Last Wednesday, students could choose ham or turkey sandwiches for lunch. The cafeteria made 80 sandwiches in all, 8 of which were turkey. What percentage of the sandwiches were turkey sandwiches?

Answer: 7.64

Step-by-step explanation:

It's rounded off.

When rounding significant figures the standard rules of rounding numbers apply, except that non-significant digits to the left of the decimal are replaced with zeros.

This question is incomplete, the complete question is;

Surgical complications: A medical researcher wants to construct a

99.5% confidence interval for the proportion of knee replacement surgeries that result in complications.

- 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 sample of operations needed is 149

Step-by-step explanation:

Given that;

confidence interval = 99.5% = 0.995 so

margin of error E = 0.08

p = 14% = 0.14

now we obtain the critical value of z t the 99.5 confidence interval

∝ = 1 - confidence interval

∝ = 1 - 0.995

∝ = 0.005

∝/2 = 0.0025

obtaining the area of probability in the right tail

Area of probability to the right is = 1 - 0.0025 = 0.9975

from probability table; critical value of t =2.81

using the formula

n = p( 1 - p ) [ (z_∝/2)/E)² ]

so we substitute  

n = 0.14 ( 1 - 0.14 ) [ 2.81 / 0.08 )²  

n = (0.14 × 0.86 ) × 1233.7656

n = 148.5453 ≈ 149

Therefore , a sample of operations needed is 149

Answer:

f Yin contributes 3%, her company will contribute  3%

If Yin contributes 6%, her company will contribute  6%

If Yin contributes 8%, her company will contribute

6%

Step-by-step explanation:

If Yin contributes 3%, her company will match that rate and contribute 3%.

If Yin contributes 6%, her company will match that rate and contribute 6%.

If Yin contributes 8%, her company will contribute 6%, because the maximum amount it will match is 6%

Answer:

Step-by-step explanation:

Just got it right on Plato/Edmentum

Answer:

Your answer is 89760!!!

hope this helps!!!

Answer:

89760

Step-by-step explanation:

17*5280=89760

Answer:

2/3 times 3/2 equals 1.

Step-by-step explanation:

I've done it

Answer:

umm

Step-by-step explanation:

if your saying the opposite of 4 is -4 and 3+4 is now 4+3 so -4+4+3=7

Answer:

x+2

Step-by-step explanation:

the answer is actually x+2  

Answer:

m=4

Step-by-step explanation:

[tex]\frac{10-6}{1-0} =\frac{4}{1} =4[/tex]

Answer:

X =7

Step-by-step explanation:

find x;

45 IS base,

so 45 power X = 45^7

45^x = 45^7

45 will cancel out remaining x=7

therefore x= 7

Answer: 4x + 6y >/ 50

Step-by-step explanation:

The answer is A. 4x + 6y is greater than or equal to 50

Answer:

25x = - 1820

x = -72.8

The truck drove 72.8 miles at 45mph and 100-72.8 = 27.2 miles at 20mph

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

He weighs 240 pounds

Step-by-step explanation:

Answer:

180

Step-by-step explanation:

280 divided by 2 is 140

140-40=100

140+40=180

Answer:

A

Step-by-step explanation:

Hope this helps man i have the same answer rn and im in middle school

Step-by-step explanation:

175÷50=3.5

3.5×1/4=0.875

Answer:

C)

Step-by-step explanation:

The number of playes can only be 8, 9, 10 ,11 , 12

Answer:

For question 6 :

> Vertical stretch by 4 ( Multiply y co-ordinates by a)

> Horizontal compress by 2 ( Multiply x co-ordinates by 1/a)

For question 7 :

> Horizontal compress by 3 (Multiply x co-ordinates by 1/a)

> Graph moved down 4.

I hope this is what you looking for.

