Mathematics Middle School

Max's bill at a restaurant is $8.67. He uses the following method to figure out a tip of about 15%. Round the amount of the bill to the nearest ten cents. Move the decimal point one place to the left. Then find half of the result. Add the last two answers and round to the nearest five cents. How much will the tip be for the bill? Why does Max's method work?

Answers

Answer 1

x=1.30 is the answer! hope its not too late to help

Related Questions

what is 0.83 ÷ 0.415 show ur work

help me pls

Answers

0.83 ÷ 0.415

Move the decimal point 3 times

830 ÷ 415 = 2

0.83 divided by 0.415=2

Marty plans to make an alien costume for a party.He needs 7/8 yard of fabric and 1 1/2 yards of aluminum foil for the costume.fabric costs $5 per yard. Will the fabric needed to make the costume cost more than $5 or less than $5

Answers

Fabric need will cost 7/8 * 5 = $4.38

Less than $5.

First you do 7/8 * 5 which will get you 4 5/8 or 4.38. The question is asking for less than or greater than. The answer is less than because 4.38 is less than 5.

How Do You Find The Measures Of These Angles ?? (Using The Picture On The Right)

Answers

opposite angles equal each other so if angle 2 is 97, then angle 3 is also 97

6 & 5 need to equal 180 so if 6 = 83, then 5 = 180-83 = 97

Angle 10 = angle 2 = 97

angle 7 = angle 6 = 83

angle 9 = angle 6 = 83

angle 16 = angle 5 = 97

What number needs to be added to both sides of the equation in order to complete the square?
x^2+16x=18

Answers

you have to subtract 18 from both sides

x^2 + 16x = 18

x^2 + 16x (-18) = 18 -18

x^2 + 16x - 18 is your answer :D

Answer: c = 64
In order to find the 'c' value to complete the square, you use the equation c = (b/2)^2. Since 16 = b, c will equal 64. 16/2 = 8, and 8^2 = 64. The final resulting equation will be (x+8)^2 = 82.

A bakery packages 868 muffins into a 31 boxes. The same number of muffins are put into each box. How many muffins are in each box?

(Show work)
Please

Answers

You would need to put 868 muffins equally into 31 boxes. So 868 divide by 31= 28 muffins per box.

the sum of three consecutive number odd integers is 18 less than five times the middle number find the three integers

Answers

1st number = x

2nd number = x+2

3rd number = x+4

x + x+2 +x+4 = 3x+6

3x+6 = 5(x+2)-18

3x+6 = 5x+10-18

3x+6 = 5x-8

3x+14 =5x

14 = 2x

x = 14/2 = 7

1st number = 7

2nd number = 7+2 = 9

3rd number = 7+4 = 11

There are 32 students in the 6th grade at Garden Valley Middle School. Eight of them have freckles. What is the ratio of 6th graders with freckles to the total number of 6th graders?
A. 4:1
B. 1:3
C. 1:4
D. 3:1

Answers

The answer is C.

32 times x = 8

x = 1/4

1/4 = 1:4

help with geometry please

Answers

y=-14
plug in the digits
-8=3/2(4)+y
-8=6+y
-6 -6
-14=y

Hello,

Any line that is perpendicular to another line has a negative reciprocal of the slope. So the negative reciprocal of -2/3 is 3/2. Now with the new slope, let's pt it in the equation to find the slop-intercept equation BY using point-slope form: y-y1 = m (slope) (x-x1).

If I put the numbers in the equation, it would look like: y+8 = 3/2 (x-4). Let's simplify by distributing 3/2 to the parenthesis: y + 8 = 3/2x - 6.

To get "y" by itself, let's subtract 8 from both sides: y = 3/2x - 14.

So, the equation is now y = 3/2x - 14.

In the box you would write, "-14".

I hope this helps!

May

A deposit of $94 positive or negative

Answers

a deposit would be positive because u r putting money back in

postitve. because postitve means yo9ur putting it in and negative would mean your short of something

Cody was going to sell all of his stamp collection to buy a video game. after selling half of them he changed his mind. he then bought seventeen more. how many did he start with if he now has 44?

Answers

Final answer:

Cody started with 54 stamps in his collection. The problem was solved using basic algebra by setting up an equation and working backwards.

Explanation:

The subject of this question is mathematics, specifically dealing with a basic algebra problem that requires working backwards to find the original number of items in a collection. To solve the problem, we can set up an equation to represent the scenario given:

Cody sells half of his stamp collection.After changing his mind, he buys seventeen more stamps.He now has a total of 44 stamps.

Let's call the original number of stamps 'x'. After selling half of them, Cody would have ½x. When he buys seventeen more stamps, the equation to represent this situation is ½x + 17 = 44. To find the value of 'x', we need to subtract 17 from both sides of the equation, which gives us ½x = 44 - 17 or ½x = 27. To find the full value of x, we multiply both sides of the equation by 2, which gives us x = 27 * 2 or x = 54.

Therefore, Cody started with 54 stamps in his collection.

In George’s neighborhood there are 33 cats and 33 dogs roaming free.What percent of the animals roaming free are dogs?

A.35%

B.40%

C.45%

D.50%

Answers

First, we'll figure out how many animals there are in total by adding up the cats and the dogs. In this case, we have 33+33=66 total animals. Then we need to figure out what fraction of these 66 animals are dogs:
[tex]\frac{33}{60}=\frac{1}{2}[/tex]

So half of the animals are dogs. To write that as a percent, we need the fraction to be over 100, so:
[tex]\frac{1}{2}=\frac{50}{100}[/tex]

50% of the animals are dogs.

Estimate the value of 9.9 squared x 1.79

Answers

Final answer:

To estimate the value of 9.9 squared times 1.79, round 9.9 to 10, square it to get 100, and multiply by 1.79 to get an estimate of 179.

Explanation:

The question asks to estimate the value of 9.9 squared times 1.79. To estimate this value, we can round 9.9 to the nearest whole number, which is 10. Then we square 10 to get 100, and multiply this by 1.79.

So, the estimated value would be:

102 × 1.79 = 100 × 1.79 = 179

This estimation approach uses basic arithmetic principles and rounding techniques to simplify the calculation.

Estimate the quotient when 29,376 is divided by 29

Answers

The Quotient would be 1012 so I would just put 1000 if your supposed to estimate.

So to estimate here, I would set 29,376 to 29,000 divided by 29, which would make things a lot easier.

29,000/29 = 1,000

So your estimate is about 1,000.

Analyze the graph.

Which months had rainfall between 10 and 20 inches each?

March, April, and May
May, August, and October
June, July, and September
February, October, and November

Answers

Answer:

C. June, July, September.

Step-by-step explanation:

We have a graph representing the average monthly rainfall.

The graph has plotted the months on the x-axis and the rainfall in inches on y-axis.

We can see that the only months having rainfall between 10 to 20 inches are June, July, September and November.

According to the given options, we get,

The months having rainfall between 10 to 20 inches are June, July and September.

r/5 - 6 = -1

A) r = 1

B) r = 5

C) r = 10

D) r = 25

Answers

r/5 = -1 + 6
r/5 = 5
r = 5 x 5
r = 25

Answer: D).

The answer is D) r= 25 i think

there are 36 students in the class chess club, 40 students in the drama club, and 24 students in the film club . what is the ratio of students in the drama club to students in the film club

Answers

40 to 24
Or
5 to 6
You just put the nomber it says for each thing

5 to 6 would be the correct answer

MATH QUESTION HURRY DOWN BELOW

Answers

dH/dt=-4/5
dH=-4/5dt
H= ∫-4/5dt
H= -4/5t+c
c= 4/5×3= 12/5
so
H=-4/5t+12/5
at first minute i.e T= 1
H= 12/5-4/5
H= 8/5 = 1.6mile

Miss Sandy is fencing in her rectangular backyard, which is 3x23x2 feet wide and 4xy+5x3y24xy+5x3y2 feet long. a.) Find the perimeter of Miss Sandy's yard. Show all work. b.) How much fencing should Miss Sandy purchase? Use mathematics to justify your answer.

Answers

3x23x2= 138 feet wide by 28xy + 10x6y + 2 feet long B) purchase 140 feet X (28xy + 10x6y) fencing

a truck that can carry no more than 6400 lb is being used to transport refrigerators and upright pianos. Each refrigerator weighs 250 lb and each piano weighs 475 lb. Write and graph an inequality to show how many refrigerators and how many pianos that truck could carry . WIll 12 refridgerators and 8 pianos overload the truck? Explain.

Answers

I'm not going to do the entire question, but I'll do the first part.

For the first part, you have to set up an inequality. Use context clues, such as no more than (the one used in this sentence) to figure out what the symbol should be for the inequality.
In this case, because it is NO MORE THAN 6400, it would be:

6400[tex] \leq[/tex]250r + 475p

where r represents the # refrigerators, and p represents the # pianos

Now that you have the equation, make the graph, then for the 3rd part, plug in 12 and 8 to r and p to see if it keeps the inequality true.

Hope this helps! :)

Answer: 250 r+ 475p≤ 6400

12 refrigerators and 8 pianos will overload the truck.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Truck capacity: 6400 (no more than means that the weight of the products must be equal to 6400 lbs or less) Weight of one piano: 475 Weight of one refrigerator: 250

So, the inequality that represents this case is :

250 r+ 475p≤ 6400

Where:

r = number of refrigerators

p = number of pianos

For 12 refrigerators and 8 pianos we simply replace the values:

250 (12) + 475 (8) ≤ 6400

3000+3800≤ 6400

6800≤ 6400

6800 lbs will overload truck. Because 6800lbs exceeds the capacity of the truck.(6400 lb)

Subtract −7n+2 from 2n−1 .

Answers

I believe the answer is 9n-3. I hope this helped you :)

Answer:

Subtracting −7n+2 from 2n−1 is 9n - 3.

