Josiah kept track of how many songs of each genre were played in an hour from his MP3 player. The counts are displayed in the table below. He has a total of 1,500 songs on his player. Josiah predicted the number of rock songs on his MP3 player to be 300 songs. Which statements about his solution are true? Select three choices. Josiah’s Music Sample 1 Sample 2 R & B 5 R & B 4 Pop 4 Pop 3 Classical 3 Classical 5 Jazz 2 Jazz 4 Rock 6 Rock 4 Josiah’s work: StartFraction 10 over 20 EndFraction = StartFraction x over 1,500 EndFraction. StartFraction 10 times 30 over 20 times 30 EndFraction = StartFraction x over 1,500 EndFraction. 300 = x. He should have found the average of the number of rock songs by averaging 4 and 6 to get 5. He did not multiply the numerator and denominator by the correct number to equal 1,500. His answer will be one-half of what he got because he did not divide 10 by 2 when setting up the proportion. He can only solve the proportion by multiplying the numerator and denominator by a common multiple. He should have multiplied the numerator and denominator by 75, not 30, because 20 times 75 = 1,500

Answers

Answer 1

Answer:

Answer is B)

Step-by-step explanation:

Josiah's mistake is (b) He did not multiply the numerator and denominator by the correct number to equal 1,500

The proportion is given as:

Multiply both sides by 1500

Evaluate the expression on the right-hand side

Multiply 10 by 1500 on the left-hand side

Divide 15000 by 20 on the left-hand side

Rewrite the equation as:

From the question, we can see that the products are not well carried out.

Hence, Josiah's mistake is (b)

Answer 2

He got the  rock songs part right. He did not multiply the numerator and denominator by the correct number until 1500.

What is Fraction ?

What is fraction and example?

A fraction is numerical value that is a part of a whole. It is evaluated by dividing a whole into number of parts

Types of Fractions Proper fraction,Improper fraction,Mixed fraction,Like fractions,Unlike fractions,Equivalent fractions.

The statements that are true about Josiah's solution are:

He correctly found the proportion of rock songs  by setting  the ratio (number of rock songs in the sample) / (total number of songs in the sample) = (number of rock songs in the MP3 player) / (total number of songs in the sample). sample MP3 player) and solving for x:

Start Fraction 10 over 20 EndFraction = Start Fraction x over 1500 End Fraction.

Initial fraction 10 times 30 over 20 times 30 final fraction = initial fraction x over 1500 final fraction.

300 = x.

 He didn't hit the average of the  rock songs right because the average of 4 and 6 is 5, not 300.  

He did not multiply the numerator and denominator by the correct number to 1500 because he should have multiplied both by 75 instead of 30 to get:

Initial fraction 10 times 75 over 20 times 75 final fraction = initial fraction x over 1500 final fraction. He did not have to divide 10 by 2 when he determined the ratio, because the ratio is already in its simplest form. So the real arguments are:

He got the  rock songs part right. He did not multiply the numerator and denominator by the correct number until 1500. He did not have to divide 10 by 2 to determine the ratio.

Learn more about Proper fraction here

https://brainly.com/question/1601136

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Related Questions

This morning, Sam's car had 19.37 gallons of fuel. Now, 1.6 gallons are left. How much fuel did Sam use?

Answers

Answer:17.77

Step-by-step explanation:

have a good day

17.77 would be the correct answer, all you have to do, is subtract 19.37 and 1.6 and WALA!

hey someone help what is 7/4 + (-4/7)

Answers

Answer: 1 5/28 or 33/28

Step-by-step explanation:

Ignore the addition sign because you have a negative, then find a common denominator: 28 then 4x7 is 28 multiply both sides of the fraction do that for both fractions then subtract the numerators and keep the denominator the same.

Answer:

1 5/28

Step-by-step explanation:

7/4 + -4/7

= 49/28 + - 16/28

= 33/28

= 1 5/28

Hope this helped

please help me standard form!!!!!! im helping my sis shes in 5th grade

Answers

Answer:

6.007

Step-by-step explanation:

Answer

There is two answers lol

700.0001

600.0001

Please help quick! this is my second to last question!

Answers

Answer:

1.) 17

2.) -6

3.) 6

4.) 14

5.) -13

Step-by-step explanation:

1. 2x8+1= 17

2. 10 - (4x4)= 10-16= -6

3. (10/5) + 4 = 2+4= 6

4. (-6 x 1/3) + 16= -2 + 16= 14

5. (8 x -1) - 5= -8 - 5= -13

1.) 17

2.) -6

3.) 6

4.) 14

5.) -13

Brainliest IF Correct!


