Jeff has $20. He spent 1/8 of his money on lunch and 2/5 of his money at the movies. How much money does Jeff have left?

A. $5.50
B. $7.00
C. $8.25
D. $9.50

Answers

Answer 1

Answer:

D. $9.50

Step-by-step explanation:

In total, Jeff spends 21/40 of his money. (1/8+2/5=21/40)

He has 19/40 left.

19/40*20=380/40=9.5

Answer 2

First, let's put 2/5 and 1/8 into similar fractions, in that they have the same denominator.

2/5 = 16/40

1/8 = 5/40

Then, we'll add the fractions together.

16/40 + 5/40 = 21/40

So, Jeff spent 21/40 of his money. We can set up a proportion to find the amount that Jeff spent.

x/20 = 21/40

420 = 40x

x = 10.50

Finally, we'll subtract the amount that Jeff spent from the original amount.

20 - 10.50 = 9.50

Jeff has D. $9.50 left.

Hope this helps!! :)


Related Questions

An author signed copies of her newest book for 57 minutes until the bookstore closed at 5:00 What time did the author begin signing books?
4:03
4:57
5:03
5:57

Answers

Answer:

4:03

Step-by-step explanation:

*WILL MAKE BRAINLIEST*

What is the scale factor of this dilation?

a) 1/5
b) 1/2
c)1
d) 2​

Answers

Answer: 1/2

Step-by-step explanation: The scale factor of the dilation is 1/2 because it's 1/2 of the other triangle. As you can see it used to be 10, but now it's 5.

Have a good day :D

Answer:

From Triangle ABC to Triangle A'B'C', the scale factor is 1/2

b) 1/2

Step-by-step explanation:

Side Length of Line Segment AC is 8 units

Side Length of Line Segment AB is 6 units

Side Length of Line Segment of BC is 10 units

Side Length of Line Segment A'C' is 4 units

Side Length of Line Segment A'B' is 3 units

Side Length of Line Segment B'C' is 5 units

Checking:

A'C'/AC=4/8=1/2 simplified

Hence, the answer is 1/2 as the scale factor for the dilation.

A particular type of Gasoline is suppose to have a mean octane rating greater than 90%. Five measureaments are taken of the octane rating, as follow:

90.1 88.8 89.5 91.0 92.1

Can you conclude that the mean octane rating is great er than 90%?

Answers

Answer:

Yes

Step-by-step explanation:

The mean octane rating will be 90.3

Hope this helps!

Answer:

Yes

Step-by-step explanation:

The mean is just the average, and it's calculated by adding up all the data set numbers and dividing that sum by the number of numbers:

(90.1 + 88.8 + 89.5 + 91.0 + 92.1) / 5 = 451.5 / 5 = 90.3

Our average/mean is 90.3%, which is clearly greater than 90%. So, yes, we can conclude that the mean octane rating is greater than 90%.

Hope this helps!

a family has two cars. the first car has a fuel efficiency of 20 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 725 miles, for a total gas consumption of 40 gallons. how many gallons were consumed by each of the two cars that week?

Answers

Car A consumes 25 gallon and car B consumes 15 gallon.

Step-by-step explanation:

Given,

The fuel efficiency of car A = 20 miles per gallon.

The fuel efficiency of car B = 15 miles per gallon.

In a week, two cars went 725 miles and consumed 40 gallons.

To find the consumption of each car in that week.

Let,

Car A consumed x gallon

Car B consumed y gallon.

According to the problem,

x+y = 40 ----- (1)

20x+15y = 725

or, 4x+3y = 145 -------- (2)

From (1) we get, x = 40-y

Putting the value of x in (2) we get,

4(40-y)+3y = 145

or, 160-4y+3y = 145

or, -y = 145-160

or, y = 15

From (1) we get, x = 40-15 = 25

Hence,

Car A consumes 25 gallon and car B consumes 15 gallon.

Solve using perfect square factoring patterns. y2 + 16y + 64 = 0 {8} {0, –1} {–8} {8, –8}

Answers

Answer:

y^2 + 16y + 64 = 0

(y + 8)(y+8) = 0

y + 8 = 0

y = -8

y + 8 = 0

y = -8

Step-by-step explanation:

WILL MARK BRAINLIEST! help pleaseee
The manager of a local cable company has hired an advertising agency to find out which is the most popular cartoon channel on cable. Which population should the agency sample to get the most reliable information?