Answer:

6.  Stretched horizontally by a factor of 1/2 and stretched vertically by a factor of 4.

7.  Stretched horizontally by a factor of 1/3 and translated 4 units down.

Step-by-step explanation:

Transformations

[tex]\textsf{For $a > 0$}[/tex]

[tex]f(x+a) \implies f(x) \: \textsf{translated $a$ units left}[/tex]

[tex]f(x-a) \implies f(x) \: \textsf{translated $a$ units right}[/tex]

[tex]f(x)+a \implies f(x) \: \textsf{translated $a$ units up}[/tex]

[tex]f(x)-a \implies f(x) \: \textsf{translated $a$ units down}[/tex]

[tex]a\:f(x) \implies f(x) \: \textsf{stretched parallel to the $y$-axis (vertically) by a factor of $a$}[/tex]

[tex]f(ax) \implies f(x) \: \textsf{stretched parallel to the $x$-axis (horizontally) by a factor of $\dfrac{1}{a}$}[/tex]

[tex]-f(x) \implies f(x) \: \textsf{reflected in the $x$-axis}[/tex]

[tex]f(-x) \implies f(x) \: \textsf{reflected in the $y$-axis}[/tex]

Parent function:

[tex]f(x)=\sqrt{x}[/tex]

Stretched horizontally by a factor of 1/2:

Multiply the x-variable by 2:

[tex]\implies f(2x)=\sqrt{2x}[/tex]

Stretched vertically by a factor of 4:

Multiply the function by 4:

[tex]\implies4f(2x)=4\sqrt{2x}[/tex]

Parent function:

[tex]f(x)=\lfloor x \rfloor[/tex]

Stretched horizontally by a factor of 1/3:

Multiply the x-variable by 3:

[tex]\implies f(3x)=\lfloor 3x \rfloor[/tex]

Translated 4 units down:

Subtract 4 from the function:

[tex]\implies f(3x)-4=\lfloor 3x \rfloor-4[/tex]

Answer:

x = 104°

Step-by-step explanation:

Hello!

104° and x° are called alternate interior angles because they are in between the two parallel lines, and on the opposite sides of the transversal line.

Since they are alternate interior angles, they are congruent in measure.

Therefore: x = 104°

With alternate angles concept, the value of x from the given parallel lines is 104°.

Given that, straight line m parallel to straight line n and t is the transversal.

When a transversal connects two coplanar lines, alternate interior angles are created. They are located on the transverse sides of the parallel lines, but on the inner side of the parallel lines. At two different locations, the transversal passes through the two lines that are coplanar.

Here, x°=104° (Interior alternate angles are equal)

Therefore, the value of x from the given parallel lines is 104°.

To learn more about the alternate interior angles visit:

brainly.com/question/28380652.

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Answer:

C. -4 = 16x

Step-by-step explanation:

That is the graph i got when I typed -4 = 16x.

Brainliest Please!!!

- Hermionia

they are corresponding angles

Answer:

the answers are

Step-by-step explanation:

for the +5

slope -2

y intercept (0,5)

for the +6

slope is -2

y-intercept (0,6)

if this helped give brainlyest

Answer:

30

Step-by-step explanation:

25£ : 650 rubles

x£ : 780 rubles

25/x = 650/780

(cross multiply)

650x = 25×750

650x = 18 750

divide 18 750 by 650

which is = 30

thus x = 30

780 rubles id equals to £29.64.

The unitary method is a technique for solving a problem by first finding the values of a single unit, and then finding the necessary value by multiplying the single unit value.

According to the given question

We have

£25 = 650rubles

⇒ 1 rubles = [tex]\frac{25}{650}[/tex] = £0.038

Therefore,

780 rubles = £0.038 × 780 = £29.64

Hence, 780rubles id equals to £29.64.

Learn more about unitary method here:

https://brainly.com/question/22056199

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The dimensions of the scale copy of the rectangle are given by 8 inches and 16/3 inches respectively.

What is a rectangle?