Use the graph below to answer the question.



Determine the direction and degree of rotation used to create the image.


90° counterclockwise rotation

270° clockwise rotation

90° clockwise rotation

180° clockwise rotation

Answers

Answer:

Correct answer: 90° clockwise rotation

Jinny is selling bracelets for $3.50. So far, she has earned $301.00. She needs to earn more than $427.00 in order to meet her goal. How many more bracelets, , does she need to sell in order to reach her goal?
A.
x> 122
B.
x > 36
C.
x > 208
D.
x > 86

Answers

3.50x + 266 = 406

40x
The answer is 40. She needs to sell 40 more bracelets to reach her goal.

Multiple Rules: Write the expressions as a single power. Show or explain your thinking.

Answers

.

Look At Photo For Explanation!

Explanation:

Simplify the first expression: 1/2 to the power of 10

Add the two fully simplified exponents: 10+8=18

Answer to the question: 1/2 with the exponent of 18

!! NEEDED ASAP

For Function A: What is the slope/rate of change for the interval of f(0) to f(4)? _____
; for f(4) to f(8)? _____

BLANK OPTIONS FOR FUNCTION A: 1/4, 4, -4, -1/4

For Function B: What is the slope/rate of change for the interval of f(0) to f(4)? ____
; for f(4) to f(8)? ______

BLANK OPTIONS FOR FUNCTION B: 8, 4, 2, 1/2

FINAL QUESTION:
____ as the larger slope.
____​​​​​​​ has the larger y-intercept.
BLANK OPTIONS FOR FINAL QUESTION: Function A, Function B.

Answers

Function A
Answer: 1/4

Function B
Answer: 2

Function B has the larger slope
Function B has the larger y-intercept
Whatever she said it’s correct.

The crowd at a soccer game is estimated to be 1,200 people. The exact attendance is 1,280. What is the percent error?

Answers

Answer:

56.25%

Step-by-step explanation:

[estimated - actual] / actual × 100

3000 - 1280/1280 x 100 = 56.25%

Answer:

56.25%

Step-by-step explanation:

Which of the following numbers is irrational?

Answers

B and d are irrational numbers

Answer:

D would most likely be best

Step-by-step explanation:

Pre-Algebra 5 Brainliest, If correct

Use the image to determine the type of transformation shown.

Horizontal translation
Reflection across the y-axis
90° clockwise rotation
90° counterclockwise rotation

Answers

Answer: 90° clockwise rotation

If it were a horizontal translation, it would’ve been going left to right, which it isnt.

If it were reflected over the y-axis, the points wouldve just been reflected over to the other side, which its also not.

The 90° counterclockwise rotation is simply going the wrong way, so the 90° clockwise rotation has to be the answer.

Hope this helps! :)

Answer:

90° clockwise rotation

Step-by-step explanation:

A horizontal translation would have left the shape pointing in the same direction.

A reflection across the y-axis would bring it to a quadrant that is not shown.

90 degree counterclockwise rotation would have again taken the shape to a quadrant that is not shown.

The other answer is also correct. Their reasoning may help you understand it better, because people learn in different ways. So, I encourage that you read that as well.

I hope this will help! :)

help thank If you do help FOR 10!!!!!!!!!:D

Answers

Answer:

the color beside the coordinates are the same color as the one on the graph.

Step-by-step explanation:

mark brainliest please

Answer: Rhombus

Step-by-step explanation:

Let's plot this into a graph.

A = (3,5)

B = (5,8)

C = (7,5)

D = (5,2)

As you can clearly see in the image below, the shape is a rhombus.

Do not get confused between rhombus and parallelogram.

In a rhombus, all the four sides are equal and the diagonals intersect at 90 degrees, whereas in a parallelogram, the opposite sides are equal and the diagonals bisect each other.

Mark my answer as the brainliest!

help asap !! The following polygon is _______ and ________.

A) concaved and regular in shape
B) concaved and irregular in shape
C) convexed and regular in shape
D) convexed and irregular in shape

Answers

Answer:

B.concaved and irreregular in shape

Step-by-step explanation:

Concaved and irregular in shape (B)

50 POINTS PLS HELP ASAP
Use the inequality to answer the question.
12x−14<198
Which situation matches the inequality?

a. Jason makes 12 dollars per hour and gets a bonus of $14, making his paycheck at least $198

b. Jason makes 12 dollars per hour and gets his pay reduced by $14, making his paycheck less than $198.

c. Jason makes 12 dollars per hour and gets his pay reduced by $14, making his paycheck at least $198.

d. Jason makes 12 dollars per hour and gets a bonus of $14, making his paycheck less than $198.

