Ken has 8 pennies. ron has 3 pennies. howmany fewer pennies does ron have than ken?

Answers

Answer 1

1. You have that Ken has 8 pennies and Ron has 3 pennies. Therefore, to calculate that ron has, you only has to substract the pennies of Ken and the pennies of Ron, as below:

= 8 pennies-3 pennies

2. Then, the result is:

=5 pennies

How many fewer pennies does ron have than ken?

The answer is the following: Ron has 5 pennies fewer than Ken.

Related Questions

Which of the following is equal to (2x/3 - 7) + 7

A. (2x - 7) + 21

B. 2x - 21/3

C. 3x/2

D. 2x/3

@texaschic101

Answers

Which of the following is equal to: (2x/3 - 7) + 7
The order of the mathematical operations is PEMDAS.
Therefor the first step you will take is to solve the operation inside the parenthesis.
(2x/3 - 7) =(2x/3 - 7)* 3/3 = 2x/3 - 21/3 = (2x - 21)/3
While adding or subtracting fractions, dont forget to check that each term have the same denominator.

Then the operation outside the parenthesis,

(2x - 21)/3 + 7 = (2x-21)/3 + 7 * 3/3 = (2x - 21)/3 + 21/3 =

(2x - 21 + 21) / 3 = 2x/3

The final answer is D. 2x/3

The correct answer is D. The number 7 is subtracted from the first term, 2x/3, but then an equal sum is added, and the two effectively cancel each other out. This means that the value of the first expression is essentially 2x/3, which is option D.

A circular pool is surrounded by a circular walkway. The radius of the pool is y − 4 and the radius of the full circle formed by the walkway is y + 4. Write a polynomial that represents the area of just the walkway itself, not including the space covered by the pool. (The area of a circle is given by A = πr ^2, where r represents the radius of the circle.)

Answers

Final answer:

The polynomial representing the area of the walkway is the difference between the area of the large circle (π(y + 4)²) and the small circle (π(y − 4)²).

Explanation:

To find the polynomial that represents the area of the walkway surrounding a circular pool, we need to calculate the difference between the area of the larger circle (walkway plus pool) and the area of the smaller circle (just the pool).

The radius of the pool is y − 4, and the radius of the walkway plus the pool is y + 4. The area of a circle is given by A = πr².

First, calculate the area of the large circle:

Area of the large circle = π(y + 4)²

Then, calculate the area of the small circle:

Area of the small circle = π(y − 4)²

Finally, the polynomial for the area of the walkway is found by subtracting the area of the small circle from the area of the large circle:

Area of the walkway = π(y + 4)² − π(y − 4)²

Final answer:

The polynomial that represents the area of just the walkway (not including the pool) is π(8y + 32).

Explanation:

To find the area of just the walkway, we need to subtract the area of the pool from the area of the full circle formed by the walkway. The area of the pool is given by A = πr ^2, where r is the radius of the pool (y - 4). The area of the full circle is given by A = πr ^2, where r is the radius of the walkway (y + 4). Therefore, the area of the walkway is (π(y + 4) ^2) - (π(y - 4) ^2). Simplifying this expression, we get the polynomial: π(8y + 32).

Find the measure of “rst”

Answers

its over 90 degrees but i cannot tell you the exact measurement

Answer: it is 110 bcs each section in 10° and there are 11 sections

You are standing 40 feet away from a building that is 115 feet tall. What is the angle from the ground to the top of the building to the nearest degree?

Answers

whats the answer? i got 0.348??

A prism with a volume of 3125 ft³ is scaled down to a volume of 200 ft³.

What is the scale factor?
Enter your answer, as a decimal or a fraction in simplest form, in the box.

I think it's 2/5 or 0.4

Answers

the right answer is 2/5

Answer:

The scale factor is equal to [tex]0.4[/tex] or [tex]\frac{2}{5}[/tex]

Step-by-step explanation:

we know that

If two figures are similar. then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z------> the scale factor

x------> the volume of the dilated prism

y------> the volume of the original prism

[tex]z^{3}=\frac{x}{y}[/tex]

we have

[tex]x=200\ ft^{3}[/tex]

[tex]y=3,125\ ft^{3}[/tex]

substitute

[tex]z^{3}=\frac{200}{3,125}[/tex]

[tex]z=\sqrt[3]{\frac{200}{3,125}}[/tex]

[tex]z=0.4[/tex] or [tex]z=\frac{2}{5}[/tex]

How to solve
187=1/2*17(6+X)

Answers

The answer to 187=1/2*17(6+X) is X=16

If the public debt of the United States in 2002 was $6,228,235,965,597.16 and the budget deficit in 2003 was $554,995,097,146.46, what was the public debt in 2003?

