help me out with this question ​

Help Me Out With This Question

Answers

Answer 1

Answer:

The size of the sample is 23 scientists.


Related Questions

how to solve 2x+4 = 6x - 10

Answers

Answer:

Step-by-step explanation:

2x + 4 = 6x - 10

Minus 2x on both sides

4 = 4x - 10

Add 10 on both sides

14 = 4x

Divide by 4 on both sides

14/4 = x

x = 14/4

Simplify fraction

x = 7/2 or x = 3 1/2

which of the following represents a line with an undefined slope y=5 x=5. y=5x y=x+5​

Answers

Answer:

B. x = 5

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

A. has a slope.

y = 0x + 5

m = 0

B. has an undefined slope

x = 5

m = undef

C. has a slope.

y = 5x

m = 5

D. has a slope.

y = x + 5

m = 1

Find the median of the following data.
2, 8, 7, 8, 6, 15, 6, 8, 3

Answers

Answer:

7

Step-by-step explanation:

You have to put the numbers in order then find the middle number.

Numbers in order: 2,3,6,6,7,8,8,8,15

Then cross out the numbers on the end (one by one) until you get to the middle number. (If there are two numbers left once you're done then you add them then divide by 2)

Answer:7

Step-by-step explanation:

There is only one copying machine in the student lounge of the business school. Students arrive at the rate of = 40 per hour (according to a Poisson distribution). Copying takes an average of 40 seconds (according to an exponential distribution). What is the percentage of the time that the machine is used?

Answers

Answer:

1

Step-by-step explanation:

Given the following :

Rate of arrival = 40 ( poisson distribution)

Average copying time = 40 seconds (according to an exponential distribution)

Number of machines available = 1

Percentage of time machine is used is Hence ;

Rate of arrival / (Average copying time × number of machines)

40 / (40 × 1)

= 40 / 40

= 1

The function y1(t)=t is a solution to the differential equation t2y′′−t(t+3)y′+(t+3)y=0. ,t > 0; y1(t) = t. Use the method of reduction of order to find a second solution of the given differential equation.

Answers

Answer:

Step-by-step explanation:

Let y(t) = vt..... 1

Differentiating y(t) with respect to t twice will give;

y'(t) = v(1) + v't

y'(t) = v+v't .... 2

For y''(t);

y''(t) = v'+v'(1)+v''t

y''(t) = 2v'+v''t.... 3

Substitute equation 1, 2 and 3 into the differential equation

t²y′′−t(t+3)y′+(t+3)y=0

t²(2v'+v''t) −t(t+3)(v+v't)+(t+3)(vt)=0

t²(2v'+v''t) −(t²+3t)(v+v't)+(t+3)(vt)=0

Open the parentheses

2t²v'+t³v''-(t²v+t³v'+3tv+3t²v')+t²v+3vt= 0

2t²v'+t³v''-t²v-t³v'-3tv-3t²v'+t²v+3vt=0

Collect like terms according to the degree

t³v''+2t²v'-3t²v'-t³v'-t²v+t²v-3vt+3vt=0

t³v''-t²v'-t³v' =0

t²(tv"-v'-tv') = 0

tv"-v'-tv' = 0

tv"-v'(1+t) = 0

Reduce the degree by substituting p as v' to have;

tp'-p(1+t) = 0

tp' = p(1+t)

Separate the variables

p'/p = (1+t)/t

p'/p = 1/t + 1

Integrate both sides of the equation

ln(p) = lnt + t +K

lnp-lnt = t+K

ln(p/t) = t+K

p/t = e^(t+K)

p = Cte^t

v' = Cte^t

Integrate both sides

v = C{te^t - integral (e^t)}

v(t) = C(te^t - e^t}

y(t)/t = C(te^t - e^t}

y(t) = C(t²e^t-te^t)

Since the solution of second order differential equation

y(t) = C1e^at+C2te^t

In comparison the second solution to the differential equation y(t) will be t²e^t

Select the perfect square trinomial from among the options below.
Question 11 options:

A)

x2 + 4x – 4

B)

x2 – 12x + 36

C)

x2 – 2x – 3

D)

x2 + 10x + 20

Answers

Answer:

D

Step-by-step explanation:

                     

Form a polynomial f(x) with real coefficients having the given degree and zeros.
Degree 4; zeros: 1, multiplicity 2; 2i

Answers

Answer:

3

Step-by-step explanation:no

Chase was asked to simplify the expression (-3) ^ 4 * (-3) ^ 9 equals is shown was work below do you agree or disagree with Chase's War explain your reasoning chases work (-3) to the power of 4 * (-3) ^ 9 equals (-3) ^ 36

Answers

Answer:

Step-by-step explanation:

Given the expression chase was asked to simplify as [tex](-3) ^ 4 * (-3) ^ 9[/tex], lets first solve and compare our solution with chases's

Using the law of indices [tex](a) ^ m * (a) ^ n = a^{m+n}[/tex]

[tex]= (-3) ^ 4 * (-3) ^ 9 \\\\= (-3)^{4+9}\\\\= (-3)^{13}[/tex]

Chases reasoning is wrong according to his answer [tex](-3) ^ 4 * (-3) ^ 9 = (-3)^ {36}[/tex]. What chase's did was to multiply the power of -3 together instead of adding. In indices when the bases are equal and we are multiplying, the powers of the bases will be added not multiplies=d as chase's did.