Step-by-step explanation:

As the expression given in the question be as follow.

−7n+2 and 2n - 1 .

Subtracted −7n+2 from 2n - 1 .

= 2n - 1 - (-7n + 2)

Open the bracket

= 2n - 1 + 7n - 2

Simplify the above

= 9n - 3

Therefore Subtracting −7n+2 from 2n−1 is 9n - 3.

Kendra is twice as old as Tim. In 10 years, Kendra will be four years older than Tim. How old are Kendra and Tim now?

Answers

kendra is 8 now, tim is 4

Answer: kendra is 8 now, tim is 4

5. Which number is a perfect cube?
7
25
66
27

Answers

The answer is 27 because the cubed root is 3

The answer is 27 your welcome

Explain how you can solve 8x8 if you know how to multiply with 4 but not how to multiply with 8

Answers

You can add 8, eight times

what is (24^3)^-3 × (40÷4+14)^10 over (fraction bar) (96÷8)+(39÷3-1) ??????

Answers

The answer is: " 1 " .
________________________________
Note:
_______________________________________________
(40 ÷ 4 + 14) ¹⁰ = [ (40 ÷4) + 14 ] ¹⁰ = (10 + 14)¹⁰ = 24¹° ;

(96 ÷ 8) + (39 ÷ 3 −1 ) = (96 ÷ 8) + [ (39 ÷ 3) − 1 ] ;

= 12 + (13 − 1 ) = 12 + 12 = 24 ;
________________________________________________
(24³)⁻³ = 24⁽³ * ⁻³⁾ = 24⁻⁹ ;

___________________________________________
So we can rewrite the problem:
___________________________________________
24⁻⁹ * (24¹⁰ / 24) ;
___________________________________________
Note: " (24¹⁰ / 24) = (24¹⁰ / 24¹) = 24 ⁽¹⁰ ⁻ ¹⁾ = 24 ⁹ ;
___________________________________________
Rewrite the expression:
___________________________________________
24⁻⁹ * 24 ⁹ = 24 ⁽⁻⁹ ⁺ ⁹⁾ = 24⁰ = 1 .
___________________________________________
The answer is: " 1 " .
___________________________________________

This scatter plot shows the association between the amount of fat and the total amount of calories in a few food items. What is the calorie content of foods that contain 14 grams of fat?
A. about 100 calories
B. about 300
C. about 340
D. about 410
E. about 530

Answers

Answer:

Answer is C

Step-by-step explanation:

The calorie content of foods that contain 14 grams of fat is about 410.

What is Scatter plot?

A set of dots plotted on a horizontal and vertical axis is known as a scatter plot. Since they can demonstrate the degree of connection, if any, between the values of observed quantities or events, scatter plots are crucial in statistics (called variables).

A scatter plot is made up of a vertical axis that represents the measurements of the other variable and a horizontal axis that contains the measured values of the independent variable (dependent variable).

We have,

A scatter plot shows the association between the amount of fat and the total amount of calories in a few food items.

From the scatter plot, for 14 grams of fat the calories lies in between 300 and 400.

So, we can conclude from the scatter plot is 340.

Learn more about Scatter plot here:

https://brainly.com/question/29231735

#SPJ7

Simplify.

42+25

A.21

B.29

C.41

D.51

Answers

Im actually pretty sure its C because 4 to the power of 2 is 16 and then add those too up 16+25=41

Answer:

The answer is C. 41

Step-by-step explanation:

So i did the test. and got it right!

Heh...-

20 points
please help

in return brainliest and special thanks

Answers

The answer is B (2,4)

What’s the unit rate for 3 2/3 feet per 11/60 hour?

Answers

11/3 divides by 60/11 = 660/33 = 20

Answer:

20 feet per hour

Step-by-step explanation:

To find the unit rate of the given scenario

[tex]3\frac{2}{3} \text{ feet per }\frac{11}{60} \text{hour}[/tex]

Unit rate: The given rate per unit time.

So, divide the feet by time

Unit rate [tex]=\dfrac{11}{3}\div \dfrac{11}{60}[/tex]

[tex]=\dfrac{11}{3}\times \dfrac{60}{11}[/tex]

[tex]=20\text{ feet/hour}[/tex]

Unit rate is 20 feet per unit time.

Hence, The unit rate is 20 ft/h

what is The density of an object is the quotient of its mass and its volume as a formula?

Answers

Density=Mass/Volume=M/V

Mrs. Gomez is a mother to 2 boys. The number of children she has is three times the number of boys she has. Her children are planning to buy her a bouquet of flowers. What is the biggest bouquet they can buy in which the ratio of pink flowers to blue flowers matches the ratio of girls to boys if the florist has 9 blue carnations and 12 pink carnations left?

Answers

There are 6 children total, 4 of which are girls. The ratio is 2:1 girls:boys, so there will need to be twice as many pinks as there are blues. If we get 12 pinks, then there will be 6 blues. That's the biggest since that's all the pinks the florist has.

Answer:

it is d for the people on edge

Step-by-step explanation:

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