A. $11,778,186,937,061.76
B. $5,673,240,868,450.70
C. $5,549,950,971,464.60
D. $6,783,231,062,743.62

Answers

the answer is D
i am taking the test as well

Based on the public debt in 2002 and the budget deficit incurred in 2003, the public debt in 2003 was D. $6,783,231,062,743.62.

The budget deficit refers to the amount that the government had to borrow in order to fund the budget of the country.

To find the public debt in 2003 therefore, you need to add the debt of the previous year to the deficit of the current year.

= 2002 Public debt + Budget deficit

= 6,228,235,965,597.16 + 554,995,097,146.46

= $6,783,231,062,743.62

In conclusion, the public debt in 2003 was $6,783,231,062,743.62.

Find out more at https://brainly.com/question/3638352.

Jamie has 4 apples and 6 bananas. Each apple cost 0.75 and each banana cost 0.6” write an expression representing the total cost

Answers

(0.75*4) + (0.6*6) = 6.6

answer: 6.6

Hello!

4 x 0.75 + 6 x 0.6 = 6.6

Enjoy.
~Isabella

o valor da expressão a=1,67 . 10 + 3,95 . 10

Answers

a = 1.67. 10 + 3.95. 10
First we rewrite the expression:
a = (1.67 * 10) + (3.95 * 10)
We multiply each member of the parenthesis by 10:
a = 16.7 + 39.5
We add both values:
a = 56.2
Answer:
We note that the value of the expression for a is:
a = 56.2

A. 11 cm^3
B. 14 cm^3
C. 15 cm^3
D. 25 cm^3

Answers

Lets get started :)

We need to find the radius of the larger cylinder

V = [tex] \pi [/tex]r²h
960 = [tex] \pi [/tex]r²(16)
[tex] \frac{960}{16} = \pi r^2[/tex]
60 = [tex] \pi r^2[/tex]
[tex] \frac{60}{ \pi } = r^2 [/tex]
r = [tex] \sqrt{ \frac{60}{ \pi } } [/tex]
r ≈ 4.27 cm

The ratio of the bigger cylinder to smaller is:
16 : 4

Therefore, the big cylinder is 4 times bigger than the small cylinder

[tex] \frac{4.37}{4} [/tex] = r
r = 1.09 cm (radius of small cyclinder)

V (small cylinder) = [tex] \pi [/tex](1.09)²(4)
= 15 cm³

Your answer will be C. 15 cm³

the volume of a cylinder= height * base area
while the base area = [tex] \pi r^{2}[/tex]
since the two cylinders are similar then the ratio between the two radii= the ratio between the two heights =16/4 =4
then the volume of the large cylinder with respect to the smaller dimensions= [tex] \pi * (4r)^{2} *(4*4)=(\pi r^{2} *4)*4*16[/tex]
but [tex] the volume of the smaller one = \pi r^{2} *4[/tex]
then the volume of the large cylinder = the volume of the smaller cylinder*4*16=960
then the smaller's volume= [tex] \frac{960}{4*16}=15[/tex]

Find the derivative of f(x) = |x2 – 1| at the point (1, 0).

Answers

[tex]\bf \stackrel{f(x)}{y}=|x^2-1|\implies y=\sqrt{(x^2-1)^2}\implies y=[(x^2-1)^2]^{\frac{1}{2}} \\\\\\ \cfrac{dy}{dx}=\stackrel{chain~rule}{\cfrac{1}{2}[(x^2-1)^2]^{-\frac{1}{2}}\cdot 2x}\implies \cfrac{dy}{dx}=x[(x^2-1)^2]^{-\frac{1}{2}} \\\\\\ \cfrac{dy}{dx}=\cfrac{x}{[(x^2-1)^2]^{\frac{1}{2}}}\implies \cfrac{dy}{dx}=\cfrac{x}{\sqrt{(x^2-1)^2}} \\\\\\ \left. \cfrac{dy}{dx}=\cfrac{x}{|x^2-1|} \right|_{x=1}\implies \cfrac{1}{|1-1|}\implies \cfrac{1}{0}\implies und efined[/tex]

meaning, the function is not differentiable at x = 1, graph wise, it simply means is not a "smooth curve", instead is an abrupt edge, or a "cusp" or a "spike", so the graph may be continuous at x = 1, however, is the extremum is not a smooth curve, notice the picture below.