A rectangle is a closed geometric figure with opposite sides parallel and equal to each other. In a rectangle, all the angles are equal and right to each other. The diagonals of a rectangle bisect each other.

Calculating the dimensions of the scale copy

Given length and width of a rectangle are 12 inches and 8 inches respectively

Lexi draws a scale copy of this rectangle using scale factor ⅔.

The new dimensions of the scale copy of the rectangle are given below:

Length Of the scale copy of rectangle = 12 × (⅔) = 8 inches

Width Of the scale copy of rectangle = 8 × (⅔) = 16/3 inches

Hence, the dimensions of the scale copy of the rectangle are 8 inches and 16/2 inches respectively.

To learn more about the rectangle, visit the link given below:

https://brainly.com/question/28337358

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Answer:

2000

Step-by-step explanation:

Given the equation :

S=2000n+55000

Comparing the equation given to the standard linear equation formula :

y = mx + c

Where ; c = intercept ; m = slope ; y = dependent variable and x = independent variable

From The comparison, the slope of the equation given = 2000.

According to the context, the slope means that Camden salary will increase by 2000 each year.

Answer:

28 eggs

Step-by-step explanation:

It takes a hen and a half to lay an egg and a half in a day and a half - this means it takes 1 hen to lay 1 egg in a day and a half. Therefore, 1 hen will lay 4 eggs in 6 days, and 7 hens will lay 28 eggs in 6 days.

Answer:

18

Step-by-step explanation:

in 6 days there is 144 hours divide that by 36 (a day and a half) would be 4 so 4 days of the 6 the hens would lay an egg and a half. there is 6 hens divide that by 1.5 would be 4 times that together would be 16 but they laid an egg and a half so add .5x4 so add 2 to the 16 which gives 18

Answer:

Sqrt32 = 4[tex]\sqrt{2}[/tex], Sqrt28 = 2[tex]\sqrt{7}[/tex], Sqrt12 = 2[tex]\sqrt{3}[/tex]

Step-by-step explanation:

Square root of 32:

First we find the prime factors of the number by making a factor tree.

32 splits into 8 and 4.

8 splits into 4 and 2

4 splits into 2 and 2

4 splits into 2 and 2

This becomes the square root of [tex]2^{2}[/tex] x [tex]2^{2}[/tex] x 2. It will simplify to:

4[tex]\sqrt{2}[/tex]

Square root of 28:

The prime factors of this number are:

2, and 2

This simplifies to 2[tex]\sqrt{7}[/tex]

Square root of 12:

The prime factors of this are:

3, 2, 2

This simplifies to:

2[tex]\sqrt{3}[/tex]

Answer:

They can not be simplified because they are not perfect squares.

Complete question :

Of 50 employees of a store located in downtown Boston, 18 people take the subway to work, 12 take the bus, and 7 people take both the subway and the bus. How many employees (a) Take the subway or the bus to work? employees (b) Take only the bus to work? employees (c) Take either the bus or the subway to work (but not both)? employees (d) Get to work by some other means? employees

Answer:

23 ; 5 ; 16 ; 13

Step-by-step explanation:

Given that:

Subway (s) = 18

Bus (b) = 12

Subway and bus = 7

a) Take the subway or the bus to work?

Number of subway + number of bus - (subway and bus)

18 + 12 - 7 = 23

(b) Take only the bus to work?

Number of bus - (subway and bus)

12 - 7 = 5 employees

(c) Take either the bus or the subway to work (but not both)?

Number of bus - (subway and bus) + Number of bus - (subway and bus)

(12 - 7) + (18 - 7) = 5 + 11 = 16 employees

(d) Get to work by some other means?

Total employees - (subway + bus + subway and bus)

50 - (18 + 12 + 7)

50 - 37

= 13 employees

Answer:

16

Step-by-step explanation:

[tex]50 - 34 = 16[/tex]

Answer:

16

Step-by-step explanation: