(a) An article in a medical journal suggested that approximately 14% of such operations result in complications. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.08

Answer:

A. The solution is (1, -3)

Step-by-step explanation:

4x - 5y = 19

y = x - 4

Since the second equation already has y isolated, you can just plug that into the first equation:

4x - 5(x - 4) = 19

4x - 5x + 20 = 19

-x = -1

x = 1

Take your x value from the previous equation answer and plug that into the second equation:

y = (1) - 4

y = -3

Final solution:

(1, -3)

If you really want to know if you're correct, just do a LS/RS check for both equations:

4(1) - 5(-3) = 19

19 = 19

LS = RS

-3 = 1 - 4

-3 = -3

LS = RS

Answer:

A : 1,-3

so you substitute y= x-4 into 5y to make the equation look like 4x-5(x-4)=19 then you do -5 times (x-4) which should get you -5x and 20 so now the equation looks like this 4x-5x + 20 =19 then you combine like terms like 4x-5x which should get you -1x after you do that you subtract 20 from both sides of the equation and that should also get you -1 After you do all of that you divide by 1 on both sides and them you get your x term which is x= 1 now you can plug that into this equation y=x-4 now that equation will be y=1-4 and that is y=-3 so your answer is 1,-3

IF YOU DONT WANT TO DO ALL OF THAT BY HAND YOU CAN ALWAYS PLUG THAT EQUATION INTO DESMOS GRAPHING CALCULATOR AND YOU JUST HAVE TO FIND THE POINT WHERE THE LINE INTERSECTS

Answer:

12:1

Step-by-step explanation:

Answer:

12:1

Step-by-step explanation:

Because 12 is the amount of cookies to the ratio of hours which is 1 therfore 12:1

Answer:

4.85

Step-by-step explanation:

Answer:

4.85

Step-by-step explanation:

[2.1 + 4 - 1.25]

= (6.1 - 1.25)

=4.85

Answer:

Value of X is 13

The value of x is 13 in given figure, which is correct option (A).

A rhombus is defined as a special type of parallelogram that is a quadrilateral with two pairs of equal parallel sides. it fulfills the requirements of a parallelogram.

The perimeter of a rhombus is defined as the total length of its region. The four sides of a rhombus are equal, its perimeter is calculated by multiplying the length of its side by 4.

Perimeter of a rhombus = 4 × A units,  where ‘A’ is the length of the side of the rhombus

In figure ABCD is a rhombus

Given as :

Angle ∠ A = (5x + 25)

Angle ∠ D = (7x - 1)

Since adjacent angles of a rhombus add up to 180°

(5x + 25) + (7x - 1) = 180 and both equal

So, 5x + 25 = 7x - 1

Rearrange the terms in the equation,

7x - 5x = 1 +25

2x = 26

x = 13

Hence, the value of x is 13 in given figure.

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Answer:

the action of deposing someone, especially a monarch.

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Given that:

Mean temperature (m) = 36°C

Standard deviation (s) = 3°C

Temperature between 39°C and 42°C

Temperature < 39°

Probability of temperature < 39

P(x < 39)

The standardized score (Z) :

Z = (x - m) / s

Z = (39 - 36) / 3 = 1

p(Z < 1) = 0.84134 ( Z probability calculator)

Temperature < 42°

Probability of temperature < 42°

P(x < 42)

The standardized score (Z) :

Z = (x - m) / s

Z = (42 - 36) / 3 = 2

p(Z < 2) = 0.97725 ( Z probability calculator)

p(Z < 2) - p(Z < 1) = 0.97725 - 0.84134 = 0.13591

Hence, number of days in June = 30

Expected number of days = 30 * 0.13591 = 4.0773 = 4 (nearest whole number)

Answer:

(x-10)^2 + (y-2)^2 = 49

Step-by-step explanation:

I'm assuming that 10-2 means (10,2)

Equation of circle:

(x-a)^2 + (y-b)^2 = r^2

Plugging in the values that we know:

(x-10)^2 + (y-2)^2 = 7^2

(x-10)^2 + (y-2)^2 = 49

Hope this helps!

a) The average rate of change of annual sales between 2017 and 2018 is 1.08%

b) The average rate of change of annual sales between 2017 and 2020 is -3.27%

From the question, we are to determine the average rate of change of annual sales

a) Between 2017 and 2018

Sale in 2017 = 367

Sale in 2018 = 371

The change in sales between the years = 371 - 367

Change in sales between the years = 4

Thus,

Average rate of change = 4/367 × 100%

Average rate of change = 1.09%

Hence, the average rate of change of annual sales between 2017 and 2018 is 1.08%

b) Between 2017 and 2020

Sale in 2017 = 367

Sale in 2020 = 355

Change in sales between the years = 355 - 367

Change in sales between the years = -12

Thus,

Average rate of change = -12/367 × 100%

Average rate of change = -3.27%

Hence, the average rate of change between 2017 and 2020 is -3.27%

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Answer:

alt answer to give ya brainliest nxsdsvfkbjnvbc

Step-by-step explanation:

cnrgnsdmx

Answer:

y ≤ 3x − 1

y ≤ −x + 4

Step-by-step explanation:

The function model that represents the amount of battery left after a period  of time is y = 1 ₋ 10%x

Given, Miranda bought a new cell phone which is consuming battery at a rate of 5% for every half an hour.

