20 to $14
sdas [7]

Answer: D 30%

Step-by-step explanation:amount change/amount start x 100%

(20-14)/20=.3

.3 x 100% = 30%

3 0
2 years ago
Read 2 more answers
If the point P(-4/5,y) lies on the unit circle and P is in the third quadrant, what does y equal? If necessary, use the slash ma
aleksandr82 [10.1K]
We use the fact that x2+y2=1  This is the equation of the unit circle.
We know that x=-4/5, so plug this in and solve for y
x2+y2=1 <span>(−4/5)^2+y2=1</span> 16/25+y2=1 y2=1−16/25 y2=9/25 <span>y=−square root of 9/ 25</span>
y = -3/5
8 0
4 years ago
Read 2 more answers
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