illustrative
Mathematics
esson 3 Practice Problems
1. The box plot represents the distribution of speeds, in miles per hour, of 100 cars as
they passed through a busy intersection.
4 8 12 16 20 24 28 32 36 40 44 48
speed of cars (miles per hour)
a. What is the smallest value in the data set? Interpret this value in the situation.

Answers

Answer 1

The smallest value is 8.

the largest value is 44.

the median is 20.

the first quartile(Q1) is 12.

the third quartile (Q3) is 24

it represents among 100 cars the smallest speed is equal to 8 mph when passing through a busy intersection.

it represents among 100 cars the biggest speed is equal to 44 mph when passing through a busy intersection.

it represents among 100 cars half of them, their speed is equal to or less than 20 mph when passing through a busy intersection.

it represents among 100 cars 25% of  them, their speed is equal to or less than 12 mph when passing through a busy intersection.

it represents among 100 cars half of them, their speed is equal to or less than 20 mph when passing through a busy intersection.

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Related Questions

Which graph represents the inequality 3y - 5x≤-6?

Answers

Answer: Graph A represents the given inequality 3y−5x>−6. Option A is correct.

From the graphs, the graph is to choose which best describes the inequality 3y−5x>−6

Step-by-step explanation: hope this helps

Graph A represents the inequality 3y - 5x≤-6. Correct option is A. The inequality 3y - 5x ≤ -6 represents a linear inequality in two variables, y and x.

To graph this inequality, we can rearrange it into slope-intercept form (y = mx + b), where m is the slope, and b is the y-intercept.

Let's rearrange the given inequality:

3y - 5x ≤ -6

First, add 5x to both sides of the inequality:

3y ≤ 5x - 6

Now, divide both sides by 3 to isolate y:

y ≤ (5/3)x - 2

Now, you have the inequality in slope-intercept form:

y ≤ (5/3)x - 2

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4 1/4 *-1/2= I really help on this it's for homework and I don't know if our teacher will be helping with it so please please please will somebody help me please.

Answers

First, let’s rewrite the problem:

4 1/4 • -1/2

There are a couple of things to do, so let’s start by converting -1/2 to fourths:

1 • 2 = 2

2 • 2 = 4

When we add the negative sign back, we will find that -1/2 = -2/4. Now, let’s convert the mixed number into an improper fraction:

4 1/4

4 • 4 = 16

16 + 1 = 17

Our improper fraction conversion is 17/4.

Now we can solve accordingly:

17/4 • -2/4 = -34/16

This fraction can be reduced:

-34 / 2 = -17

16 / 2 = 8

Our final fraction is -17/8.

4 1/4 • -1/2 = -17/8 OR -2 1/8

PLEASE HELP ME ASAP!!!!!

What is the first step in making a frequency chart?
A) Doesn't matter
B) Write down numbers
C) Draw a box
D) Figure out what you are comparing

Answers

In my opinion the Letter C. is the most reasonable.

Solve for X
-1/2+6/7 x+9.7

Answers

The equation solved for x gives  -0. 61

What are algebraic expression?

Algebraic expressions are expressions that comprise variables, terms, factors, constants and coefficients.

They are also made up of certain arithmetic operations such as addition, subtraction, multiplication, division, bracket, parenthesis, etc.

Given the expression;

-1/2 + 6/7  = x + 9.7

Find the lowest common multiple

-7 + 12/14 = x + 9. 7

Add the numerators

5/ 14 = x + 9. 7

Find the quotient

0. 36 = x + 0. 97

collect like terms

x = 0. 36 - 0. 97

x = -0. 61

Thus, the equation solved for x gives  -0. 61

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Explain why the expansion at the right of log₄√t/s is incorrect. Then do the expansion correctly.

Answers

The correct expansion of log₄√t/s is 1/2 log₄(t/s).

Logarithms is another way of writing exponents. Logarithm is nothing but another way of expressing exponents and can be used to solve problems that cannot be solved using the concept of exponents only. Understanding logs is not so difficult. To understand logarithms, it is sufficient to know that a logarithmic equation is just another way of writing an exponential equation.