If you have 9/10 of a pound of granola how many 1/5 pound bags can you fill ?

Answers

Answer:

4

Step-by-step explanation:

1/5 is the same as 2/10. How many 2's can you put in 9? You can put 4.5 2's in a 9. However, filling half a bag does not fill the entire bag, so the answer would be 4. You can fill 4 full 1/5 pound bags with 9/10 pounds of granola.

Which of the following describe 86? Select all that apply.
whole number
irrational number
integer
rational number

Answers

Answer:

A rational number is any number that can be written as a ratio of two integers (hence the name!). In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers. ... Irrational, then, just means all the numbers that aren't rational.

Step-by-step explanation:

A rational number is any number that can be written as a ratio of two integers (hence the name!). In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers. ... Irrational, then, just means all the numbers that aren't rational.

Find the sum of the series.
[infinity] ln(1 − 1/n2) n = 2

Answers

Answer:

The sum is -1/2

Step-by-step explanation:

Your question is not too clear to me but if I reframe it, it will turn to this;

Find the sum of In{1 - (1/n^2)} for n >= 2

£n>=2 = In{1 - (1/2^2)} + In{1 - (1/3^2)} + In{1 - (1/4^2)} + ......

£n>=2 = In{1 - (1/4)} + In{1 - (1/9)} + In{1 - (1/16)}

£n>=2 = In(3/4) + In(8/9) + In(15/16)

£n>=2 = -0.287 + -0.117 + -.064 = −0.468

£n>=2 = -0.5 by approximation

£n>=2 = -1/2 is the sum and by evaluation it converge.

What scale factor leaves the image
unchanged?
HELP MEEE PLZZZ

Answers

Answer:

Scale factor of 1

Step-by-step explanation:

A scale factor is a number in which the length of every segment of an original figure is multiplied by to get a new figure similar to it.

A scale factor that is less than 1 would give us a new figure that is reduced and smaller than the original figure. On the other hand, if the scale factor is greater than 1, the new figure would be an enlargement if the original figure.

However, a scale factor = 1 will give us a figure that is congruent to the original figure. No enlargement or reduction in the original size. The figure it image remains the same.

What is the inverse of the function?

H^-1(x)=

Answers

Answer:

H^-1=2/5x-8/5

Step-by-step explanation:

interchange the variables

x=5/2y+4

so 5/2y=x-4

y=2/5x-8/5

H^-1=2/5x-8/5

X+32=124

HELP ME PLEASE ILL MARK BRAINLIEST.

Answers

Answer:

92

Step-by-step explanation:

There are four girls, and four apples in a basket. Each girl took one apple, however, there was still one apple left in the basket. How is that possible?

Answers

Answer:

One girl took the basket.

She took the last apple

while it was in the basket.

Step-by-step explanation:

what is two more than -7

Answers

Answer:

-5

Step-by-step explanation:

-7 +2 = -5

Answer:

-5

Step-by-step explanation:

Because when a number is a negative and you need to add, you subtract instead.

Hope this helps. Plz give brainliest.


Find the binomial coefficient
(46/46)
A.46
B.0
C.undefined
D.1

Answers

Answer:

Step-by-step explanation:

c

What is the next number in the sequence: 3, 9, 21, 45, 93,...?

Answers

Answer:

189 is the next number bacause we multiply 3+3+3=9 now, 9+9+3=21, again ,21+21+3=45 ,again 45+45+3, therefore we observed that this number add itself and its last add 3 so, 93+93+3=189

The next term will be of the sequence is 189.

What is sequence ?

A sequence is an enumerated collection of objects in which repetitions are allowed and order matters. Like a set, it contains members. The number of elements is called the length of the sequence.

According to the question

The sequence:       3,    9,    21,    45,    93,

Next term be x

The sequence:       3,    9,    21,    45,    93,    x

Difference :                 6    12      24     48    

as we can see that

every difference is difference of previous terms *2

i.e

6*2 = 12

12*2 = 24

24*2 = 48

48*2 = 96

Therefore ,

The sequence:       3,    9,    21,    45,    93,    x

Difference :                 6    12      24     48    96

i.e

x = 96 + 93

x = 189

Hence , the next term will be of the sequence is 189.

