smaller balls are there?

Total Smaller balls measuring **5mm diameter **will be **12.**

A **sphere **is a geometrical object that resembles a two-dimensional circle in three dimensions. In three-dimensional space, a **sphere **is a **collection **of points that are all located at the same r-distance from a single point. The radius of the **sphere **is denoted by the letter r, and the specified **point **represents its center.

1 cm = 10mm

6 cm = 60mm

Ball **diameter is 5 mm.**

diameter of the lead **sphere **divided by the **number **of **balls**

= 60mm/ 5mm

**= 12 balls**

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Of the sum of the 3rd and 4th term of an AP is -2 and it's 2nd term is 2. Find the common difference of the AP.

**⇒Logically we know that to find the **[tex]3^{rd}[/tex] term we use [tex]T_{3} =a+2d[/tex]

⇒From

[tex]T_{3} =a+(3-1)d\\T_{3}=a+2d[/tex]

⇒And the [tex]4^{th}[/tex] is equal [tex]T_{4} =a+3d[/tex] from the same method I used above from the general equation of finding the [tex]n^{th}[/tex] term.

⇒It is said the** sum **of [tex]T_{3}[/tex] and [tex]T_{4}[/tex] is -2 meaning

[tex]T_{3} +T_{4} =(a+2d)+(a+3d)\\-2=a+2d+a+3d\\-2=a+a+2d+3d\\-2=2a+5d[/tex]

⇒It is also said that [tex]T_{2}[/tex] is 2 and we know at this point that

[tex]T_{2} =a+d\\2=a+d[/tex]

⇒Then we can use the **simultaneous equations techniqu**e to find the value of d.

I will use the substitution method by deriving the third equation from the second equation **2=a+d**

**a=2-d is the **[tex]3^{rd}[/tex] equation that I will substitute in the equation** **

**In the place of a it means I will plug in 2-d in the place of a.**

[tex]-2=2a+5d\\-2=2(2-d)+5d\\-2=2(2)+2(-d)+5d\\-2=4-2d+5d\\-2-4=3d\\\\3d=-6\\\\[/tex]

[tex]\frac{3d}{3} =\frac{-6}{3} \\d=-2[/tex]

**NOTE if you were also asked to find the value of a you can use the equations above to find the value of a which is the first term. the difference represented by letter d is -2.**

**GOODLUCK!!**

At one store Roberto bought 10 packages of batteries. Each package had 24 batteries. At another store, he bought 10 packages of batteries, but each package only had 15 batteries. How many batteries did Roberto buy in all?

10x24=240

10x15=150

Total:390 batteries

10x15=150

Total:390 batteries

10x15 + 10x24 =390 batteries!

Please give me answer to this question!

(d) W

9+7=16 (p is the 16th letter in the alphabet)

4+1=5 (e is the 5th letter in the alphabet)

15+8=23 (w is the 23rd letter in the alphabet)

9+7=16 (p is the 16th letter in the alphabet)

4+1=5 (e is the 5th letter in the alphabet)

15+8=23 (w is the 23rd letter in the alphabet)

**Answer:**

W

**Step-by-step explanation:**

9 + 7 = 16 and P is the 16th letter of the English Alphabet

4 + 1 = 5 and E is the 5th letter of the English Alphabet

15 + 8 = 23 and W is the 20th letter of the English Alphabet

You decide to go to a basketball game. The tickets cost $37 each and you paid for you and your cousin to get in.

How much did 2 basketball tickets cost?

Answer:

$74.00

Step-by-step explanation:

Two tickets at $37 apiece, we cal calculate a total by adding 37 + 37,

OR by multiplying

2×37

Either way, the total works out to be $74

Amber wants to put carpet on the floor of her bedroom. The floor is a square with an area of 7.29 square feet.

How long should the piece of carpet be on each side?

**Answer:**

2.7 feet

**Step-by-step explanation:**

S = a²

S = 7.29

a = sqrt(7.29) = 2.7

**Answer:**

2.7

**Step-by-step explanation:**

Area is [tex]side^{2}[/tex]

a= [tex]s^{2}[/tex]

[tex]\sqrt{7.29}[/tex] = 2.7

2.7 x 2.7 = 7.29

Please help with grade 8th made assignment:((

Converting each of the question mentioned decimal into **fractions** in their simplest form, we get,

(i) 0.6 with 6 **recurring** = (2/3)

(ii) 3.405 with (405) **recurring** = (378/37)

(iii) 0.75 with (75) **recurring** = (25/33)

(iv) 0.3 with 3 **recurring** = (1/3)

As per the question statement and the attached reference along with the question, we are provided with four **recurring** decimal values.