Logarithm and exponent are inverse forms of each other. One can understand this from the section below. Initially, a mathematician named John Napier introduced logarithms for making calculations in a simple way and this concept is quickly adopted by other scientists, engineers, etc.

Given that, log₄√t/s and we have to expand this logarithmic function having base 4 accordingly. So, let's proceed to solve this logarithmic expansion.

log₄√t/s = log₄((t/s)^(1/2))

= log₄((t/s)^(1/2))

Apply log rule, logₐ(xᵇ) = b.logₐ(x), assuming x ≥ 0

= 1/2 log₄(t/s)

Hence, log₄√t/s = 1/2 log₄(t/s) is the correct expansion.

Therefore, 1/2 log₄(t/s) is the required answer.

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If you can't help me with that answer then can you help me with this one please?

Answers

Answer:

73° & 107°

Step-by-step explanation:

1. Those angles are supplementary, so they add up to 180 degrees.

2. (8x - 20) + (8x + 8) = 180

3. You need to add both 8x's together to make 16x. Do the same with -20 & 8. That makes -18. This is binomial addition.

4. 16x - 18 = 180

5. Add 18 to both sides

6. 16x = 198

7. Divide both sides by 16

8. x = 12.375

9. Plug in your x for both angles.

20 customers are eating dinner at a local restaurant. The restaurant accepts cash or credit as forms of payment. Of the 20 customers, 4 have enough cash to pay for their meal, 16 have a credit card, and 3 have enough cash and a credit card. Using this information, answer the following questions. 1. What is P(A), the probability that a customer has enough cash? 2. What is A(B), the probability that a customer has a credit card? 3. What is P(A and B), the probability that a customer has enough cash and a credit card? 4. What is P(A or B), the probability that a customer has enough cash or a credit card?​

Answers

P(A) = 4 / 20, this is the probability that a customer has enough cash

P (B) =16 / 20, this is the probability that a customer has a credit card.

P (A and B) = 3 / 20, this is the probability that a customer has enough cash and a credit card.

The probability that a customer has enough cash or a credit card is 0.85.

Probability is defined as the ratio of favorable outcomes to a total number of outcomes.

It is given that, 20 customers are eating dinner at a local restaurant.

The total number of customers = 20

Of the 20 customers,

4 have enough cash to pay for their meal

16 have a credit card and

3 have enough cash and a credit card.

Event A is the probability that a customer has enough cash

Event B is the probability that a customer has a credit card.

P(A) = 4 / 20 = 1 / 5, this is the probability that a customer has enough cash

P (B) =16 / 20 = 4 / 5, this is the probability that a customer has a credit card.

P (A and B) = 3 / 20, this is the probability that a customer has enough cash and a credit card.

To find the probability that a customer has enough cash or a credit card :

The formula used is P(A or B) = P(A) + P(B) - P(A∪B)

P (A or B) = P(A) + P(B) - P (A and B)

                = 4 / 20 + 16 /20 - 3 / 20

                = 17 / 20

                = 0.85

Therefore, The probability that a customer has enough cash or a credit card is 0.85.

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Point t is on line segment \overline{su} su . given st=3x+2,st=3x+2, tu=3x+4,tu=3x+4, and su=5x+9,su=5x+9, determine the numerical length of \overline{su}. su .

Answers

Given that Point T is on line segment SU, T is collinear with S and U, and the numerical length of SU is 24.

Since Point T is on line segment SU, then S, T, and U are collinear.

Collinear points refers to the points that lies on the same straight line.

IF S, T, and U are collinear, then the sum of the numerical length of ST and the numerical length of TU is equal to the numerical length of SU.

ST + TU = SU

Given:

ST = 3x + 2

TU = 3x + 4

SU = 5x + 9

Substitute the expressions in the equation and solve for x.

ST + TU = SU

3x + 2 + 3x + 4 = 5x + 9

3x + 3x - 5x = 9 - 2 - 4

x = 3

Substitute the value of x in the expression for SU.

