If the cost is 4.25 per pound, create a relation that represents the amount spent, A, per pound,p per cherries

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

4 years ago

A farm has chickens and cows. All the cows have 4 legs and all the chickens have 2 legs.

Sladkaya [172]

Answer:

oh dude this is such a cool riddle i think the answer is ..... 62

Step-by-step explanation:

if there are 82 legs .... and you said there are 5 cows and cows have four legs so that is gonna be 5x4 which equals to 20 and then we can subtract 20 with 82 and that will give the answer as ..... 62 !!!!!!! yeaaaaaa

make me brainliest or whatever .... i.d.k .... just kidding make me brainliest NOW !!!!!! please

5 0

3 years ago

A sequence can be represented by the formula t(n)=6; t(n+1)=3*t(n). write the first 4 terms of the sequence. what would be an ex

Kamila [148]

Answer:

Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,... ... CCSS Math: HSF. ... plug in the number of the term we are interested in, and we will get the value of that term. ... Writing explicit formulas ... Check out, for example, the following calculations of the first few terms.

Step-by-step explanation:...

8 0

4 years ago

3/2=4/3x+2/3 What does X equal?

Anna71 [15]

Answer:

x = 30/48 or x = 0.625

Step-by-step explanation:

3/2 = 4/3x + 2/3

Convert to common denominator

9/6 = 8/6x + 4/6

subtract 4/6 from both sides

9/6 - 4/6 = 8/6x + 4/6 - 4/6

5/6 = 8/6x

Divide by 8/6

5/6 x 6/8 = x

30/48 = x

x = 30/48

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

5 0

3 years ago

Solve the system by the elimination method. -2x + y + 6 = 0 2x + y - 8 = 0 When you eliminate x, what is the resulting equation?

Natali5045456 [20]

For this case we have the following system of two equations with two unknowns:

$-2x + y + 6 = 0\\2x + y-8 = 0$

Adding both equations we have to eliminate the variable "x":

$y + y + 6-8 = 0$

Adding common terms, keeping in mind that different signs are subtracted and the sign of the major is placed:

$2y-2 = 0\\2y = 2$

Answer:

$2y = 2$

Option A

5 0

3 years ago