To know more about sequence here:

https://brainly.com/question/21961097

#SPJ3

a round mirror has a circumference of 87.92 inches. calculate the area of the mirror. use 3.14 for pi. round answers to the nearest hundreth if necessary

Answers

Answer:

615.44 in²

Step-by-step explanation:

Use the circumference formula, C = 2[tex]\pi[/tex]r

Plug in the circumference and pi to solve for the radius, r:

C = 2[tex]\pi[/tex]r

87.92 = 2(3.14)r

87.92 = 6.28r

14 = r

Then, use the area formula, A = [tex]\pi[/tex]

A = 3.14(14)²

A = 615.44 in²

So, the area of the mirror is 615.44 in²

Jeene and her friends were selling cookies. They sold four more boxes second week in the than they did the first week . On the third week they doubbled the sale of their second week. Although they sold a total of 352 boxes how many boxes that they sell in the third week?​

Answers

Answer:

i did 352 x 2 witch was 704 so i believe that it is 704 bc it said they sold double the sale of their second week

hoped this helped let me know if it did

Answer:

Step-by-step explanation:i did 352 x 2 witch was 704 so i believe that it is 704 bc it said they sold double the sale of their second week

hoped this helped let me know if it did

Which ratio is equivalent to 3:7 is it 6:7, 3:21, 24:56, or 15:30​

Answers

24:56 is the correct answer. if you divide both those numbers by 8 ( 24:56 ), you get 3:7

Answer:

24:56 is equivalent to 3:7

Step-by-step explanation:

All you have to do is divide 24:56 by 8.

1. 24 ÷ 8 = 3

2. 56 ÷ 8 = 7

And there you go = 3:7

please answer or i move down!!!!!!!!!!!!!!!!!!!

Answers

Answer:

180°-(68°+37°)→→→→→→→→sum of angles on a straight line.

180-105=75°

Point to be kept in mind : the sum of angle of a straight line is 180°!

Thus,

68+ X + 37 = 180

=> 105 + X = 180

=> X = 75°

Question 3 12.5 pts In a circle, the coordinates of the endpoints of a diameter are (4, 5) and (10, 1). Find the coordinates of the center of the circle. center of the circle : (x, y) =( ​

Answers

D is most logical because

A proportional relationship is a relationship between equivalent ratios. Imagine that ice cream costs $2 per scoop. If you get one scoop of ice cream, you’ll pay $2. If you get two scoops, you’ll pay $4, and for three scoops you’ll pay $6. These ratios of scoops to prices are equivalent. Therefore, the relationship between number of scoops and total price is proportional. To find out the total price of your ice cream, you can always multiply the number of scoops you’re getting by the same number, 2. Which of these can be described with a proportional relationship? A An athlete runs 1 mile in 7 minutes and another mile in 7.5 minutes. B An athlete does 10 push-ups for every 1 mile she runs. C An athlete runs 2 miles and does 25 push-ups. D An athlete runs 5 miles 3 times a week.

Answers

Answer:

B. An athlete does 10 push-ups for every mile she runs.

Step-by-step explanation:

10/1  ->  20/2  ->  30/3

What is the range of the function?
A. [-2, 11)
B. (-4.0)
C. (-4, 4)
D. [4, 11)

Answers

Answer:

I think it should be D tell me if you got it right

5x + 8 is an example of

Answers

5x + 8 is an example of an expression

PLEASE HELP! I ONLY HAVE 10 MINUTES LEFT!

Consider the sequence of steps to solve the equation:

Answers

Answer:

Multiplacation

Step-by-step explanation:

It is the multiplacation roperty pbecauseyou are multipyling 10 times x and 3.

Find the distance between the two points. Round your answer to the
nearest tenth.
YA
(-3,5)
(7,1)

Answers

Answer:

The answer is

10.8 units

Step-by-step explanation:

The distance between two points can be found by using the formula

[tex]d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-3,5) and (7,1)

The distance between them is

[tex]d = \sqrt{( { - 3 - 7})^{2} + ({5 - 1})^{2} } \\ = \sqrt{ ({ - 10})^{2} + {4}^{2} } \\ = \sqrt{100 + 16} \\ = \sqrt{116} \\ = 2 \sqrt{29} \\ \: \: \: \: \: \: \: \: = 10.770329[/tex]

We have the final answer as

10.8 units to the nearest tenth

Hope this helps you

Find the quotient: 30 √510

Answers

Answer:

im pretty sure the quotent is 17

Step-by-step explanation:

hope this helps!

25 POINTS 2 MATH QUESTIONS NEED HELP ASAP

Answers

Answer:

it was b

Step-by-step explanation:

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