We are required to convert each of the decimal values into **fractions** in their simplest form.

Starting with (i), 0.6 with 6 **recurring** = 0.66666...

Now, let [x = 0.6666...]

Or, [10x = 6.6666...]

Or, [(10x - x) = (6.6666...) - (0.6666...)]

Or, (9x = 6)

Or, [x = (6/9)]

Or, [x = (2/3)]

Or, [0.6666... = (2/3)]

Similarly for (ii), 3.405 with (405) **recurring** = 3.405405405405...

Now, let [x = 3.405405405...]

Or, [1000x = 3405.405405405...]

Or, [(1000x - x) = (3405.405405405...) - (3.405405405...)]

Or, (999x = 3402)

Or, [x = (3402/999)]

Or, [x = (378/37)]

Or, [3.40540405... = (378/37)]

Coming to (iii), 0.75 with (75) **recurring** = 0.757575...

Now, let [x = 0.757575...]

Or, [100x = 75.757575...]

Or, [(100x - x) = (75.757575...) - (0.757575...)]

Or, (99x = 75)

Or, [x = (75/99)]

Or, [x = (25/33)]

Or, [0.757575... = (25/33)]

Finally coming to (iv), 0.3 with (3) **recurring** = 0.333...

Now, let [x = 0.333...]

Or, [10x = 3.333...]

Or, [(10x - x) = (3.333...) - (0.333...)]

Or, (9x = 3)

Or, [x = (3/9)]

Or, [x = (1/3)]

Or, [0.333... = (1/3)]

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Find the coordinates of the point P along the directed line segment AB so that AP to PB is the given ratio. A(-2, -4), B(6, 1); 3 to 2

In order for the ratio of AP to PB to be 3/2, the **coordinates **of point P along the directed **line** segment AB are (14/5, -1).

The **section** formula returns the coordinates of a point that divides the line **connecting** two points in a ratio, either internally or externally.

Section formula is given as follows:

[tex](\frac{mx_{2 }+nx_{1} }{m+n} , \frac{my_{2} +ny_{1} }{m+n})[/tex]

In math, how do you find coordinates?Start at the point andIt is given that the coordinates of the points A and B are A(-2, -4), B(6, 1) and AP/PB = 3/2

Let the coordinates of the point P be (a, b).

By using section formula,

(a, b) = [tex](\frac{mx_{2 }+nx_{1} }{m+n} , \frac{my_{2} +ny_{1} }{m+n})[/tex]

(a, b) = [tex](\frac{3(6)+2(-2)}{3+2} , \frac{3(1) +2(-4)}{3+2} )[/tex]

(a, b) = [tex](\frac{18 - 4}{5} , \frac{3-8}{5})[/tex]

(a, b) = [tex](14/5, -5/5)[/tex]

(a, b) = [tex](14/5, -1)[/tex]

Therefore, the **coordinates** of the point P along the directed line **segment** AB so that the ratio of AP to PB is 3/2 are (14/5, -1).

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What is 5xy-x squared t + 2xy + 3x squared t

The **expression **5xy - x²t + 2xy + 3x²t has a value of 7xy + 2x²t

From the question, the **expression **is given as

5xy - x squared t + 2xy + 3x squared t

**Rewrite **the above expression properly

This is represented as

5xy - x²t + 2xy + 3x²t

Next, we collect the **like terms **in the above expression

So, we have the following equation

5xy - x²t + 2xy + 3x²t = 5xy + 2xy - x²t + 3x²t

Evaluate the like terms in the above expression

So, we have the following equation

5xy - x²t + 2xy + 3x²t = 7xy + 2x²t

The equation cannot be further **simplified**

Hence, the **value **of 5xy - x²t + 2xy + 3x²t is 7xy + 2x²t

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Mamadou and Brianna work at a dry cleaners ironing shirts. Mamadou can iron 15 shirts per hour, and Brianna can iron 25 shirts per hour. Mamadou worked 2 more hours than Brianna and they ironed 230 shirts between them. Write a system of equations that could be used to determine the number of hours Mamadou worked and the number of hours Brianna worked. Define the variables that you use to write the system.