Answers

I know I’m two years late, but for those in the future…

~
↓answer choices↓

A.) Cable subscribers.
B.) Employees of the cable company.
C.) Adults listed in the local telephone directory.

D.) Employees of the advertising agency.
~

The correct answer is:
A.) Cable subsricbers.

~

How do I tell if these are natural numbers, whole numbers, integers, or rational numbers? ( Photo for reference)

Answers

This diagram should help find your answer

Step-by-step explanation:

1. divide -12 by -5

you get 2.4 this is a rational number

2. add 3/7 and -3/8 you get a long decimal so it's irrational

Complete the steps to find the area of the trapezoid.
Area of rectangle = v square units
Area of triangle 1 = L M square units
Area of triangle 2 = square units
Area of triangle 3 = square units
Area of trapezoid = square units

Answers

Answer:

256

24

16

96

120

Step-by-step explanation:

The area of the trapezoid is 256, 24, 16, 96, and 120.

What is surface area? The area is the sum of the areas of all its faces.The areas of the base, top, and lateral surfaces i.e all sides of the object. It is measured using different area formulas and measured in square units and then adding all the areas. The area of a solid object is a measure of the total area that the object covers.A Rectangle is a four sided-polygon, having all of the internal angles equal to ninety degrees. the two aspects at every nook or vertex, meet at right angles. the alternative aspects of the rectangle are identical in duration which makes it specific from a rectangular.

Area= Lenght x wide

Perimeter= 2(lenght+wide)

Learn more area here:-https://brainly.com/question/25292087

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PLEASE I REALLY NEED HELP

Answers

Answer:

x=10

Step-by-step explanation:

Triangle MNP is identical to Triangle QRP.

(x+8)÷24=28÷(3x-9)

28x+224=72x-216

44x=440

x=10

The Bar Chart shows the weights of 10 dogs entered in a local dog show,
Which statement is the about this data set?
Can you please help me ?

Answers

is there any picture ?

QT
is the midsegment of the trapezoid PRSU.
If RS=2w+21, QT=4w+27, and PU=w+38, what is the value of w?

Answers

Answer:

w=1

Step-by-step explanation:

QT=(RS+PU)/2

4w+27=(2w+21+w+38)/2

3w+59=2*(4w+27)=8w+54

8w-3w=59-54

5w=5

w=1

Final answer:

After setting up an equation for the average, we calculated that the value of w is 5.

Explanation:

The question involves solving for a variable w in the context of a trapezoid and its midsegment.

We know that a midsegment of a trapezoid is parallel to the bases and its length is the average of the lengths of the two bases.

Given RS=2w+21, QT=4w+27 (midsegment), and PU=w+38, we set up the equation (2w+21 + w+38)/2 = 4w+27, since the length of the midsegment QT is the average of the lengths of the bases RS and PU.

Simplifying this equation:

Add the like terms of the bases: (2w + w) + (21 + 38) = 3w + 59.Divide the sum by 2 to find the average: (3w + 59) / 2.Set this average equal to the midsegment QT: (3w + 59) / 2 = 4w + 27.Multiply each side by 2 to get rid of the fraction: 3w + 59 = 2(4w + 27).Expand the right side of the equation: 3w + 59 = 8w + 54.Subtract 3w from both sides: 59 = 5w + 54.Subtract 54 from both sides to solve for w: w = 5.

Therefore, the value of w is 5.

Given the function f(x)=x^2-4x-1 determine the average rate of change of the function over the interval -4

Answers

Answer:

- 1

Step-by-step explanation:

The average rate of change in the closed interval [ a, b ] is

[tex]\frac{f(b)-f(a)}{b-a}[/tex]

Here [ a, b ] = [4, 7 ], thus

f(b) = f(7) = 7² - 4(7) - 1 = 49 - 28 - 1 = 20

f(a) = f(- 4) = (- 4)² - 4(- 4) - 1 = 16 + 16 - 1 = 31

average rate of change = [tex]\frac{20-31}{7+4}[/tex] = [tex]\frac{-11}{11}[/tex] = - 1

Relative to the circle with the equation x^2 + y^2 = 4 how has the circle with the equation (x+5)^2 + (y-6)^2 = 4 been shifted, what is the radius of the circle

Answers

Answer:

the circle is shifted -5 on the x and +6 on the y. Center is (-5,6). Radius = 2.