1. A sine function has the following key features:
Frequency = 16π
Amplitude = 2
Midline: y = 3
y-intercept: (0, 3)
The function is not a reflection of its parent function over the x-axis.
Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.

2. A sine function has the following key features:
Period = 12
Amplitude = 4
Midline: y = 1
y-intercept: (0, 1)
The function is not a reflection of its parent function over the x-axis.
Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.

3. A sine function has the following key features:
Period = 4π
Amplitude = 2
Midline: y = 3
y-intercept: (0, 3)
The function is a reflection of its parent function over the x-axis.
Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.

4. picture

5. picture

Answers

Problem 1

See the attached image (figure 1)

16pi seems like a typo. I'm going to assume that it's a fraction and it is 1/(6pi)
f = 1/(6pi) = frequency
T = 1/f = 1/(1/(6pi)) = 6pi
Amplitude = 2
a = 2
b = 2pi/T = 2pi/(6pi) = 1/3
Midline: y = 3
d = 3

The function is
y = a*sin(bx-c)+d
y = 2*sin(1/3*x-0)+3
y = 2*sin(x/3)+3

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

Problem 2

See the attached image (figure 2)

T = 12 is the period
a = 4 is the amplitude
b = 2pi/T = 2pi/12 = pi/6
y = 1 is the midline so d = 1
The y intercept is (0,1) which is the midline, which indicates no phase shifts have occurred so c = 0

The function is
y = a*sin(bx-c)+d
y = 4*sin((pi/6)x-0)+1
y = 4*sin((pi/6)x)+1

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

Problem 3

See the attached image (figure 3)

Period = 4pi
T = 4pi
b = 2pi/T = 2pi/(4pi) = 1/2 = 0.5
Amplitude = 2
a = 2
Midline: y = 3
d = 3
y-intercept: (0,3)
The function is a reflection of its parent function over the x-axis, so 'a' is negative meaning a = -2 instead of a = 2

The function is
y = a*sin(bx-c)+d
y = -2*sin(0.5x-0)+3
y = -2*sin(0.5x)+3

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

Problem 4

See the attached image (figure 4)

a = 10 which is half of the distance between the highest and lowest points
T = 8 is the period
b = 2pi/T = 2pi/8 = pi/4
c = -pi/2 is the phase shift since its really a cosine graph
d = 0 is the midline

The function is
y = a*sin(bx-c)+d
y = 10*sin((pi/4)*x+(-pi/2))+0
y = 10*sin((pi/4)*x+pi/2)

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

Problem 5

See the attached image (figure 5)

a = 2 is the amplitude since it bobs up and down this distance from the midline
T = 8 seconds is the period (double that of the time it takes for it to go from the highest to the lowest point)
b = 2pi/T = 2pi/8 = pi/4
c = 0 is the phase shift as the buoy starts at normal depth of 20 meters
d = 20 is the midline

The function is
y = a*sin(bx-c)+d
y = 2*sin((pi/4)x-0)+20
y = 2*sin((pi/4)x)+20

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

Answer:

1. Picture Below

2. Ordered Pair : (0,1) (3,5) (6,1) - Function: f(x)=4sin(pi/6x)+1

3. Ordered Pair : (0,3) (3.14,5) (6.27,3) - Function: f(x)= 2sin(1/2x)+3

4. I have no idea.

5. Plot the first point at (0, 20) and the second point at (2, 22)

Step-by-step explanation:

What is 8.3x10^-9 in standard form?

Answers

.0000000083

( eight zeros.)