Answers

Answer:

the answer is b

Step-by-step explanation:

Jackson gets 12 dollars an hour making that 12x and his pay is reduced by 14 so that would make it 12x(12 dollars an hour) - 14 (what's reduced). and if he has less than 198, b would be the only answer that works

The answer is b the second one

Yall help me please I’m struggling

BTW these are two different questions

Answers

8.
Could:(-2,1).(2,-3).(-2,5).

Could not:(5,1).
I’m not sure for -2,5

"Basketball Shots"
Suppose that a basketball player makes free throws 80% of the time. A random number generator was used to simulate 10 rounds of 8 shots each. The numbers 1, 2, 3, and 4 in the simulation represent a successful shot, while the number 5 represents an unsuccessful shot.
ANSWER PLS ITS FOR A TEST <3

Answers

Answer: c

Step-by-step explanation:

THE ANSWER IS C NO CAP PERIOD AH PERIOD AH LIKE, HOW COULD I LOSE IF IM ALREADY CHOOSE

What is an angle that is adjacent to LGK? please help im really close to finishing

Answers

Answer:

I think its angle LGB

Step-by-step explanation:

Angle LGB is adjacent to angle LGK.

How many terms are in this expression?
2+n2

Answers

Answer: Two terms

Step-by-step explanation: The expression 2 + n^2 has only two terms: a constant term 2 and a variable term n^2. So, there are two terms in this expression.

There are 3 terms in this expression yw :)

evaluate the expression when y=6 and x=8.
9y-x

Answers

Answer:

9y-x 9 × 6 - 8 = 46.

Step-by-step explanation:

46 is the anwser

Why you must add the probabilities when it is a mutually exclusive event?

Answers

In probability theory, two events are said to be mutually exclusive if they cannot occur at the same time or simultaneously. In other words, mutually exclusive events are called disjoint events. If two events are considered disjoint events, then the probability of both events occurring at the same time will be zero.

Because its impossible for both of them to happen together

The probability of A and b together equals 0 - impossible





















EVALUTE THE FOLLOWING EXPRESSION
6^2 - 7(8+6-3^2)

Answers

Answer: The sum is 1

Step-by-step explanation: 6^2-7(8+6-3^2)

36-7(8+6-9)

36-7 x 5

36-35=1

Answer:

1

Step-by-step explanation:

6² - 7 (8 + 6 - 3²)

Using BODMAS we'll have to solve what is in the bracket first.

= 6² - 7 (14 - 9)

= 6² - 7(5)

Multiply -7 by 5 still using the rule of BODMAS

= 6² - 35

= 36 - 35

= 1

Which angles are complementary to AFB? Select all that apply.

Answers

Answer:

Angle BFC

Step-by-step explanation:

When an angle is complementary to another angle, that means they sum to 90 degrees.

Angle EFD is vertical to Angle AFC, so they are congruent. Because angle EFD is 90 degrees, and angle AFC is congruent, it is also 90 degrees.

So, we see, angle AFB + angle BFC = 90 degrees.

Angle BFC is complementary to AFB

It may seem confusing that it says 'select all that apply', and we only pick one answer, but trust the math. I have been on IXL myself, and have seen that even though it says 'select all that apply', there may only be one answer.

Hope this helps you! :)

The angle that is complementary to AFB is BFC

Can someone pls help?

Answers

Answer:

4. Drawing 2 is a scale of Drawing 1

A) is 2.5

B) is 7.8

Step-by-step explanation:

13/5.2=2.5

5.2 x 2.5=13

And since we have the scale factor 2.5

and since it decreases in size we divide

19.5/2.5= 7.8

:D correct

Please help me I'm stuck.

Answers

Each pendant would be $4.03

Answer:

$3.10

Step-by-step explanation:

Since there are three necklaces we multiply $3.80 x 3= $11.40

$20.70 - $11.40= 9.30

9.30/3= 3.10

Please help! I don't understand any of this at all--and I need to provide explanations for all parts!

Answers

Step-by-step explanation:

pi 2 is equal to 360 or a circle, and pi is equal to 180 so if it's between 3&4 make it 3&4 2 sooo

3×3=9 4×4=16 so pi2 is between 9&16

please help ty!!!! :)))......................

