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1 year ago

Help with this homework

Mathematics

1 answer:

Stolb23 [73]1 year ago

5 0

It is just white so I can’t help I’m sorry

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48 = 2(2w)+(4+2w)2. What Is w

crimeas [40]

Hello from MrBillDoesMath!

Answer:

w = 5

Discussion:

48 = 2 (2w) + (4 + 2w)2 =>

48 = 4w + 4*2 + (2w)*2 =>

48 = 4w + 8 + 4w => as 4w + 4w = 8w

48 = 8w + 8 => subtracting 8 from each side

48 - 8 = 8w => divide both sides by 8

(48 -8 )/8 = w =>

40/8 = w =>

w = 5 =>

Check: 2(10) + ( 4 + 2*5)*2 = 20 + 14*2 = 20 + 28 = 48

Thank you,

MrB

6 0

2 years ago

According to government data, 75% of employed women have never been married. Rounding to 4 decimal places, if 15 employed women

blagie [28]

Answer:

We are given that According to government data, 75% of employed women have never been married.

So, Probability of success = 0.75

So, Probability of failure = 1-0.75 = 0.25

If 15 employed women are randomly selected:

a. What is the probability that exactly 2 of them have never been married?

We will use binomial

Formula : $P(X=r) =^nC_r p^r q^{n-r}$

At x = 2

$P(X=r) =^{15}C_2 (0.75)^2 (0.25^{15-2}$

$P(X=2) =\frac{15!}{2!(15-2)!} (0.75)^2 (0.25^{13}$

$P(X=2) =8.8009 \times 10^{-7}$

b. That at most 2 of them have never been married?

At most two means at x = 0 ,1 , 2

So, $P(X=r) =^{15}C_0 (0.75)^0 (0.25^{15-0}+^{15}C_1 (0.75)^1 (0.25^{15-1}+^{15}C_2 (0.75)^2 (0.25^{15-2}$

$P(X=r) =(0.75)^0 (0.25^{15-0}+15 (0.75)^1 (0.25^{15-1}+\frac{15!}{2!(15-2)!} (0.75)^2 (0.25^{15-2})$

$P(X=r) =9.9439 \times 10^{-6}$

c. That at least 13 of them have been married?

P(x=13)+P(x=14)+P(x=15)

$={15}C_{13}(0.75)^{13} (0.25^{15-13})+{15}C_{14} (0.75)^{14}(0.25^{15-14}+{15}C_{15} (0.75)^{15} (0.25^{15-15})$

$=\frac{15!}{13!(15-13)!}(0.75)^{13} (0.25^{15-13})+\frac{15!}{14!(15-14)!} (0.75)^{14}(0.25^{15-14}+{15}C_{15} (0.75)^{15} (0.25^{15-15})$

$=0.2360$

8 0

2 years ago

Find the unit rate!!!<br><br> WILL GIVW BRAINLIEST!!!!

Whitepunk [10]

Answer:

10 to 2

Step-by-step explanation:

Please give the B

I would appreciate it :)

7 0

2 years ago

Bonds are a(n) _______________ instrument.

stiks02 [169]

Answer:

indebtedness

Step-by-step explanation:

3 0

3 years ago

11x = 57 pls tell i will give extra points for correct answer

scZoUnD [109]

Answer:

x=5 2/11

Step-by-step explanation:

its either 5 2/11 or 57/11

6 0

1 year ago

Read 2 more answers