What is the domain of the given function? {(3, –2), (6, 1), (–1, 4), (5, 9), (–4, 0)}

{x | x = –4, –1, 3, 5, 6} {y | y = –2, 0, 1, 4, 9} {x | x = –4, –2, –1, 0, 1, 3, 4, 5, 6, 9} {y | y = –4, –2, –1, 0, 1, 3, 4, 5, 6, 9}

Answers

the domain is all the x values that makes the graph work so its -4,-1,3,5,6

What is the domain of the given function?
{(3, –2), (6, 1), (–1, 4), (5, 9), (–4, 0)}
The domain is formed by the values of x, the first value of the ordered pairs (x,y), in this case 3, 6, -1, 5, and -4. Ordering the values:
Domain of the function={x | x = –4, –1, 3, 5, 6}
Answer: First option {x | x = –4, –1, 3, 5, 6}

The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. The function below shows the relationship between f(x) and x:

f(x) = 10(1.3)x

Which of the following graphs best represents the function?

Graph of f of x equals 1.3 multiplied by 10 to the power of x
Graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity
Graph of f of x equals 10 multiplied by 1.3 to the power of x
Graph of f of x equals 1.3 to the power of x

Answers

3rd one.

f(x) = 10(1.3)^x

Answer:

The graphs that best represents the function is:

Graph of f(x) equals 10 multiplied by 1.3 to the power of x.

Step-by-step explanation:

The function that shows the relationship between f(x) and x: is:

[tex]f(x)=10\times (1.3)^x[/tex]

Graph of f(x) equals 1.3 multiplied by 10 to the power of x.

This means that the expression is given by:

[tex]f(x)=1.3\times (10)^x[/tex]

Hence, option: a is incorrect since it is not equal to the given function f(x).

Graph of exponential function going up from left to right in quadrant 1 through the point (0, 0) and continuing towards infinity.

In the given function f(x) when x=0 we have:

[tex]f(x)=10\times (1.3)^0\\\\\\f(x)=10\neq 0[/tex]

Hence, option: b is incorrect.

Graph of f(x) equals 10 multiplied by 1.3 to the power of x.

This means that the function f(x) is given by:

[tex]f(x)=10\times (1.3)^x[/tex]

which is obviously true.

Hence, option: c is correct.

Graph of (x) equals 1.3 to the power of x.

This means that the function f(x) is given by:

[tex]f(x)=(1.3)^x[/tex]

which does not m,atches the actual expression.

Hence, option: d is incorrect.

The table shows different geologic time periods: Period Number of Years Ago Jurassic 2.08 ⋅ 108 Silurian 4.38 ⋅ 108 Tertiary 6.64 ⋅ 107 Triassic 2.45 ⋅ 108

Order the time periods from oldest to youngest. (4 points)

1. Tertiary, Jurassic, Triassic, Silurian
2.Jurassic, Triassic, Silurian, Tertiary
3.Silurian, Triassic, Jurassic, Tertiary
4.Triassic, Silurian, Jurassic, Tertiary

Answers

I think it is C, or #3 Hope this helps pls mark brainliest if correct

PLEASE HELP ASAP! BRAINLIEST TO BEST/RIGHT ANSWER

Answers

the CORRECT answer is B because the person got it wrong saying A

Two numbers are in the ratio of 2 to 3. If the smaller number is 18, the larger number is _____. 21 27 36 54

Answers

x*3/2 - it's the larger one. The smaller number is 18. => the larger number is 18*3/2=27

the answer is 27

Answer: If two numbers are in a ratio of 2 to 3, this means that two times one number is equal to 3 times the other, or:

2*X = 3*Y, where X and Y are any numbers, and X is the bigger one and Y is the smaller one.

If Y=18, then:

2*X = 3*18 = 54

X=54/2 = 27

So the answer is 27.

The height of a tree was 4.8m .After one year the height of the tree was increased by 12.5%.find its new height

Answers

The new height of the tree after it has increased by 12.5% is 5.4 meters

To find the new height of the tree after it has increased by 12.5%, we start by calculating the increase in height using the following equation

Increase = 12.5% of the original height

The original height is given as 4.8m. So, the formula can be expressed as follows

Increase = 12.5% * 4.8

Increase = 0.125 * 4.8

Increase = 0.6 meters

Add the increase to the original height

New height = Original height + Increase

The above equation can then be expressed as follows

New height = 4.8 + 0.6

New height = 5.4 meters

PLEASE HELP ASAP!! WILL GIVE BRAINLIEST

Answers

I believe that it is D, so sorry if it's wrong, I haven't done this in a while.