Step-by-step explanation:

F—1(-2)
F(-4)
F(f-1(-2))

Answers

Answer:

= -2

Step-by-step explanation:

F(f^-1(x)) = x   so in the case of yur question the -2 is in the place of the x in  the explanation

The value of [tex]f^{-1}[/tex](-2) is -4 , f(-4) is -2 and f[ [tex]f^{-1}[/tex](-2)] is also -2.

What is the inverse of a function?

The inverse of a function is basically a reverse function or undo of the function.

For example y = f(x) then inverse will be x = f(y).

It means in the inverse function we need to interchange x and y.

Another example y = 3x² ⇒ x = √(y/3) will be the inverse.

Given the function,

f(x) = 1/2x and  [tex]f^{-1}[/tex](x)= 2x

Now,

[tex]f^{-1}[/tex](-2) = 2(-2) = -4

f(-4) = 1/2 (-4) = -2

Now,

Operation of f is that it will come x variable down,

So,

f[ [tex]f^{-1}[/tex](-2)] = f(-4)

f(-4) = -2

Hence "The value of [tex]f^{-1}[/tex](-2) is -4 , f(-4) is -2 and f[ [tex]f^{-1}[/tex](-2)] is also -2".

For more information about the inverse of a function,

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The given question is incomplete, complete question is ;

Use f(x) = 1/2x and f-1(x)= 2x to solve the problems. f1(-2) f(-4) f(f-1(-2))

Solve the following systems of 3-variable linear equations.​



50 points

Answers

Answer:

x = 9/25

y = 7/25

z = 4/25

Step-by-step explanation:

2x + y = 1 .......(1)

3y + z = 1 ........(2)

x + 4z = 1 ........(3)

Elimination 1 and 2

2x + y = 1 | ×3 |

3y + z = 1 | ×1 |

6x + 3y = 3

3y + z = 1

___________--

6x - z = 2 .............. (4)

Elimination 3 and 4

x + 4z = 1 | ×6 |

6x - z = 2 | ×1 |

6x + 24z = 6

6x - z = 2

___________--

25z = 4

z = 4/25

Elimination 3 and 4

x + 4z = 1 | ×1 |

6x - z = 2 | ×4 |

x + 4z = 1

24x - 4z = 8

___________+

25x = 9

x = 9/25

Subsitution 1

2x + y = 1

2(9/25) + y = 1

18/25 + y = 1

y = 1 - 18/25

y = 25/25 - 18/25

y = 7/25

Answer:

x = 9/25

y = 7/25

z = 4/25

Step-by-step explanation:

:D

By visual inspection, determine the best-fitting regression
model for the data plot below.

Answers

Given:

Given that the graph of the regression model.

We need to determine the type of the best - fitting regression model.

Model of the graph:

From the graph, it is obvious that the points in the graph does not follows a straight line and thus the graph is not a linear model.

Also, from the graph, we can see that the points in the graph follows a curve pattern.

This curve pattern in the graph indicates that the graph follows an exponential curve.

Therefore, the best - fitting regression model for the given data plot is exponential model.

Hence, Option C is the correct answer.

Monday Night Football has been thrilling fans and topping the television ratings since 1969. As of the 1993 season, the San Francisco 49ers had appeared on Monday Night Football 35 times. The Miami Dolphins had appeared the most times, with 11 more appearances than the 49ers. How many times had the Dolphins appeared?

Answers

Answer:

The answer is 46. 35+11=46

Hope i could help! :D

Step-by-step explanation:

Final answer:

By the 1993 season, the Miami Dolphins had appeared on Monday Night Football 46 times.

Explanation:

To solve this question, we are given that the San Francisco 49ers had appeared on Monday Night Football 35 times by the 1993 season. We are also informed that the Miami Dolphins had made 11 more appearances than the 49ers. Therefore, to find the total number of times that the Miami Dolphins had appeared, we simply need to add 11 to the 49ers' appearances.

So, 35 (49ers' appearances) + 11 (additional Dolphins' appearances) = 46.

This means that by the 1993 season, the Miami Dolphins had appeared on Monday Night Football a total of 46 times.

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Write an algebraic expression to represent the pay (in dollars) for working "x" hours at a rate of eight dollars and seventy-five cents per hour. A) 8.75x B) 875x C) 8.75 x D) 875 x

Answers

From my point of view I think the answer is B)875x

Someone Please help
I’ll give brainliest x

Answers

Answer:

7)

a. a=5

b. b=7

c. y=10

d. z=6

Step-by-step explanation:

hope this helps:)

I want help ,i want an answer
;(

Answers

Answer:

9ft 39in

12×3=36

39-36=3

answer is 12ft 3in

Answer to #11: 12 ft 3 in

Answer to #12: 4 lb 9 oz

Answer to #13: 13 qt 1 pt

Answer to #20: 6 yd 2 ft 3 in

Answer to #21: 8 weeks 2 days 8 hours 44 min

Please give me brainliest, that was super hard

Find the mean, median, and mode of 3, 5, 1, 5, 1, 1, 2, 3, 15.

Answers

Answer:

Mean: 4

Median: 3

Mode: 1

Step-by-step explanation: For the mean, you have to add all the numbers and divide it by the amount of numbers there are to find the average (mean). For the median, you have to order the numbers from least to greatest and since there are 9 numbers and 9 is an odd number, you have to see which number is in the middle, 3 was in the middle for this problem. The mode is which number repeats the most, which was 1.  

Answer:

Mean = 4, Median = 3, Mode = 1

Step-by-step explanation:

The mean is also the average. To find it you add all the numbers up and divide that by the # of numbers given.

[tex]\frac{3+5+1+5+1+1+2+3+1+5}{7} =\frac{28}{7}=4[/tex]

Median is the middle number when all the numbers are written out numerically including the doubles

1 1 1 2 3 3 5 5 15

Mode is the number that appears the most

in this case it is 1

Leonora is factoring a trinomial. The factors of the trinomial are shown on the model.


An algebra tile configuration. 7 tiles are in the Factor 1 spot: 1 is labeled + x and 6 are labeled negative. 3 tiles are in the Factor 2 spot: 1 is labeled + x and 2 are labeled +. 0 tiles are in the Product spot.

Which trinomial did she factor?


A.x2 + 4x – 12

B.x2 + 2x – 6

C.x2 – 8x – 6

D.x2 – 4x – 12

Answers

Answer:

D

Step-by-step explanation: just trust me

The trinomial Leonora factored is x²+2x-6. Therefore, option B is the correct answer.

What are factors of polynomial?

The factors are the polynomials which are multiplied to produce the original polynomial.

From the given figure (see attachment),

Here, x×x+x+x-1-1-1-1-1-1

x²+2x-6

Therefore, option B is the correct answer.

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Will give brainliest!!! Determine the answer to (−5) + 4 and explain.

Answers

Answer:

The answer is -1 because adding onto a negitive number makes the number go towards 0

Step-by-step explanation:

Answer:

-1

Step-by-step explanation:

So, if you have 5 negatives (A) and 4 positives (B) and pair them together:

A B   A B   A B   A B   A

You'll see that you have one extra A or -1 leftover.

So, -5 + 4 = -1

Lucia and Marcus are playing a board game. They roll 2 dice (number cubes) to see who goes first. The person who rolls the highest sum gets to go first. If there is a tie, they each roll the dice again. Lucia went first and she rolled a 4 and a 1. Find the probability that Marcus will not get to go immediately after he rolls the dice. Show all of your work below. Express your answer as a fraction in simplest form, a decimal and a percent

Answers

Answer:

5/18, 0.278, 27.8%

Step-by-step explanation:

In this problem, we basically want to find the probability that Marcus will have a total sum of the 2 dices less than Lucia.

In her throw, Lucia gets a 4 and a 1, so she gets a total sum of 5.

Therefore, we want to find the probability that Marcus will get 5 or less.

The possible combinations that can be obtained when throwing 2 dices are 36 (6 x 6).