15x + 25 y = 230 and x - y = 2 is a system of **equations** that could be used to calculate the number of **hours **Mamadou worked and Brianna worked.

Given:

Mamadou can iron 15 shirts in one hour, whereas Brianna can do 25. Mamadou put in two more hours of work than Brianna, and the two of them combined to iron 230 shirts.

Let y be the number of hours Brianna, works, and x be the number of hours Mamadou works.

In y hours, Brianna would iron 25y shirts.

In x hours, Mamadou would iron 15x shirts.

Combining total number of shirts,

15x + 25 y = 230

Since, Mamadou put in two more hours of work than Brianna.

x = y +2

x - y = 2

Therefore, for the number of **hours** Mamadou and Brianna worked, a system of **equations** 15x + 25 y = 230 and x - y = 2 could be utilised.

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Answer:

15x + 25 y = 230 and x - y = 2

Step-by-step explanation:

Find the value of x.

**Answer:**

x=110

**Step-by-step explanation:**

You can set the equation up like this:

100=x-10

Make x by itself

x=110

The number of people who like a particular video online triples every day after the day the video is posted. If 15 people like the video on the day it is posted, which inequality can be used to find the number of days, t, it takes for the number of people who have liked the video to reach more than 3,000?

The **inequality** for the **expression** will be represented by n > 5.

The **parameters **present shows a geometric sequence. A **Geometric sequence** is the one in which the ratio between the consecutive terms remains constant. The constant ratio is called **common ratio**. The nth term of geometric sequence is represented by **Tₙ = arⁿ⁻¹ **where n is the **number of terms**, r is common ratio and a is the first term. Here, a = 15 and r = 3. Now, for the people to be more than 3000 the **inequality** can be written as

arⁿ⁻¹ > 3000

15 (3)ⁿ⁻¹ > 3000

3ⁿ⁻¹ > 200

Taking **log** on both sides

log 3ⁿ⁻¹ > log 200

(n - 1) > log 200/log 3

n - 1 > 4.82

n > 5.82

Rounding off we get

n > 5 which is required **inequality**.

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PLEASE help ( What's the slope of a line that passes through points C (1,3) and B (4,7)

**Answer:**

slope = [tex]\frac{4}{3}[/tex]

**Step-by-step explanation:**

calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = C (1, 3 ) and (x₂, y₂ ) = B (4, 7 )

m = [tex]\frac{7-3}{4-1}[/tex] = [tex]\frac{4}{3}[/tex]

Now, let’s say the children sold 50 cups of lemonade on the first day and 90 cups on the second day. Which proportion can be used to calculate the percent increase in the number of lemonade cups sold?

If the children sold 50 cups of lemonade one the first day and 90 cups on the second day. then the **percentage increase** in the number of lemonade cups sold 80%

**The number of cups** of lemonade sold on first day = 50 cups

The number of cups of lemonade sold on second day = 90 cups

The percentage increase = (New value - Old value)/Old value × 100

Substitute the values in the** equation**

The percentage increase in the number of lemonade cups sold

= [tex]\frac{90-50}{50}[/tex]×100

= 0.8×100

= 80%

Hence, if the children sold 50 cups of lemonade one the first day and 90 cups on the second day. then the percentage increase in the number of lemonade cups sold 80%

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**Answer:**

**90-50/50 = P/100**

**Step-by-step explanation:**

This is the correct answer on T4L!

Struggling with this… please help

**B = 47°**

**a = 10.9**

**b = 11.7**

**How are the angles and sides of the right triangle calculated?**

**a) Finding B**

We know that ,**the sum of every angles of a triangle = 180°**

So, B + 90° +43° = 180°

B+ 133° = 180°

B = 180° - 133°

=**47°**

**b) Finding a**

We know,

[tex]sin\theta =\frac{opposite}{hypotenuse} \\\\sin 43^{\circ} =\frac{a}{16} \\\\a= 16(sin 43^{\circ})\\\\a = 16 (0.681)\\\\a=10.9[/tex]

**c) Finding b**

We know,

[tex]cos\theta = \frac{adjacent}{hypotenuse} \\\\cos 43^{\circ} =\frac{b}{16} \\\\b = (cos 43^{\circ})16\\\\b= (0.731) 16\\\\b= 11.7[/tex]

**What is a right triangle?**

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. A bag of potato chips weighs 154 grams. How much does this bag weigh in ounces? 1oz = 28g

Answer:

5.5 oz

Step-by-step explanation:

154÷28

If sinØ=4/5 in quadrant ll, what is cosØ?