i think you should have studied because it's real easy

And it's obvious that it's d

Time 6 years Interest rate 1.9% Principal- $850 What amount of simple interest will be earned? $16.15 O $96.90 $946.90 $9,690.00

Answers

Amount of simple interest will be earned is $96.90

6.
Evaluate cot 290º. Round your answer to the nearest hundredth.

–1.06
–0.36
2.92
–2.75,

Answers

The answer to your question is -0.36

The solution this is the following:
cot(110°) = -cot(70°)
cot(70°) = -1/tan(70°)
tan(70°) ≈ 2.75
-1/tan(70°) ≈ -0.36

A trinket factory can produce 3,000 trinkets per day. The warehouse has a capacity of 50,000 trinkets. Currently, there are 8,000 trinkets in the warehouse. Assume that no trinkets are going to be shipped out of the warehouse for a while. 1) Write an equation for the number of trinkets in the warehouse after days. 2) How many days will it take to fill the warehouse?

Answers

An equation for the number of trinkets in the warehouse after x days:
8,000 + 3,000x = 50,000

How many days will it take to fill the warehouse?

8,000 + 3,000x = 50,000
3,000x = 42,000
x = 14

The equation for number of trinkets after x days is 8,000 + 3000 * x = y and the number of days required to fill the warehouse is 14.

What is an Equation?

An equation is a mathematical statement that is formed when two algebraic expressions are equated using an equal sign.

The trinket factory can produce 3,000 trinkets per day

Total Capacity of warehouse is 50,000 trinkets

The trinkets in the warehouse is 8,000

The equation for the number of trinkets in the warehouse after x days is

Let y represents the total number of trinkets after x days

8,000 + 3000 * x = y

The days required to completely fill the warehouse is

8,000 + 3,000 * x = 50,000

3,000* x = 42,000

x = 14

To know more about Equation

https://brainly.com/question/10413253

#SPJ2

evaluate the principal square root of 36 .
answer ??? help plz thank u :)),

Answers

The principal square root of a number is the positive square root of that number √36 can be +6 or -6 But the positive square root is +6 and that is the principal square root.

Please HELP.. MEDAL/ FAN
The ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years. Approximately what percent of the students are between 14 and 18 years old?
24.17%
62.47%
30.85%
93.32%,

Answers

The percentage of the students are between 14 and 18 years old is 62.47% .
So the solution for this is that P(students between 14 and 18 years) = 0.9332 - 0.3085 = 0.6247.
To get the percentage, just multiply it by 100 and you will get the answer.

What is the measure of
A. Cannot be determined
B. 74
C. 16
D. 32

Answers

The answer would be D. 32

Why? The triangle in the problem is an isosceles triangle. That means the two legs of the triangle are equal and the angle opposite to the equal legs are also equal.

Therefore, angle C is also 74°.

The sum of the interior angles of a triangle is equal to 180°.
Thus,
180° = ∡A + ∡B + ∡C
180° = 74° + ∡B + 74°
180° = 148° + ∡B
∡B = 180° - 148°
∡B = 32°

Which value(s) of x would result in Set B being a function of the values in Set A? Select Function or Not a Function for each value of x. Are the following numbers a function or not a function

Answers

To determine if Set B is a function of the values in Set A, we need to ensure that each value of x in Set A has only one corresponding value in Set B:

-2: Function5: Function0: Not a Function1: Function-3: Function

For each value of x, we can determine if Set B is a function or not by checking if there is only one corresponding value in Set B.

For x = -2, there is only one corresponding value in Set B, so it is a function.

For x = 5, there is only one corresponding value in Set B, so it is a function.

For x = 0, there are multiple corresponding values in Set B, so it is not a function.

For x = 1, there is only one corresponding value in Set B, so it is a function.

For x = -3, there is only one corresponding value in Set B, so it is a function.

Therefore, Set B is a function of the values in Set A for all values of x except for x = 0.

Choose the correct discount or markup. If an item has a retail price retail price = $995 and a discount of 15%, how much is the discount? It is $ options a. 149.25 b. 139.25 c. 144.50

Answers

To find the discount, simply multiply $995 times .15 (which is the decimal equivalent of 15%). 995 x .15 = 149.25
So the correct answer is (a). 149.25

Final answer:

The discount amount on an item with a retail price of $995 and a 15% discount is $149.25 that is option a is correct answer.

