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Mazyrski [523]
3 years ago
7

Please answer this question

Mathematics
2 answers:
bekas [8.4K]3 years ago
6 0

Answer:

the third one

Step-by-step explanation:

Svetlanka [38]3 years ago
3 0

Answer:

I think the 3rd one

Step-by-step explanation:

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Only about 75% of all donated human blood can be used in hospitals. The remaining 25% cannot be used because of various infectio
Tresset [83]

Answer:

a) 0.02739

b) 0.00034

Step-by-step explanation:

If it is believed that at least 6 of the 10 pints are usable, then the 75% of “good” pints that can be used from this sample reduces to 60% of 75% = 0.6*0.75 = 0.45

Now for this sample we use a binomial distribution with probability of “success” (finding a “good” pint) of 0.45% and

the probability of getting exactly r good pints out of 10 is  

\bf \binom{10}{r}0.45^r(1-0.45)^{10-r}=\binom{10}{r}0.45^r0.55^{10-r}

where

\bf \binom{10}{r} are combinations of 10 taken r at a time.

a)

The probability that at least 8 of the pints are usable is P(r>7)

\bf \binom{10}{8}0.45^80.55^2+\binom{10}{9}0.45^90.55^1+\binom{10}{10}0.45^{10}0.55^0=\\0.02289+0.00416+0.00034=0.02739

b)

Here we want P(r=10)

\bf \binom{10}{10}0.45^{10}0.55^0=0.00034

7 0
3 years ago
If ab=2x+6 and bc=2x+5 what is the length of ac if ac=2x
Finger [1]

x=-5.5, AB=-5, BC=-6, AC=-11

8 0
3 years ago
Y=2x+4 I need what the graph would look like. Please help me!
Veseljchak [2.6K]

Answer: I attached a picture of the graph

6 0
3 years ago
Read 2 more answers
Formulate but do not solve the following exercise as a linear programming problem. Kane Manufacturing has a division that produc
earnstyle [38]

Answer:

z  - 2*x   -  1.5*y   =  0   maximize

subject to:

3*x  +  5*y   ≤  800

8*x  + 3*y   ≤   1200  

x, y  >  0

Step-by-step explanation:

Formulation:

Kane Manufacturing produce  x  units of model A (fireplace grates)

and  y units of model B

                  quantity   Iron cast lbs    labor (min)   Profit $    

Model  A          x               3                      8                  2

Model  B          y               5                      3                  1.50

We have   800 lbs of iron cast  and 1200 min  of labor available

We need to find out how many units  x  and units y per day to maximiza profit

First constraint   Iron cast lbs     800 lbs

3*x  +  5*y   ≤  800             3*x  +  5*y  +  s₁   =  800

Second constraint  labor    1200 min available

8*x  + 3*y   ≤   1200              8*x  + 3*y           + s₂  =  1200  

Objective function

z  =  2*x  +  1.5*y         to maximize    z  - 2*x   -  1.5*y   =  0  

x > 0   y  >  0

The first table is  ( to apply simplex method )

z         x        y       s₁      s₂       Cte

1        -2       -1.5     0      0          0

0        3         5       1       0        800

0        8         3       0       1       1200

7 0
4 years ago
Which system of equations is graphed below?​
Ilia_Sergeevich [38]
There is no image attached
6 0
3 years ago
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