**Answer: cosφ=-3/5**

**Step-by-step explanation:**

[tex]\displaystyle\\sin\phi=\frac{4}{5} \ \ \ \ \ 90^0 < \phi < 180^0\\\\sin^2\phi+cos^2\phi=1\\\\\cos^2\phi=1-sin^2\phi\\\\cos^2\phi=1-(\frac{4}{5})^2\\\\ cos^2\phi=1-\frac{16}{25} \\\\cos^2\phi=\frac{1(25)-16}{25}\\\\ cos^2\phi=\frac{25-16}{25} \\\\cos^2\phi=\frac{9}{25} \\\\cos\phi=б\sqrt{\frac{9}{25} } \\\\cos\phi=б\sqrt{\frac{3^2}{5^2} }\\\\cos\phi=б\sqrt{(\frac{3}{5})^2} \\\\cos\phi=б\frac{3}{5} \\\\90^0 < \phi < 180^0\\\\Hence,\ \\\\cos\phi=-\frac{3}{5}[/tex]

How much do you owe at the end of four weeks

**Given:**

If you borrow $100, you will have an interest of $10.

**Asked: **How much do you owe at the end of four weeks?

**Solution:**

*To solve this problem, we need to find the rate, r.*

*According to the given, we can get the rate by:*

*$100 x rate = $10*

*rate = $10/$100*

**rate = 0.10**

*Now, if you borrow $1100, you will pay at the end of four weeks the amount of:*

*$1100 x 0.10 = $110*

*Total amount = $1100 + $110 = $1210*

**ANSWER: **You will owe **$1210** at the end of four weeks.

**Answer:**

**You will owe $1210 at the end of four weeks.**

|-7| and |7|

what does the | mean?

Absolute value.

Basically, you neglect the sign on the number and only consider the magnitude.

Consider the following examples:

|-7| = 7

|7| = 7

|2-3| = |-1| = 1

|3-2| = |1| = 1

Basically, you neglect the sign on the number and only consider the magnitude.

Consider the following examples:

|-7| = 7

|7| = 7

|2-3| = |-1| = 1

|3-2| = |1| = 1

The | means how far the number is away from zero. For example, |-2| is 2 numbers away from zero, so it’s two

Hope you understand :) This is called “absolute value”

Hope you understand :) This is called “absolute value”

Use the point-slope form of a linear equation to write the

equation of the line.

Slope = 3 through (-4,-7)

**Answer:**

y +7 = 3(x +4)

**Step-by-step explanation:**

You want the **point-slope equation** of the line with **slope 3** through **point (-4, -7)**.

The point-slope equation of a line with slope m through point (h, k) is ...

y -k = m(x -h)

ApplicationFor m=3 and (h, k) = (-4, -7), this is ...

y -(-7) = 3(x -(-4)) . . . . . substitute for m, h, k

** y +7 = 3(x +4)**

Question 7 Mai and Tyler are selling items to earn money for their elementary school. The school earns w dollars for every wreath sold and p dollars for every potted plant sold. Mai sells 14 wreaths and 3 potted plants and the school earns $70.50. Tyler sells 10 wreaths and 7 potted plants and the school earns $62.50. This situation is represented by this system of equations: { 14 w + 3 p = 70 . 50 10 w + 7 p = 62 . 50 Which statements are true in explaining why it makes sense that the solution of this system is also a solution to 4 w + ( − 4 p ) = 8 . 00 ? Select all that apply. (Lesson 2-15) Multiple select question. A) Because 10 w + 7 p is equal to 62.50, subtracting 10 w + 7 p from the left side of 14 w + 3 p = 70 . 50 and subtracting 62.50 from its right side keep the two sides equal. B) The equation 4 w + ( − 4 p ) = 8 . 00 is the result of adding the two equations in the system and then dividing the result by 6. C) The equation 4 w + ( − 4 p ) = 8 . 00 is the result of subtracting the second equation in the system from the first equation. D) The equation 4 w + ( − 4 p ) = 8 . 00 represents the difference between Mai's sales and Tyler's sales, or the result of subtracting Tyler's sales from Mai's. E) The left side of the equation 4 w + ( − 4 p ) = 8 . 00 shows the difference in terms of the items sold. The right side shows the difference in dollars. The cost per wreath, w, and the cost per potted plant, p, haven't changed.