SU = 5x + 9

SU = 5(3) + 9

SU = 24

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?(21)+?(4)=300 what is the answer

Answers

[tex]21x + 4y = 300[/tex]

We have infinitely many numbers that make this equation hold. For example:

[tex](x,y)=(69,-287.25) \\ (x,y)=(1,69.75) \\ (x,y)=(7,38.25)[/tex]

This could go on forever, so your question does not have a right answer.

given that x is a number that is not negative, kelvin conjectured that x2>x 1. which value is a counterexample to kelvin's conjecture? −12 negative one half −2 negative 2 0 0 5

Answers

0 is a counterexample to Kelvin's conjecture.

Firstly rewriting the expression -

x²>x + 1

Now, we will use hit and trial method to find the counterexample to Kelvin's conjecture.

We can not use first two options, because question mentions that x is not negative. So, starting our hit and trial method from 0.

We will keep the value in expression to find the result -

0²>0 + 1

0 > 1

This contradicts or opposes Kevin's statement, as 0 is not greater than 1.

Trying the second number -

5²>5 + 1

25 > 6

This is in accordance with Kevin's conjecture or conclusion, as 25 is greater than 6.

Hence, 0 is the value which is a counterexample to Kelvin's conjecture.

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The complete question is -

Given that x is a number that is not negative, Kelvin conjectured that x^2>x+1 .

Which value is a counterexample to Kelvin's conjecture?

−12

−2

0

5

What is the solution set for the open sentence with the given replacement set?
13 x 7, {4, 5, 6, 7}
1.4
2.5
3.6
4.7

Answers

The solution set for the open sentence with the given replacement set is; 6

What is the solution set of the given equation?

We are given the equation as;

13 - x = 7

To solve this , let us use subtraction property of equality to subtract 13 from both sides to get;

13 - 13 - x = 7 - 13

-x = -6

Use division property of equality to divide both sides by -1 to get;

x = 6

Now, the set of possible solutions is  {4, 5, 6, 7}. Thus, our solution falls within the set.

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So basically what you have to do is subtract the above ground level (1) with ground level (4) and you’ll get 3 which is negative bc it counts as below ground level . Now that the car rises 13 meters subtract 13-3= 10 and add it with the other ground level 6 meters . 10-6=4

Answers

Rollercoaster Car is at 4 m above the ground by using integer concept.

As per the question statement, Rollercoaster Car that goes above and below the ground.

Before solving the question, we need to know the concept of integer operations on a number line.

Here the car is [tex]1 meter[/tex] above the ground level and then goes 4 meter down.

So the position is [tex]1-4=-3 meter[/tex] or 3 meter below the ground level.

Now it rises 13 meter above the ground. So now the position is [tex]-3+13 = 10 meter[/tex] or 10 meter above the ground.

Now it again falls by 6 meter so position is [tex]10-6 = +4 meters[/tex] or 4 meters above the ground.

Therefore the final position is 4 meters above the ground level.

Integers: a number without a fraction (no decimals). Includes the digits 1, 2, 3, etc., in counting, zero {0}, and the antithesis of the numerals "-1, -2, -3,... " We can classify them all in the following order: {..., -3, -2, -1, 0, 1, 2, 3, ...}

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Solve the equation.
1/3 (
(9x + 3) = 3x + 1

Answers

Answer: x=0

Step by step explanation:

1/3 (9x+3) =3x+1

=3x+1=3x+1

=3x-3x=1-1

=0x=0

So x=0

I hope this helps you! Have a nice day!!!!

37 or 19 or 31 creo que te servirá

The midpoint of BC is M(5, 2). One endpoint is B(8, 0). Find the coordinates of the other endpoint C. Write the coordinates as decimals or integers. C = (, ) Submit

Answers

The coordinate of point C from the given expression is (2, 4)

Midpoint of coordinates

The formula for calculating the midpoint of coordinates is given by the equation shown below:

Midpoint = {(x₁+x₂)/2, (y₁+y₂)/2}

Given the following parameters

Midpoint = M(5, 2)

B(8, 0)

