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2 years ago

PlZ help pleased I need an answer now

Mathematics

2 answers:

monitta2 years ago

8 0

The answer is 1/12 I hope this helps!

shutvik [7]2 years ago

3 0

Answer:

1/12

Step-by-step explanation:

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Please i'm literly crying help me on this problem: What is the inverse of y=3(1/3)^x?

Evgesh-ka [11]

Answer:

USe Symbolab Calculator Trust me it really helps don't worry

Step-by-step explanation:

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2 years ago

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Question 4 options: Find the mean and standard deviation for a binomial distribution with 680 trials and a probability of succes

lys-0071 [83]

Answer:

Mean for a binomial distribution = 374

Standard deviation for a binomial distribution = 12.97

Step-by-step explanation:

We are given a binomial distribution with 680 trials and a probability of success of 0.55.

The above situation can be represented through Binomial distribution;

$P(X=r) = \binom{n}{r}p^{r} (1-p)^{n-r} ; x = 0,1,2,3,.....$

where, n = number of trials (samples) taken = 680 trials

r = number of success

p = probability of success which in our question is 0.55

So, it means X ~ $Binom(n=680, p=0.55)$

Now, we have to find the mean and standard deviation of the given binomial distribution.

Mean of Binomial Distribution is given by;

E(X) = n $\times$ p

So, E(X) = 680 $\times$ 0.55 = 374

Standard deviation of Binomial Distribution is given by;

S.D.(X) = $\sqrt{n \times p \times (1-p)}$

= $\sqrt{680 \times 0.55 \times (1-0.55)}$

= $\sqrt{680 \times 0.55 \times 0.45}$ = 12.97

Therefore, Mean and standard deviation for binomial distribution is 374 and 12.97 respectively.

3 0

3 years ago

Last season Ellen and Janet together won 32 tennis matches Ellen won 6 more than then Janet How many more matches did Ellen win

joja [24]

T = J + E

T = J + (J + 6)

T = 32

32 = 13 + (13 + 6)

32 = 13 + 19

32 = 32

Ellen won 19 matches.

8 0

3 years ago

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A rectangular field is two times as long as it is wide. If the perimeter of the field is 450 feet, what are the dimensions of th

lys-0071 [83]

Hi There,

----------------------------------------

We Know:

Total Perimeter = 450 feet

Length is 2 times the width.

----------------------------------------

Solution:

Length = 150

Width = 75

75 x 2 = 150

150 + 150 + 75 + 75 = 450

----------------------------------------

Answer:

Length = 150 feet.

Width = 75 feet.

----------------------------------------

Hope This Helps :)

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2 years ago

Find the midpoint of the segment between the points (8,-10) and (-10,-8)

Delvig [45]

Answer:

(-1, -9)

Step-by-step explanation:

Recall that for 2 points (x1, y1) and (x2,y2)

the midpoints are given by

x ordinate = $\frac{x1+x2}{2}$

y ordinate = $\frac{y1+y2}{2}$

In our case x1 = 8, y1 = -10, x2 = -10, y2=-8

x ordinate = $\frac{x1+x2}{2}$ = [8 + (-10) ] / 2 = -1

y ordinate = $\frac{y1+y2}{2}$ = [-10 + (-8) ] / 2 = -9

hence midpoint is (-1, -9)

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2 years ago

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