**Option **(C) is** correct** which is the equation 4 w + ( − 4 p ) = 8 . 00 is the result of subtracting the second equation in the system from the first equation.

Mai and Tyler are selling items to earn **money** for their elementary school.

Mai sells 14 **wreaths** and 3 potted plants and the school earns $70.50. Mathematically we can write,

14 w + 3 p = 70.50 equation 1

Tyler sells 10 wreaths and 7 potted plants and the school **earns** $62.50. Mathematically we can write,

10 w + 7 p = 62.50 equation2

equation 1 - equation 2 , we get

4 w + ( - 4 p ) = 8.00

which is the required equation.

We can conclude that the equation 4 w + ( − 4 p ) = 8 . 00 is the result of subtracting the second equation in the system from the first equation

So, **option** (C) is correct.

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The graph of the quadratic function y=x^2-2x+3 is shown below

The **graph **of the **quadratic function** y = x² - 2x + 3 is shown in attached figure.

**What is Quadratic equation?**

An **equation **is called a **quadratic equation** if the highest power of variable of the equation is 2.

Given that;

The** quadratic equation** is,

y = x² - 2x + 3

Now,

The graph of the **quadratic function **y = x² - 2x + 3 has **vertex **(1, 2).

Thus,

The **graph **of the **quadratic function** y = x² - 2x + 3 is shown in attached figure with **vertex **(1, 2).

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A store owner mixes 2 Ib of candy that costs x dollars per pound with 3 Ib of candy that costs $1.50 per pound. She sells the mix for $2.50 per pound.

By solving a** linear equation **we will see that the **value** of x is x = $4.00

We know that a store owner mixes 2 Ib of candy that **costs **x dollars per pound with 3 Ib of candy that costs $1.50 per pound. She sells the mix for $2.50

The total amount of the mix is:

2lb + 3lb = 5lb, now, the **total cost **at the beginning must be the same as the **final cost**, so we can write the equation:

2*x + 3*$1.50 = 5*$2.50

Now we can solve this** linear equation** for x:

2*x = 5*$2.50 - 3*$1.50 = $8.00

x = $8.00/2 = $4.00

The cost of the candy is 4 dollars.

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equivalent ratios - 2:6

The **equivalent ratios** of 2:6 can be 4:12, 6:18, 8:24, etc.

According to the question,

We have the following ratio:

2:6

Now, we have to find its equivalent ratios.

We know that equivalent ratios mean that when we compare any obtained ratio with the given ratio it should be same. So, to find equivalent ratios, we need to multiply both the numbers in the ratio by the same** number**.

In this case, we will find the three equivalent ratios. We will **multiply** both the numbers by 2, 3 and 4.

The given ratio = 2:6

Multiplying by 2:

4:12

Multiplying by 3:

6:18

Multiplying by 4:

8:24

Hence, the equivalent ratios of 2:6 are 4:12, 6:18 and 8:24.

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8(q-2) = 44+5(2q-12)

The **value of q **in the given equation is **0.**

This is a problem from an **algebraic equation,** we can solve this problem by following a few steps.

The given equation is,

8(q-2) = 44+5(2q-12)

Let's simplify the equation.

8(q-2) = 44+5(2q-12)

Or, 8q- 16= 44+ 10q- 60

Now, we have to organize the equation.

8q- 10q= 44- 60+ 16

Or, -2q = 0

Or, q = 0/2 ( dividing both side by 2 )

Or, q = 0

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The **complete question** is:

Find the value in the given equation,

8(q-2) = 44+5(2q-12)

a drawer contains a mixture of red socks and blue socks, at most 1991 1991 in all. it so happens that, when two socks are selected randomly without replacement, there is a probability of exactly 1 2 12 that both are red or both are blue. what is the largest possible number of red socks in the drawer that is consistent with this data? (1991,

The **largest** possible number of red socks in the drawer that is consistent with this data is 990.