We are required to establish a function model that depicts how much battery is remaining after a certain amount of time.

Let y represent the amount of battery left.

and x represent the number of hours.

Then 5% per half an hour = 5% × 2 = 10%

Now frame the function model:

The amount of battery left = 1 ₋ (rate percent at which battery is being consumed)(The number of hours left)

⇒ y = 1 ₋ 10%(x)

⇒ y = 1 ₋ 10%x

As a result, we obtained the function model for the battery's remaining capacity as y = 1 ₋ 10%x

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Answer:

If the month is march then the next month is February

Step-by-step explanation:

Answer: 4 busses if each bus only hold 45 passengers at most.

Step-by-step explanation:

120 students

23 teachers=143 people

143 divided by 3 busses is only 47 so 3

busses wouldn’t be enough

Answer:

x= -8

Step-by-step explanation:

4(x-1)-2(3x+5)=-3+1

4x-4-6x-10=2

-2x-14=2

-2x=16

x= -8

Answer:

Si quiere decir en un gráfico, busque cuántas unidades se eleva la coordenada y, a continuación, se ejecuta (izquierda o derecha).

Si algo no suena lo siento mi español es malo. ;--;

Answer:

with what

Step-by-step explanation:

We need to know about rational and irrational numbers to solve the problem. Jacob is incorrect because the product of a rational and irrational number is always irrational.

Rational numbers are numbers that can be represented as p/q , p and q are integers where q is not equal to zero. Irrational numbers are real numbers that are not rational numbers, that cannot be represented as a division of two integers. When a rational and irrational number is multiplied, it always gives an irrational number. Let me use an example to explain this

2 is a rational number and [tex]\sqrt{2}[/tex] is an irrational number, the product of these two numbers is [tex]2\sqrt{2}[/tex] which is an irrational number.

Therefore we see that Jacob was wrong because the product of a rational and an irrational is always irrational.

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Answer:

16

Step-by-step explanation:

please mark me brainliest and 5 star

Answer:

16

Step-by-step explanation:

You add all the sides together hope it helps pls mark brainliest

Answer:

6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

====================================================

Work Shown:

n = number of sides = 9

S = sum of the interior angles of any polygon with n sides

S = 180(n-2)

S = 180(9-2)

S = 180(7)

S = 1260

Answer:

yes x=1

Step-by-step explanation:

x[tex]x^{2} -2x+1=0\\(x-1)^{2}=0 x-1=0 \\x=1[/tex]

Answer: y=-3/4x+2

Step-by-step explanation:

y=mx+b

y=-3/4x+b

-4=-3/4(8) +b

-4=-6+b

b=2

y=-3/4x+b

y=-3/4x+2

Answer:a> [tex]-\frac{7}{18}[/tex]

Step-by-step explanation:

(6a+3)3>2

Divide both sides by 3. Since 3 is positive, the inequality direction remains the same.

[tex]6a+3 > \frac{2}{3}[/tex]

Subtract 3 from both sides.

[tex]6a > \frac{2}{3} -3[/tex]

Convert 3 to fraction  [tex]\frac{9}{3}[/tex]

[tex]6a > \frac{2}{3} -\frac{9}{3}[/tex]

Since  [tex]\frac{2}{3} \frac{9}{3}[/tex]have the same denominator, subtract them by subtracting their numerators.

[tex]6a > \frac{2-9}{3}[/tex]

Subtract 9 from 2 to get −7.

[tex]6a > -\frac{7}{3}[/tex]

Divide both sides by 6. Since 6 is positive, the inequality direction remains the same.

[tex]a > \frac{-\frac{7}{3} }{6}[/tex]

Express  [tex]a > -\frac{7}{3\frac{6}{1} }[/tex]   and 6/1=6  as a single fraction.

[tex]a > \frac{-7}{3*6}[/tex]

Multiply 3 and 6 to get 18.

[tex]a > \frac{-7}{18}[/tex]

Fraction    [tex]\frac{-7}{18}[/tex]   can be rewritten as

[tex]-\frac{7}{18}[/tex]

 by extracting the negative sign.

[tex]a > -\frac{7}{18}[/tex]

​

Answer:

y= 48

Step-by-step explanation:

X was doubled so i believe this is correct

Have a great day!!!

Answer:

[tex] \sf \large \: - 31[/tex]

Step-by-step explanation:

3²−5(2³)

=9−5(2³)

=9−(5)(8)

=9−40

=−31

Answer:

x=-3, y = 4/9

Step-by-step explanation:

This is in equation form.

Answer:

no because the absolute value of -7 is 7 which is greater than the absolute value of 6 which is 6.

Answer:

======================

Progress per day and night is:

Number of days to climb the tree less 11 ft:

Julia climbed in 16 days/nights:

One more day is required after this: