Mathematics Middle School

Sarah spends 1/6 hour vacuuming her mom's car. She spends 4 times as long washing the car. Then she spends twice as long waxing the car as she does washing the car. What is the total amount of time Sarah spends vacuuming, washing, and waxing her mom's car?

Answers

Answer 1

your answer will be 2 hours and 10 minutes

mark brainliest




Answer 2

Answer:

2 10

Step-by-step explanation:

210

Related Questions

Solve if you are a genius!

5+3 =158
9+1 =910
8+6 =4814
4+4 =168
Then what’s is 7+3 =????

Answers

5x3=15 then 5+3=8 answer is 158
9x1=9 then 9+1=10 answer is 910
8x6=48 then 8+6=14 answer is 4814
so
7x3=21 then 7+3=10 answer is 2110

The answer is: 7+3 = 2110  

The given question is a typical example of mathematical puzzles. Mathematical puzzles are mathematical problem given to pupils, students for recreational experience and more.

Further Explanation

Mathematical puzzles further enhance the creativity of students, as it deals with their logical reasoning.  

Mathematical puzzles also has do with the practical usage of order of operations i.e. BODMAS (which is an acronym of Bracket, Of, Division, Multiplication, Addition, Subtraction) to derive solutions for existing problems.

It can be observed from the above given mathematical puzzle expression that Multiplication and Addition are in use in that order.

The two figures are multiplied and added together and then placed together to derive a final

5 + 3 = 158

5 x 3 ~ 5 + 3 = 15 ~ 8 = 158

9 + 1 = 910

9 x 1 ~ 9 + 1 = 9 ~ 10 = 910

8 + 6 = 4814

8 x 6 ~ 8 + 6 = 48 ~ 14 = 4814

4 + 4 = 168

4 x 4 ~ 4 + 4 = 16 ~ 8 = 168

Therefore,

7 + 3 = 2110  

7 x 3 ~ 7 + 3 = 21 ~ 10 = 2110

LEARN MORE:

mathematics puzzle https://brainly.com/question/9337345BODMAS rule https://brainly.com/question/2898753

KEYWORDS:

mathematical puzzlebodmasmultiplicationadditiondivision

At a local fitness center, members pay an $8 membership fee and $3 for each aerobics class . Nonmembers pay $4 for each Aerobics class. For what number of aerobics classes will the cost for members & nonmembers be the same?

Answers

This problem is an example of solving equations with variables on both sides. To solve, we must first set up an equation for both members and nonmembers. 

Since members pay $3 for each aerobics class, we can represent this part of the equation as 3c. Members also pay a one time $8 membership fee, so we just add the 8 to the 3c: 

3c + 8

Since nonmembers pay $4 for each aerobics class, we can represent this part of the equation as 4c. They do not have to pay a one time membership fee, so our equation will just be: 

4c

To determine when the cost (c) of the aerobics class will be the same for both members and nonmembers, we set the two equations equal to each other: 

3c + 8 = 4c

Then, we solve for c. First, the variables must be on the same side of the equation. We can do this by subtracting 3c from both sides of the equation: 

8 = 1c. 

Last, we divide both sides by 1. So c = 8. 

This means that the cost of classes will be the same for members and nonmembers at 8 classes. If we want to check our answer, we can plug 8 back into each equation: 

3c + 8 
= 3 ( 8 ) + 8
= 24 + 8
= 32

4c
= 4 ( 8 )
= 32

1/4 inch represents 3 feet. what is the length of a room with an actual length of 24 feet

Answers

2 inches long because 24÷3=8. 8 times .25 equals 2
The length of a room with an actual length of 24ft is 24ft(.25in/3ft)=2in

Factor ax^2−ay−bx^2+cy+by−cx^2

Answers

ax^2−ay−bx^2+cy+by−cx^2
[tex]a\left(x^2-y\right)-bx^2+by+cy-cx^2[/tex]
[tex]a\left(x^2-y\right)+b\left(y-x^2\right)+cy-cx^2[/tex]
[tex]\left(x^2-y\right)\left(a-b\right)+cy-cx^2[/tex]
[tex]\left(x^2-y\right)\left(a-b\right)+c\left(y-x^2\right)[/tex]
[tex]\left(x^2-y\right)\left(a-b-c\right)[/tex]

A suit is on sale for $272 , which is 15% less than the regular price. What is the regular price?

Answers

To find the original price of a discounted object, we must use the following equation...

Original Price = Discounted Price * (Discount % + 1)
Original Price = 272*(1 + 0.15) = $312.80

Therefore, the original price is $312.80

A snail moves 1/40 of a mile in 3/4 of an hour. If the snail continues at this pace, how far, in miles, does it move in one hour?
The answer is .03 or 1/30 but, Idk how to explain my answer.

Answers

1/40 ÷ 3/4 = 1/40 ÷ 4/3 = 4/120 = 1/30

A snail moves 1/40 of a mile in 3/4 of an hour. If the snail continues at this pace, how far, in miles, does it move in one hour?

In [tex] \frac{3}{4} [/tex] hour snail moves [tex] \frac{1}{40} [/tex]miles

[tex] \frac{3}{4} hour = \frac{1}{40} [/tex] miles

Let us multiply by 4 on both sides, so that we can get the distance to be traveled in 1 hour.

So, [tex] \frac{3*4}{4} hour=\frac{1*4}{40} [/tex] miles

[tex] \frac{3*1}{1} hour=\frac{4}{40} [/tex] miles

Now to get distance in 1 hour, Let us divide by 3 on both sides

[tex] \frac{3}{3} hour=\frac{1}{10*3} [/tex] miles

[tex] \frac{1}{1} hour=\frac{1}{30} [/tex] miles

In 1 hour, the snail travels [tex] \frac{1}{30} [/tex]miles

Kerry drove 312 miles on 11 gallons of gas. She had 175 miles left to complete her trip. How many more gallons of gas would she need?

Answers

312/11= 28.36363*175 =6.17 gallons

Rhonda is playing a board game. The players take turns rolling a pair of number cubes. On her next turn Rhonda must roll a 5 to win the game, but if she rolls a double she gets an extra turn.
a. Explain why the events Rolling a 5 and Rolling Doubles are mutually exclusive.

b. If the probability of rolling a 5 is 1/9 and the probability of rolling doubles is 1/6, what is the probability that Rhonda rolls either a 5 or doubles on her next turn. Express your answer as a fraction in simplest form.

Answers

a) We presume "roll a 5" means rolling the dice so they come up with a total of 5 spots on top. 5 is not an even number, so when 5 is showing, the numbers on the two dice must be different, hence cannot be doubles.

b) Since these events are mutually exclusive, we can simply add their probabilities: (1/9) +(1/6) = 2/18 +3/18 = 5/18.

3 is less than y minus 2.

Answers

Y-2-3

To solve it the answer would be
Y-5

Drawing a vowel from letter tiles that spell out MATHEMATICS.

Answers

Well because the question isn’t specified, I can only assume that this is a probability question?
Answer: There are 4 vowels out of the 11 total letters in the word MATHEMATICS. 4/11 is 0.3636... or approximately 36%.
This means that there is a 36% chance of drawing a vowel from the word MATHEMATICS.

Final answer:

Explanation of drawing a vowel from the letters spelling MATHEMATICS focusing on vowels A, E, and I.

Explanation:

Vowels are fundamental in the English language. When drawing a vowel from the letters that spell out MATHEMATICS, we identify the vowels to be A, E, I. Therefore, drawing a vowel from these letters could result in A, E, or I.

Last week, Mr. Thomas rode his bike 49 miles. This week, Mr. Thomas rode his bike 14 miles less than he did last week. Part A. Mr. Thomas rode the same distance each of the 7 days this week. Write an equation to find the number of miles, m, he rode each day. Part B. How many miles did Mr. Thomas ride each day? Part C. Mr. Thomas says his goal is to ride a total of 125 miles by the end of next week. He estimates that he needs to ride about 40 miles next week to meet his goal. Is his estimate reasonable? Explain why or why not.

Answers

Part A
49-14 = 35 
35/7 = 5 

Part B
5 miles each day

Part C
49+35 = 84 
84+40 = 124, which is a good estimate and it is reasonable

There are 448 reams of paper in thw supply room. Fourteen reams are used each day. At that rate, how many days will the supply of paper last?

Answers

x = number of days that have passed

448 = 14x

divide both sides by 14

32 = x
448 divided by 14 is 32 so 32 days

If f(x)=|9-2x|,for which values of x will f(x)<3?

Answers

i think the answer is -4 if you subsitute x for 3

How is the following decimal number read?

28.9


A. Twenty and eight-nine tenths

B. Twenty-eight and nine hundredths

C. Twenty-eight and nine tenths

D. Twenty-eight nine

Answers

Answer:
C) twenty-eight and nine tenths

Explanation:
We have two parts here, the whole number and the decimal part.

1- for the whole number, it is read normally as counting numbers. Therefore, 28 is read as twenty-eight
2- for the decimal part, it is read based on the place-value of the number. We know that the first number after the decimal point is in the tenth position. This means that 0.9 is read as nine tenths

Combining the two, we would conclude that 28.9 is read as twenty-eight and nine tenths

Hope this helps :)

Answer:

C. Twenty-eight and nine tenths.

Step-by-step explanation:  

We have been given a decimal number [tex]28.9[/tex]. We are asked to choose the correct option that represents how to read our given decimal number.

