Mathematics Middle School

Please give an equation to this word problem...
1. Kim's age is twice that of her sister. When you add Kim's age to her sister's age, you get 36. How old is each sister?

Answers

Answer 1
I think each sister is 12 because 12+ 24= 36

I'm not entirely sure
Answer 2
Its 12, 12+12=24 and 12+24=36, her sister is 12 years of age.

Related Questions

Tom drove 130 Miles at the speed of 65 mph, and then 200 more miles at the speed of 30 mph. What was his average speed for the entire trip?

Answers

47.5 mph- because 30+65 equals 95 and 95 divided by 2 is 47.5

The average speed for the entire trip is 38.06 mph

What is Average Speed?

The total distance traveled divided by the total time spent traveling. This will give you your average speed.

                                            S = d₁ + d₂ ... + dₙ / t₁ + t₂... + tₙ

Given data ,

d₁ = 130 miles

d₂ = 200 miles

S₁ = 65 mph

S₂ = 30 mph

t₁ = d₁ / S₁

t₂ = d₂ / S₂

And , t₁ = 130 / 65 = 2 hours

t₂ = 200 / 30 = 6.67 hours

Therefore , Average Speed = Total distance travelled / Total time taken

                                              =d₁ + d₂ / t₁ + t₂

                                              = 330 / 8.67  mph

                                              = 38.06 mph

                   

Hence , the average speed for the entire trip is 38.06 mph

To learn more about Average Speed click :

https://brainly.com/question/24438797

#SPJ2

The graph shows the cost for cherries and apples.

Which statement is true about the unit costs shown in the graph?

The unit cost for cherries is greater because the slope is greater than the slope for apples.

The unit cost for cherries is greater because the slope is less than the slope for apples.

The unit cost for apples is greater because the slope is greater than the slope for cherries.

The unit cost for apples is greater because the slope is less than the slope for cherries.

Answers

Answer:

The unit cost for cherries is greater because the slope is greater than the slope for apples.

Explanation:

Slope is the rate of change of a line.  The slope of the graph for cherries is greater; we can see this because the line is steeper.

Since the slope is greater, the unit cost is greater.

The statement that represents the unit cost in the graph is that the unit cost for cherries should be more as the slope is more than the slope for apples.

The following information should be considered:

Slope refers to the changing in the rate with respect to the line.Also, the graph slope for cherries should be more as there is a steeper line as compared with the apple one.Also, if the slope is more, so the units cost should be more that means there is a direct relationship between each other

Therefore we can conclude that the first option is correct.

Learn more: brainly.com/question/3605446

A square rug has an area 100 ft2. Write the side length as a square root. Then decide if the side length is a rational number.
The rug has side length______ft.

Answers

13/3 is the answer
it is a rational answer
Final answer:

The side length of the square rug is 10 feet and it is a rational number since it can be written as a ratio of two integers.

Explanation:

The area of a square is computed by squaring the length of one of its sides. The area of the rug is given as 100 square feet. Therefore, we can set up the following equation to find the side length:

S^2 = 100

Where 'S' represents the side length. To solve for 'S', we take the square root of both sides of the equation.

Therefore, S = √100

The square root of 100 is 10, so the side length of the rug is 10 feet.

Therefore, the rug has a side length of 10 ft. Since '10' can be expressed as a ratio of two integers, it is a rational number.

Learn more about Square Roots and Rational Numbers here:

https://brainly.com/question/16549089

#SPJ2

explain why the gcf of two numbers is sometimes 1

Answers

Answer:

The number 1 is common factor between any set of numbers, but, sometimes is the only common factor.

Step-by-step explanation:

This happens when the numbers do not have common prime factors, like 5 and 7.

Since 1 is a prime number, you can consider it the common primer factor of every set of numbers.

Remember:

If 'a' is a number, a prime factor of it would be 1, since a*1=a

Find k such that the equation kx^2+x+25k=0 has a repeated solution.

Answers

ill try to answer your question

Final answer:

The value of k for the equation kx^2 + x + 25k = 0 to have a repeated solution can be found by setting the discriminant to zero. Solving for k, we find that k = 0.1 and k = -0.1 are the values that yield a repeated solution for this quadratic equation.

Explanation:

To find the value of k such that the equation kx^2 + x + 25k = 0 has a repeated solution, we need to use the discriminant of a quadratic equation. The discriminant D is given by D = b^2 - 4ac. For a quadratic equation to have a repeated solution, its discriminant must be zero (D = 0). In this equation, a = k, b = 1, and c = 25k. Plugging these values into the discriminant formula gives us:

D = 1^2 - 4(k)(25k)

Setting D to zero and solving for k will give us the value(s) of k for which the equation has a repeated solution:

0 = 1 - 100k^2

k = ± 0.1

Therefore, there are two values of k that make the original equation have a repeated solution: k = 0.1 and k = -0.1.

A drilling machine can drill 12 holes in 6 minutes. If the machine drills holes at a constant speed, it can drill ______ holes in 25 minutes. Numerical Answers Expected!

Answers

12 holes in 6 minutes.....12/6 = 2 holes per minute

in 25 minutes...
25 * 2 = 50 holes in 25 minutes <==
So it drills 2 holes per minute. 6x4=24. 12x4=48+2=50 

50 holes is your answer.

Order the following numbers from least to greatest: 10 to the 5 power, 10 to the -9 power, 10 to the -17 power, 10 to the 14 power, 10 to the -5 power and 10 to the 30 power

Answers

10 to the -9 power = 0.000000001
10 to the -17 power = 0.0000000000000001
10 to the 5th power =1000000
10 to the -14 power = 100000000000000
10 to the 30 power= 1000000000000000000000000000000
Final answer:

To order the numbers, compare the exponents of 10. The higher the exponent, the greater the number.

Explanation:

To order the numbers from least to greatest, we need to understand the concept of integer powers. In this case, the numbers are in the form of 10 raised to a certain power. We can compare the numbers by looking at the exponent of 10. The higher the exponent, the greater the number.

Here is the ordering from least to greatest:

10 to the -17 power10 to the -9 power10 to the -5 power10 to the 5 power10 to the 14 power10 to the 30 power

Learn more about Ordering numbers here:

https://brainly.com/question/3729546

#SPJ12

What is the greatest common factor of 49 and 84?

Answers

The greatest common factor of 49 and 84 is 7
The answer is 7. I hope this helps love! :)

Sam's credit card balance is less than -$36 does Sam owe more or less than $36?

Answers

He owes more than $36 because -$36 is the same thing as owing $36 but without the - so if his balance is less than $-36 then he owes more than $36
He owes more than $36 dollars because it says that he owes less than -36 and 36 is already 72 dollars more

1.3 puzzle time what happens when a frog double- parks on a lily pad

Answers

The answer is it‘s toad away.

The following are the values of each number:

5 – Infinitely many solutions


7 – 30


3 – 54


11 – 42


2 – no solution


10 – 35


4 - -0.64


8 - -18.4


9 – 3


1 – 12


7 – 72

see attached file for the chart of the values.

Find the values of x and y.

a) x = 20, y = 7
b) x = 10, y = 8
c) x = 50, y = 40
d) x = 10, y = 12

Answers

4x+5x = 90
9x = 90
x = 10

10y + 10 + 5x = 180
10y + 10 +5(10) = 180
10y + 60 = 180
10y = 120
    y = 12

answer
d) x = 10, y = 12
the answer is the letter D, everytime that you see a square between 2 or more angles means that the adition of all the angles is 90

Write your own story problem using mixed numbers that need to be scaled up. The problem should
have at least five mixed numbers that will be scaled up. Be sure to show all your work, explain your
steps in your solution (including changing improper fractions to mixed numbers), and write a complete
answer to your problem. Your answer should include units for the mixed numbers, if needed.

I do not understand the question, I cannot conduct a problem can somebody just give a mixed number problem or whatever and I will calculate it on my own. I am not asking you to do my work just to give me an example of what my teacher wants.

Thanks

Answers

Jack has a cake and another half of a cake, Jill has 2 and 2/3rds cakes, Blake has 3 and 2/3rds of a cake, Peter has 4 and 2/3rds of a cake, and Daniel has 2 and a half cakes. How many cakes do they have in total?

1+1/2+2+2/3+3+2/3+4+2/3+2+1/2 = 6/6 (finding the least common multiple of 1, 2, and 3)+3/6+12/6+4/6+18/6+4/6+12/6+3/6= 90/6=15 cakes

Is this function or non function

Answers

non function I think hope I am helping

what is the slope of the line whose equation is 4y-6x+16=0

Answers

the slope of the line is 3/2

A machine factory produces 2 parts per second. One shift is 10 hours long. What is the production rate in parts per shift? Enter your answer in the box. parts per shift

Answers

2 parts per second so 2 x 60 = 120 parts per minute

120*60 = 7200 parts per hour

7200 x 10 = 72,000 parts per 10 hour shift


72,000 is the answer to your question. Good luck!

you want to model the speed of a motorcycle which unit would be appropriate for measuring the quantity

Answers

Miles per hour if that's the quantity your using

6 men can complete a job in 20 days.if the men work at the same rate.how many more are needed to complete the job in 12 days

Answers

The answer is 5 days. I hope that helped.