Required

Coordinate point C

Substitute the given parameters

5 = (8+x₂)/2

5(2) = 8+x₂

10 = 8+x₂

x₂ = 2

Similarly

2 = (0+y₂)/2

2(2) = 0+x₂

4 = 0 +y₂

y₂ = 4

Hence the coordinate of point C from the given expression is (2, 4)

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-5x^2-2x^3-4x write the polynomial in standard form then identify the polynomial by the number of terms

Answers

Answer: - 2x³ - 5x² - 4x, trinomial

Step-by-step explanation:

    When writing a polynomial, the standard form is to have the terms ordered from highest power to lowest power. 3 > 2, so we will reorder them as so;

- 5x² - 2x³ - 4x ➜  - 2x³ - 5x² - 4x

    To identify the polynomial, we will look at the number of terms. This polynomial has three terms, so it is a trinomial.

- 2x³ - 5x² - 4x

[1] - 2x³

[2] - 5x²

[3] - 4x


What is the solution of the system?
4 x+2 y=4
6 x+2 y=8
(F) (-2,2)
(G) (2,-2)
(H) (1,2)
(I) (-1,2)

Answers

For the system of equations 4 x+2 y = 4 and 6 x+2 y = 8, the solution is (2, - 2).

We are given the system of equations as:

4 x+2 y = 4    … (1)

6 x+2 y = 8    … (2)

We need to solve it to find the value of x and y.

Subtracting equation (1) form equation (2), we get that:

6 x - 4 x + 2 y - 2 y = 8 - 4

Combining the like terms, we get that:

2 x = 4

x = 4 / 2

x = 2

Now put it in equation (1) to get the value of y

4 (2) + 2 y = 4

8 + 2 y = 4

2 y = - 4

y = - 2

(x, y) = (2, - 2)

Therefore, we get that, for the system of equations 4 x+2 y = 4 and 6 x+2 y = 8, the solution is (2, - 2).

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Could someone please solve and explain this to me?

2ab^-2 • (b^2)^-2

(*if a number has ‘^’ before it, that means it’s an exponent).

Answers

Answer:

[tex]2ab^{(-6)}[/tex]

Step-by-step explanation:

Multiply exponents/group exponents

[tex]2ab^{(-2)} \times b^{(-4)}\\2ab^{-2 + -4}\\2ab^{-6}[/tex]

What is the greatest common factor of 24 and 4?

Answers

Answer: 2

UvU This might help might not

work out the mean for this data set: 9.1, 1, 3.7, 6.1, 9.8

Answers

Answer: 5.94

Step-by-step explanation: In order to find the mean, you first add up all the values in the data set and then divide this number by the number of values!

Hope it helps ^^

What is 0.00784 rounded to 2 significant figures? Pls I need this quick

Answers

The answer would be 0.0078

The decimal number 0.00784 rounded off to 2 decimal places is 0.

What is rounding off of numbers?

We round off numbers to make them easier to remember and it also keeps its value approximately to the place it has been rounded off.

To round off any number to any place we'll look for the digit next to that place and if it is equal to or greater than 5 we'll add one to the previous digit and make all the digits after it zeroes and if the digit is less than 5 we do not add one to the preceding digit and simply make all the digit after it to zeroes.

Given, 0.00784 and we have to round off to two significant figures means

the number will have 2 digits after the decimal place.

Now, 0.00784

= 0.00780.

= 0.0078.

= 0.0080.

= 0.008.

= 0.010.

= 0.01.

= 0.00.

= 0.

So, 0.00784 rounded off to 2 decimal places is 0.

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You owe $1,032.56 on a credit card with an 11.25% APR. The minimum due is $67.00
and you pay it at the beginning of the month. How much interest is accrued by the end of the month?

Answers

Interest accrued at the end of the month is $1.41.

What is the interest on credit card?

Credit cards impose interest on any sums that you don't pay by the due date each month. Interest accrues everyday when you hold a balance from month to month based on the so-called Daily Periodic Rate (DPR). DPR is only another term for your daily interest charge.

Step 1: Make the initial payment of $882 ($1,032 - $150).

Step 2: $882 times 1.00938 is $890.27

Step 3: Pay $1,032 multiplied by 1.00938 ($1,041.68) at the conclusion.

