All categories

2 years ago

Please help!! I only have half an hour to do this or I fail math !!!

Mathematics

2 answers:

netineya [11]2 years ago

5 0

Answer:

8+6-10+2+15-3-7-5+2-15-8+10 = 5

Step-by-step explanation:

Sholpan [36]2 years ago

5 0

Mmmmmmmmmmmmmmmmmmmmmmmmmmmmm

You might be interested in

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

3 years ago

What is an equation of the line that passes through the points (-1, 6) and<br> (-1, -5)?

kobusy [5.1K]

Answer:

x = -1

Step-by-step explanation:

(-1 , 6) ; (-1 , -5)

There is no change in x-coordinate values.

So, the is parallel to y-axis

x = -1

4 0

2 years ago

PLEASE HELP THESE ARE MY ONLY POINT ;-; PLEASE

Zolol [24]

Answer:

a) max 12000 , min 0

b) no solution

c) pricing based on profit

Step-by-step explanation:

a) look at the parabola

b) there is more than one x (0)

c) the y intercepts represent his profit based on how much he priced the items at

3 0

2 years ago

The measure of c is .

mina [271]

Answer:

c^2=a^2+b^2

c^2=6^2+8^2

c^2=36+64

c=10

but still do not understand why peoples are asking that basic

4 0

2 years ago

Read 2 more answers

How do you solve 2x+3y=3

Liula [17]

Are you trying to find x? send the whole question xoxo

8 0

2 years ago

Read 2 more answers