Explanation:

Discount Amount Calculation:

Calculate the discount amount by multiplying the retail price by the discount percentage.

Discount = $995 x 0.15 = $149.25.

The correct answer is $149.25 (option a).

I need both answers now!

Answers

Part A:
Answer Is (B)

Part B:
Answers are: (C and E)

Hope this helps.

Eighty percent of the dogs have completed obedience classes. How many of the dogs have completed obedience classes? Five dogs of different breeds 4 dogs 3 dogs 2 dogs 1 dog

Answers

let
x--------> number of dogs that completed the obedience class

we know that
total number of dogs=5
Eighty percent of the dogs have completed obedience classes
so
x=0.80*5------> x=4

the answer is
4 dogs have completed obedience classes

Answer:
4 dogs have completed the obedience classes

Explanation:
We are given that 80% of the dogs completed the obedience classes and that the total number of dogs who attended the class was 5

This means that 80% of the 5 dogs have completed the class

Therefore:
number of dogs that completed the class = 80% * 5
= 0.8 * 5
= 4 dogs

Hope this helps :)

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The oxidation number of hydrogen in sodium hydride (NaH) what do the slums stand for and how did they threaten democracy If you flip three fair coins, what is the probability that you'll get all three tails? Andrew Jackson opposed the Second National Bank because he thought that it gave an unfair advantage to _____. If x = 12 cm, y = 8 cm, z = 10 cm, and w = 3 cm, what is the surface area of the geometric shape formed by this net? A. 288 cm2 B. 144 cm2 C. 192 cm2 D. 160 cm2Here's the shape: https://media.studyisland.com/pics/127804pic7.png Which of piaget's stages of cognitive development is deshandra in? Established during the Middle Ages, guilds were associations of skilled artisans designed to institute quality standards, establish training programs, and set prices in industries such as glassblowing or masonry. What most likely happened to the guild system following industrialization? A.Guilds likely incorporated new skilled artisans with industrialization-era skills.B.Guilds likely became more powerful as fewer people learned trade secrets for these industries.C.Guilds likely became less powerful as artisans were replaced by machinery.D.Guilds likely expanded to include factory workers, laborers, and unskilled workers. at the park, 4/7 of the children are boys. if there are 8 boys at the park, how many are girls? Which of these is a double-reeded instrument of the woodwind family? flute piccolo french horn oboe clarinet trumpet all of these are double-reeded instruments of the woodwind family none of these are double-reeded instruments of the woodwind family? Which indicates that maria has well-developed selective attention skills?a. it takes a great deal of noise to get maria to notice that someone is talking to her.b. it takes her a long time to complete a task that requires vigilance.c. she can pay attention to two people talking at the same time.d. she can pay attention to her teacher's voice while ignoring the voices of other students who are talking at the same time? Oliver earns $93 per week mowing lawns in his neighborhood. Which expression can be used to show how much money he earns in 6 weeks? What percent of 20 is 2? During photosynthesis, specific pigments absorb light energy, which is then used to fuel the building of sugar molecules. which colors correspond to the wavelengths of light that are strongly absorbed by each pigment? some pigments absorb more than one color of light strongly. The main reason to set a field size in access is to: 1a. the hmgr-n3 allele fails to bind with srebp. what part of the gene is broken in this allele? (circle one) If you are over _____ blood alcohol concentration (BAC), you are in violation of the law. Is a higher value for k result in a stiffer/less stretchy spring, or a less stiff/more stretchy spring? Rob creates a Course_Details table that has four columns: Course_ID, Course_Name, Semester and Credits. A course may have 0.5 credit if it is for 1 semester and 1 credit if it is for 2 semesters. Which field should Rob assign as a primary key in the table?Rob should assign the field as the primary key in this table. Abcd is a parallelogram find the measure of a if b is (7x+13)degrees and d d is (8x-8)degrees brainly A reader of a book wants to estimate the mean word length in the book they are currently reading. they randomly select 19 pages from the book and count the length of 5 words they randomly selected on each of those pages. the table shows the results from the survey. using the sample results estimate the mean word length of any word in the book.a.5.22 lettersb.5.49 lettersc.5.77 lettersd.5.92 letters