To solve the given question, we will form **equations** according to the given data including a known and an unknown variable.

Let r be the number of socks that are red, and t be the total number of socks.

We get,

2(r(r-1)+(t-r)(t-r-1))=t(t-1)

Expanding the left hand side and the right hand side

we get,

4r^2-4rt+2t^2-2t = t^2-t

moving the terms, we will get that

4r^2-4rt+t^2 = t

We notice that the left side is a perfect square.

(2r-t)^2 = t

Thus t is a perfect square.

And, the higher t is, the higher r will be. So, we should set

t = 44^2

= 1936

we see, 2r-1936 = 44

We will use the positive root, to get that

2r-1936 = 44,

2r = 1980

r = 990

Therefore, we can conclude that the largest possible number of red socks in the drawer that is consistent with this data is 990.

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Write an equation in slope- intercept form for the line that passes through (-8,-7) and is perpendicular to the graph y= -x-8

**Answer: y=-1/8x**

**Step-by-step explanation:**

**Choose a point that the perpendicular line will pass through.**

**(0,0)**

**Use the slope-intercept form to find the slope.**

**m=8**

**The equation of a perpendicular line must have a slope that is the negative reciprocal of the original slope.**

**perpendicular**

**m= −1/8**

**Find the equation of the perpendicular line using the point-slope formula.**

**y+0=−1/8⋅(x+0)**

**Write in **

**y=mx+b**

** form.**

**y=−1/8x**

**Hope this helps**

An engineer created a scale drawing of a building using a scale in which 0.25 inch represents 2 feet. The length of the actual building is 250 feet.

What is the length in inches of the building in the scale drawing?

help please

The **length **of the building in the **scale **drawing is; 31. 25 Inches

From the given, we have that **Scale **drawing was used 0. 25 inches represents 2 feet

The **length **of the building = 250 feet

Then, 0. 25 inches = 2 feet

Then, x inches = 250 feet

Now cross multiply

x × 2 = 0. 25 × 2500

Multiply through, we have;

2x = 62. 5

Make 'x' the subject by dividing both sides by 2

2x/2 = 62. 5/ 2

x = 31. 25 Inches

Thus, the **length **of the building in the **scale **drawing will be; 31. 25 Inches.

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example: suppose that the probability that an item produced by a certain machine will be defective with probability 0.1. find the probability that a sample of 10 items will contain at most 1 defective item.

The **probability** that a sample of 10 items will contain at most **1 defective** item is 0.7361

Consider X to **denote** the number of defective items which follows binomial distribution with sample size, n equals to 10.

The probability p of an item produced by a certain machine will be defective is 0.1.

Therefore, the probability q of an item produced by a certain machine will not be defective is:

(1−0.1)

=0.9

The probability of at most one defective item can be calculated as follows:

[tex]P(X\leq 1)=P(X=0)+P(X=1)\\[/tex]

[tex]=^{10} C_{0} p^{0} (1-p)^{10} +^{10} C_{1} p^{1}(1-p)^{9}[/tex]

[tex]=(0.9)^{10} +10(0.1)(0.9)^{9}[/tex]

[tex]=0.7361[/tex]

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Decide whether each table could represent a proportional relationship what dose k =

Table **A** doesn't represent the **constant** of proportionality.

Table B doesn't represent the **proportional** relationship.

Treat the values in table as (x,y) values. The result is a linear **function**

For A, 85/5 = 17 while 79 / 10 = 7.9. This doesn't illustrate a constant.

For B, 1.49/16 and 1.59/20 have different values. In this case, 1.49/16 = 0.093 and 1.59/20 = 0.0795.

Therefore. they don't have a **constant** of **proportionality**. This was because the values that were gotten for both A and B aren't equal.

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Decide whether each table could represent a proportional relationship. If the relationship could be proportional, what would the constant of proportionality be?

1. How loud a sound is depending on how far away you are

5 85

10 79

20 73

40 67

b. The fountain drinks at hot dog hut.

16 1.49$

20 1.59$

30 1.89$

Graph the linear equation 65 points

**You can see the three points where the result is equal to an integer in the photo below. Good luck!**

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