Of all these 36 combinations, those that gives a sum of 5 or less are:

1 +1 = 2

1 + 2 = 3

2 + 1 = 3

1 +3 = 4

3 + 1 = 4

1 + 4 = 5

4 + 1 = 5

2 + 2 = 4

2 + 3 = 5

3 + 2 = 5

So, a total of 10 combinations.

Since the probability of an event is:

[tex]p(A)=\frac{s}{n}[/tex]

where

s is the number of successfull outcomes

n is the number of total possible outcomes

Here we have

s = 10

n = 36

Therefore the probability here is

[tex]p=\frac{10}{36}=\frac{5}{18}=0.278 = 27.8\%[/tex]

If a rational exponent represents the cube root of x^m, where m is a positive integer, how does the rational exponent change as m increases?


The rational exponent ______ as m increases.

a. increases

b. decreases

Answers

Answer:

Option B

Increases

Step-by-step explanation:

to solve this problem, let us plug in figures to replace the variables in the equation.

Let y be equals to the rational exponent which represents the cube root of x^m,

The equation is given as y =[tex]\sqrt[3]{x^{m}}[/tex]

let x= 3

and m =, 3, 4, and  5

when m = 3, we have [tex]y =\sqrt[3]{3^{3}} =3[/tex]

when m = 4, we have [tex]y =\sqrt[3]{3^{4}} =4.33[/tex]

when m = 5, we have [tex]y =\sqrt[3]{3^{5}} =6.24[/tex]

As we can see, the values of y are increasing. Hence,  we can say that the value of the rational exponent increases as y increases

Final answer:

As the positive integer m increases in the rational exponent expression for the cube root of [tex]x^m[/tex], the rational exponent itself increases. This is because the base x is being raised to a higher power, exemplified by [tex]x^{2/3[/tex] compared to [tex]x^{3/3[/tex], showing an increase in expression value.

Explanation:

If a rational exponent represents the cube root of [tex]x^m[/tex], where m is a positive integer, the form used to represent this is [tex]x^{m/3[/tex]. As m increases, the value of the expression increases because the base (x) is being raised to a higher power. Therefore, the correct answer to how the rational exponent changes as m increases is it increases.

For example, consider x to equal 8, and compare [tex]x^{2/3[/tex] (the cube root of 8 squared) to [tex]x^{3/3[/tex] (the cube root of 8 cubed).

As m increases from 2 to 3, the exponent changes from 2/3 to 3/3 (or 1), and thus the result of the expression goes from 4 to 8, illustrating that the expression's value increases with m.

The locus of points idea allows you to define geometric objects just by determining whether or not two distances are equal.​

Answers

Answer:

True

Step-by-step explanation:

Final answer:

The statement is True: the locus of points concept is used in geometry to define shapes based on the equality of distances, such as an equidistant curve from a line, or a circle at a fixed distance from a point.

Explanation:

The statement "The locus of points idea allows you to define geometric objects just by determining whether or not two distances are equal" is True. The locus of points is a concept in geometry that represents a set of points that satisfy certain conditions. For instance, the locus of points at a given distance from a straight line is known as an equidistant curve, and when this distance is from a point, it forms a circle. Euclidean geometry often assumes that distances are consistent and measurable, idealizing the real world where we use rules and compasses to define distances and constructs. Concepts like parallelism and measurement systems, as found in axioms, help to build an understanding of geometric relations on lines. Moreover, the validity of geometric propositions can be questioned in real-world applications as geometry serves as an abstraction of physical space.

What does the b value represent? in Exponential Functions

A. Initial amount
B. Rate of growth/decay
C. Independent variable
D. Dependent variable

Answers

The answer is

C



Hope it helped :)

3x+6y=12
x +5y=10
x = 10 – 5y
3(10 – 5y)+6y=12
30–15y+6y=12
30-9y= 12
-9y=-18
y=2

Joey has to solve the system of equations using substitution. He had completed the work shown. What should be his next step

Answers

His work needs to change his work from the beginning, switching the 10 to 9 because 12-3=9

Hannah can type 450
words in 6 minutes.
How many words per
minute can she type?

Answers

Answer:

75

Step-by-step explanation:

That means she type 450/6 minutes. Take 450 and divide it by 6.