Answers

Answer:

16.25

Step-by-step explanation:

each rod is 6.5 and 5 of those are connected togther

meaning the total length of those 5 rods is 6.5 x 5 or 32.5

the problem says that the length of those 5 rods are cut in half and wants to the length of those half-cutted pieces

to do that, simply divide 32.5 (the length of 5 rods) by 2

(or you could multiply 32.5 with 1/2)

and you get 16.25

~lmk if u got Qs

Answer:

16,25

Step-by-step explanation:

6,5*5=35,5

35,5/2=16,25

Write an equation to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term.

–5, –15, –45, ...

Write your answer using decimals and integers.

Answers

Answer:

Step-by-step explanation:

PLs help!!
What is the perimeter, in centimeters, of a rectangle with vertices located at (−17, 12), (8, 12), (−17, −5), and (8, −5)?

42 cm
84 cm
212 cm
425 cm
Thanks to every answer
Brainly to the most reliable answer and right one
Random answer ignored

Answers

Answer:

The perimeter of the rectangle is 84 cm.

Step-by-step explanation:

From X=-17 to X=8 is 25 cm.

From Y=12 to Y=-5 is 17 cm.

Therefore, the equation is 2(25) + 2(17) = 84

The perimeter of the rectangle is 84 cm.

To find the perimeter of the rectangle

We need to find the length and width of the rectangle first, and then use the formula for the perimeter, which is P = 2(l + w).

The length of the rectangle is the distance between the points (-17, 12) and (8, 12), which is 8 - (-17) = 25 units.

The width of the rectangle is the distance between the points (-17, 12) and (-17, -5), which is 12 - (-5) = 17 units.

Using the formula for the perimeter of a rectangle, we have:

P = 2(l + w) = 2(25 + 17) = 84 cm

Therefore, the perimeter of the rectangle is 84 cm.

Learn more about perimeter here : brainly.com/question/397857

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Draw a picture to represent the problem in the example

Answers

Answer:draw a 20 dollar bill then a 18 dollar bill then and equel sign and then a 2 dollar bill

Step-by-step explanation:

4 things of paint total up to $12. The brushes are $6. You will have $20 left after everything

What is an angle that is supplementary to CDH?

Answers

Answer:

[tex]\large\boxed{\tt \angle IDH}[/tex]

Step-by-step explanation:

[tex]\textsf{We are asked to find an angle that is \underline{supplementary} to} \ \tt \angle CDH.[/tex]

[tex]\large\underline{\textsf{What are Supplementary Angles?}}[/tex]

[tex]\textsf{Supplementary Angles are 2 or more angles that form a straight angle, or a 180}^{\circ}[/tex]

[tex]\textsf{angle. We can identify supplements by looking at the line segments that form these}[/tex]

[tex]\textsf{angles, or by the measures of their angles. Note that Supplementary Angles are}[/tex]

[tex]\textsf{also considered as Linear Pairs, where they too also form a straight angle.}[/tex]

[tex]\textsf{*Note that Supplements are Linear Pairs if they share a common "arm"/ line segment.}[/tex]

[tex]\large\underline{\textsf{Identifying the Supplement;}}[/tex]

[tex]\textsf{Remember that we are asked to find the supplement of} \ \tt \angle CDH. \ \textsf{This diagram can be}[/tex]

[tex]\textsf{simpler if we mainly focus on the angles sharing the line} \ \overleftrightarrow{\tt FI}. \ \textsf{We now should have}[/tex]

[tex]\textsf{2 possible angles that are supplements;} \ \tt \angle FCG \ and \ \angle IDH. \ \textsf{As we can likely identify,}[/tex]

[tex]\tt \angle CDH \ \textsf{is an Obtuse Angle as it exceeds the measure of a Right Angle, but still is}[/tex]

[tex]\textsf{less than the measure of a Straight Angle. Because} \ \tt \angle FCJ \ \textsf{isn't related to} \ \tt \angle CDH \ \textsf{in}[/tex]

[tex]\textsf{any way, this means that there is only one option which is} \ \tt \angle IDH. \ \textsf{This angle is}[/tex]

[tex]\textsf{a Supplement and a Linear Pair of} \ \tt \angle CDH \ \textsf{as they both share a common line segment.}[/tex]

[tex]\textsf{Looking at} \ \overrightarrow{\tt CI} \ \textsf{it's also clear that} \ \tt \angle IDH \ \textsf{shares a line with} \ \tt \angle CDH.[/tex]  

[tex]\large\underline{\textsf{Hence;}}[/tex]

[tex]\large\boxed{\tt \angle IDH} \ \textsf{\small is a supplement to} \ \tt \angle CDH.[/tex]

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