Step 4. $1,041.68 - $150= $891.68

The interest for the first month is $1.41.

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Seven-tenths of half a century is please help me​

Answers

The meaning and equivalent of the word phrase; seven-tenths of half a century as given in the task content is; 35 years.

What is the meaning and equivalent the word phrase; seven-tenths of half a century as given in the task content?

According to the task content, it follows that the meaning and equivalent of seven-tenths of half of a century is to be determined.

On this note, since it follows from place value that seven-tenths means; 7 × (1/10) = 7/10.

Also, since half a century means; (1/2) × 100 years = 50 years.

Ultimately, the word phrase given in the task content is equivalent to;

= (7/10) × 50 years.

= 35 years.

Ultimately, the meaning and equivalent of the word phrase; seven-tenths of half a century as given in the task content is; 35 years.

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This year, a small business had a total revenue of $14,200. If this is 29% less than their total revenue the previous year, what was their total revenue the previous year?

Answers

The total revenue the previous year is $20,000

How to calculate the total revenue ?

This year the total revenue of the small  business is $14,200

This amount is 29% less than the total revenue in the previous year

Therefore the total revenue in the previous year can be calculated as follows

100 - 29

= 71

= 71/100

= 0.71

Total revenue= 14,200/0.71

= 20,000

Hence the total revenue the previous year is $20,000

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How do you write 4/25 as a percentage?

Answers

Answer: 16% :)

Step-by-step explanation: 25x4=100, and 4x4=16. so 16/100, which equals 16%

Answer:

[tex] \sf {\large{16 \: \%}}[/tex]

Step-by-step explanation:

We know that

4/25 is the same as 4÷25

Then using

Long Division for 4 divided by 25 gives us

0.16

Converting our number to a percentage:

0.16×100

=16%

Which statement explains the relationship between terms in the table? XOSO5 10 15 20 Each term in Pattern X is of the corresponding term in Pattern Y. Each term in Pattern X is of the corresponding term in Pattern Y. Y O 15 30 45 60 Each term in Pattern X is 3 times the corresponding term in Pattern Y. Each term in Pattern X is 5 times the corresponding term in Pattern Y.​

Answers

Each term in Pattern X is 1/3 of the corresponding term in Pattern Y.

Hello Please Help for Brainlist +20 points its a geometry Question !!! (Math)

Answers

20 degrees is your angle

A box of cereal can be purchased in the large size, which is 15 ounces for $3.14, or the family size, which is 24 ounces for $5.34. Which size box of cereal has the lowest price per ounce, and what is the amount?

a -Large size at $0.21 per ounce
b-Large size at $0.22 per ounce
c-Family size at $0.21 per ounce
d-Family size at $0.22 per ounce

Answers

Given the values that we have here for the large sizes and the family size of cereal the one that has the lowest price per ounce is that of the Large size at $0.21 per ounce

How to solve for the sizes of the cereals

For the family size

We would first have to divide 5.34 by 24

= 5.34 / 24

= 0.22 per dollar

For the large size we have

15 ounces for $3.14

= 3.14 / 15

= 0.21 dollars

Hence we can see that the size of the cereal that is the lowest price per ounce is given as Large size at $0.21 per ounce

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someone help me please!!​

Answers

Answer: Distance point is 8.

Step-by-step explanation:

You would do 2 by the power of 2 and double that (8)

(1/5) to the power of 2 X (1/5) to the power of 2

Answers

Answer: 0.0016

Step by step explanation:

Answer:

=1/5⁴ = 1/625

Step-by-step explanation:

(1/5)² (1/5)² = (1/5)⁴

= 1⁴ / 5⁴

= 1 / 625

PLEASE HELP ME ASAP!!!!

Which of these is NOT a good use for a frequency chart?
A) Finding out how many pieces of pizza everyone ate
B) Finding out a percentage of a whole
C) Asking people where they went on vacation
D) All of these are good uses of a frequency chart.

Answers

Finding out a percentage of a whole

Answer:

All are good ideas for a frequency chart.

But not 100% sure on A and C

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