450/6 = 75

Select the property that allows m + 0 to be written as m.

commutative - addition
distributive
associative - multiplication
symmetric
commutative - multiplication
associative - addition
identity - addition

Answers

Answer:

identity - addition

Step-by-step explanation:

Properties of Numbers

Addition

Closure:

If a  R and b  R, then a + b is a unique element of R.

Commutative:

a + b = b + a.

Associative:

a + (b + c) = (a + b) + c.

Identity:

a + 0 = a.

Additive Inverse:

a + (-a) = 0.

Answer:

identity - addition

Step-by-step explanation:

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A simple pendulum is made my attaching a rod of negligible mass to a 2.0 kg pendulum bob at the end. It is observed that on Earth, the period of small-angle oscillations is 1.0 second. It is also observed that on Planet X this same pendulum has a period of 1.8 seconds. How much does the pendulum bob weigh on Planet X Lana and Jeff each randomly surveyed 15 students about their favorite types of movies. What would you expect to see in the samples? Select all that apply. A: different members are found in each sampleB: some members may possibly overlap in each sampleC: each sample gave the same responsesD: both samples would be representative of the populationE: both samples include only Lana and Jeff friendsSELECT ALL THAT APPLY What do readers learn about Tom Sawyer from the list of items that the boys give to him in lines 102115? Cite evidence from the text to support your answer. PLEASE HELP. GIVING BRAINLIEST. Kaleb is working on a construction crew in Tucson, Arizona for the summer. While he is happy to have work, he can't seem to get enough to drink. He brings a gallon jug of water with him to work every day and finishes it by noon. How much more water should Kaleb bring with him to the construction site? a. An extra 24-oz. bottle of water b. An extra quart container of water c. An extra half-gallon container of water d. A second gallon container of water About 30% of all fresh water is easily accessible by humans. Where can this water be found? ASAP, due soon Please help! I'll mark you brainliest if it's right! Fill in the blanks! How many representatives did each state have before the first census count? 7 t-shirts cost 67.55. How much do 11 t-shirts cost? 3. When writing a research paper, it ismore important to includefacts , opinions , or anecdotes ? The Drama Club is showing a video of their recent play. The first showing begins at 3:45 p.M. The second showing is scheduled at 6:25 p.M. With a 1 2 hour break between the showings. How long is the video in hours and minutes? Pt. 2 The second showing started 20 minutes late. Will the second showing be over by 8:45 p.M.? If there are 40 centromeres in a cell at anaphase of mitosis, how many chromosomes will be found in each daughter cell following cytokinesis? Suppose there are two independent economic factors, m1 and m2. the risk-free rate is 7%, and all stocks have independent firm-specific components with a standard deviation of 47%. portfolios a and b are both well diversified. portfolio beta on m1 beta on m2 expected return (%) a 1.6 2.2 37 b 2.1 -0.6 15 According to the frame narrative, which pilgrim tells the first tale?A the hostB theknightC the prioressD the scholar What interactions contribute the most to holding the two strands of dna together? What is the value of d? Nosotros no _______ en California.Question 19 options:a) vivimosb) vivenc) vivesd) vive what is the product of -3/8 and -4/12 King uses repetition to emphasize the need toRead the excerpt from Martin Luther King Jr's "I Have aDream" speechBut we refuse to believe that the bank of justice isbankrupt. We refuse to believe that there are insufficientfunds in the great vaults of opportunity of this nation,O have a sense of humor,O take a firm stand.O ask questionsO feel regretand returnSave and ExitNexSubutWhat is the answer What should be substituted in a linear equation in order to solve it Big Bend National Park in Texas is mostly Chihuahuan desert, where rainfall averages about 10 inches per year. Yet, it is not uncommon when hiking in this bone-dry desert to encounter mosses and ferns. One such plant is called "flower of stone." It is not a flowering plant, nor does it produce seeds. Under arid conditions, its leaflike structures curl up. However, when it rains, it unfurls its leaves, which form a bright green rosette on the desert floor. Consequently, it is sometimes called the "resurrection plant." At first glance, it could be a fern, a true moss, or a spike moss. What feature of both true mosses and ferns makes it MOST surprising that they can survive for many generations in dry deserts?A. lack of cuticleB. a gametophyte generation that is dominantC. flagellated spermD. lack of true roots