Upon looking at our given decimal number we can see that it has one digit at tenth place that is 9, which represents that our number has 9 tenths.  

The two digits before decimal are 2 (tens place) and 8 (ones place). These digits make 28.

Therefore, the given decimal number could be read as twenty-eight and nine tenths and option C is the correct choice.

Need help ASAP. Please! Thank u☺️

Answers

I would range it from 2 to 30.
This is because the lowest value is 2 and the highest value is 30.
Hope this helps!

PLEASE HELP PLEASEEEEEEEEE

Problem Nell's mom makes chocolate milk with 30mL of chocolate syrup for every 2 ounces of milk. Nell's dad adds 65mL of chocolate syrup for every 5 ounces of milk. Whose chocolate milk is more chocolatey?

a- Nell's Mom
b-Nell's Dad
c- They're both equally chocolately

12 POINTSS

Answers

Nell's mom: 30 mL for 2 ounces = 15 mL for 1 ounce

Nell's dad: 65 mL for 5 ounces = 13 mL for 1 ounce

15 > 13
Therefore, Nell's mom's chocolate milk is more chocolately.

Answer:

(A) Nell's mom

Step-by-step explanation:

It is given that Nell's mom makes chocolate milk with 30mL of chocolate syrup for every 2 ounces of milk.

⇒For 1 ounce of milk, she will make chocolate milk=[tex]\frac{30}{2}=15mL[/tex]

Also, it is given that Nell's dad adds 65mL of chocolate syrup for every 5 ounces of milk.

⇒For 1 ounce of milk, he will make chocolate milk=[tex]\frac{65}{5}=13mL[/tex]

Since, Nell's mom made 15mL of chocolate milk and his dad made 13mL of chocolate milk, thus Nell's mom made chocolate milk more chocolatey.

Hence, option A is correct.

write an equivalent equation that does not contain parentheses for 3(k-x) = -3x-9

Answers

3(k-x)= -3x-9
3k - 3x = -3x - 9 ← equation without parentheses
3k - 3x + 3x = - 9
3k = -9
k = -9/3 
k = -3  ← simplest form

Jesse takes his dog and cat for their annual vet visit.Jesse's dog weighs 23 pounds.The vet tells him his cat's weight is 5/8 as much as his dog's weight.How much does his cat weigh?

Answers

If I’m not mistaken the cats weight is 14.4

Exponents and exponential functions unit test
1. -(10)^-1
A)-1/10
B)-1/-1^10
C)1/10
D)10

Answers

-(10)∧-1= -(0.1)=-0.1
10^-1=0.1

Answer:

A


Step-by-step explanation:

We can change the sign of an exponent if we change sides. This means sign of exponent changes when we move the number (along with base) from numerator to denominator or from denominator to numerator.


So 10 to the power -1 will change to 10 to the power 1 if we take the whole thing to the denominator (steps shown below):

[tex]-(10)^-1\\=-\frac{1}{10^1}\\=-\frac{1}{10}[/tex]


Answer choice A is right.

The cost of attendance at State College is $19,500 for the first year. Devise a periodic savings plan that will allow you to make small deposits for 5 years at a simple interest rate of 1.5% and save enough to pay for the first year at the college.

I only want verified answers
pls dont answer if you dont know or you are not an expert

Answers

simple interest rate for one year = 1.5%
simple interest rate over 5 years = 1.5 x 5 = 7.5%

100% + 7.5% = 107.5%
107.5% = $19500
1% = 181.3953
100% = $18140.50

He needs to put in $18140.50 so that he can get $19,500 at the end of 5 years. 

How can you solve problems involving equivalent expressions?

Answers

I’m pretty sure I️ can help lol
Since you didn’t give he specific questions I️ just do an example.
Say you’re trying to figure out x from 4x+5=2x+33
You basically just move the stuff around until all you have left on one side of the = is x so whatever you do from one side you do to the other.
4x+5=2x+33
-5 -5
4x =2x+28
-2x -2x
2x = 28
/2 /2
x = 14
Hope this is what you were looking for

Answer:

Problems involving equivalent expressions are solved using the rules of algebra. If 2 expressions are equivalent then they are identical in their simplified form.

4 spoons and 3 forks cost $15 4 spoons and 1 fork cost $13 how many do the forks cost?

Answers

Let's say that s=spoons and f=forks. 

According to this, we can say that:

{4s+3f=15
{4s+f=13

This is a system. 

We can then use elimination to solve and isolate the variable:
(4s-3f=15)
- (4s+f=13)

We can then subtract and conclude that:
-4f=2
-f=1/2
f=-1/2

Find (2 × 104) − (3 × 103). A) 1.07 × 103 B) 1.07 × 104 C) 1.7 × 103 D) 1.7 × 104

Answers

[tex]2 \times 10^{4} - 3 \times 10^{3} = 2 \times 10^{4} -0.3 \times 10^{4} = (2.0 -0.3) \times 10^{4} = 1.7 \times 10^{4}[/tex]

Selection D is appropriate.
2 * 104 = 208

3 * 103 = 309 


208 - 309 = -101

Your answer is -101


Hope I helped!

Let me know if you need anything else!

~ Zoe

a projector transforms the image on a computer screen so that it is dilated by a scale factor of 7/2. if the original image in the screen is 10 inches wide, find the new width in inches after it is projected on the wall.

Answers

if i dont fail, i think it should be 35 inches

Answer:35

Step-by-step explanation:

I know the answerr

I have four questions please answer all! With data/evidence

1. A = 0.225 mi2 b= 0.6 mi h= ?

2. A= 4.86 yd2 b= ? H= 1.8 yd

3. A= 63 m2 b= ? H= 12m

4. A= 2.5 km2 b= 5km h= ?

2 means squared, and solve the question marks

Answers

To answer all these questions you will use the formula A= bh. In words this means to find the area you multiply the base times the height. For each of these examples, you are given the area and you have to find the missing dimension. Each of these will be set up as four separate equations that need solved. Here they are 0.225=0.6h, 4.86=1.8b, 63=12b, and 2.5=5h. To solve all four of these and show evidence, you were divided the area by the dimension that you know. 0.225÷0.6, 4.86÷1.8, 63÷12, and 2.5÷5. With any multiplication equation if you know the total, you have to divide to find the missing part. The answers for each of these in order that they are presented our 3.75 miles, 2.7 yards, 5.25 m, and 0.5 km. None of the answers are square units because they are only giving a one dimensional measurement.

Need help on this question 8 only

Answers

i hope this helps! let me know

Use foil to explain how to find the product of (a+b)(a-b). Then describe a shortcut that you could use to get this product without using foil.

Answers

FOIL stands for Front Outter Inner Last

F- multiply the first two terms axa= a^2
O- multiply the two terms on the outside a x -b= -ab
I- multiply the two inner (middle) terms - b x a= ab
L- multiply the last variable in each term= b^2


A shortcut without using FOIL is called the difference of squares and can be rewrote as (a^2-b^2)
Using the FOIL method -
Firsts: a×a= a^2
Outers: a×-b= -ab
Inners: b×a= ab
Lasts: b×-b= -b^2

Combine -
a^2-ab+ab-b^2
= a^2-b^2

This particular pair of binomial brackets with a + and a - in them can be expanded with the difference of two squares:
(a+b)(a-b) = a^2-b^2
This works for binomial brackets with a + and a - in each of them, and where the two terms in each bracket are the sameFor example:
(x+5)(x-5)= x^2-25
So remember,
Difference
Of
Two
Squares,
Abbreviated as D.O.T.S

An author is paid $500 as an advance on their book plus an additional $4 for every book sold. If the author earns $880, how many books has he or she sold?

Answers

x will stand for every extra book sold

880 = 4x + 500
subtract 500 from both sides

380 = 4x
divide both sides by 4

x = 95
they sold 95 books

Scientists believe that there is an extremely massive black hole at the center of the Milky Way. How many times more massive than the Sun would a black hole with a mass of 7.36 x 10^36 kg be? The mass of the Sun is approximately 1.99 x 10^30 kg.

A. 3.7 x 10^8
B. 3.7 x 10^6
C. 3.7 x 10^4
D. 3.7 x 10^3

Answers

I got B 
Hope this helps :D

Final answer:

To find out how many times more massive than the Sun a black hole with a mass of 7.36 x 10³⁶ kg is, divide its mass by the mass of the Sun which is approximately 1.99 x 10³⁰ kg. The answer is 3.7 x 10⁶ times more massive than the Sun.

Explanation:

Scientists believe that there is an extremely massive black hole at the center of the Milky Way. To find out how many times more massive than the Sun a black hole with a mass of 7.36 x 10³⁶ kg is, you can divide its mass by the mass of the Sun. So, 7.36 x 10³⁶ kg / 1.99 x 10³⁰ kg = 3.7 x 10⁶ times more massive than the Sun.

what is 0.7 divided by 792

Answers

0.7/729 equals 0.00088383838
792/ 0.7= 8.8 I think that the answer.
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