Density is equal to mass divided by volume. The mass of a metal is 10.34 g. Its volume is 1.83 ml. Calculate its density. Use the proper number of significant figures.

Answers

Density = 10.34/1.83

Density = 5.65027

Significant figures is based on the lowest digit that was divided, which is to the hundredth unit.

In conclusion, the density is 5.65 g/ml^3

Answer: 5.65 g/ml

Step-by-step explanation:

The density of a substance is given by :-

[tex]\text{Density}=\dfrac{\text{Mass}}{\text{Volume}}[/tex]

Given : The mass of a metal is 10.34 g. Its volume is 1.83 ml.

Then, the density of substance will be :-

[tex]\text{Density}=\dfrac{10.34\ g}{1.83\ ml}\\\\\Rightarrow\ \text{Density}= 5.65027322404\ g/ml[/tex]

Since , the significant figures depend on the dividend .

Here the dividend (10.34) is hundredth unit.

Then, the [tex]\text{Density}== 5.65027322404\approx5.65\ g/ml[/tex]

A pizza bot travels at an average rate of 4 mph it is sent on a delivery toy house 1.5 miles away how long will it take the bot to make the delivery every time back to the restaurant

Answers

In this case, the pizza bot is doing delivery which means it will go to the destination and going back. So, the total distance traveled should be 2x of distance to the delivery target. Then the time needed for the bot to back to the restaurant would be:

Time needed= distance traveled / average velocity= 2*1.5mi / 4mph= 0.75 hour= 45 minutes
Final answer:

The pizza bot will take approximately 22.5 minutes to make the delivery and return to the restaurant.

Explanation:

To calculate the time it will take the pizza bot to make the delivery and return to the restaurant, we can use the formula:

Time = Distance / Speed

In this case, the distance is 1.5 miles (one way), and the speed is 4 mph. So, the time it will take for the pizza bot to make the delivery and return to the restaurant is:


 Time = 1.5 miles / 4 mph
 Time = 0.375 hours

Therefore, it will take the pizza bot approximately 0.375 hours, or 22.5 minutes, to make the delivery and return to the restaurant each time.

Learn more about Calculating time for a delivery here:

https://brainly.com/question/30622764

#SPJ12

Find the value of x. Then the measure of each angle

Answers

The interior angles of a triangle must add to 180 degrees.

110+5x+2x=180
110+7x=180
7x=70
x=10

Then plug in the x value into each angle expression
5(10)=50 degrees
2(10)=20 degrees

Please help with this question! xx

Answers

Step 1 is to find the cost function for any length of wire in inches. Refer to the table and you can see that...
110 inches cost $6.60 so the point (x,y) = (110, 6.60) is on the line
125 inches cost $7.50 so the point (x,y) = (125, 7.50) is on the line

We only need two points form this line. Let's find the slope
m = (y2-y1)/(x2-x1)
m = (7.50-6.60)/(125-110)
m = 0.90/15
m = 0.06

The slope is 0.06 meaning that each additional inch costs $0.06 (6 cents) extra. 
In other words, the cost is 6 cents per inch.

Plug (x,y) = (110, 6.60) and m = 0.06 into the equation below to solve for b. This will get us the fixed cost
y = mx+b
6.60 = 0.06*110+b
6.60 = 6.60+b
6.60-6.60 = 6.60+b-6.60
0 = b
b = 0

So the fixed cost is 0 which makes sense. If you buy 0 inches of wire (i.e. you don't buy anything) then you don't pay anything.

Therefore the cost function is f(x) = 0.06*x which can be written as y = 0.06*x

------------------------------------------------------------------------

We're told that "Emily needs 23 feet of wire" so we need to convert that feet measurement into inches before we can use the function. The reason why is because x is length in inches (not feet).

23 feet = 23 feet * (12 inches/1 foot) = 23*12 = 276 inches
so in short, 23 feet is equivalent to 276 inches

This means x = 276 and y is...
y = 0.06*x
y = 0.06*276
y = 16.56

Emily will spend 16.56 dollars for her wire.

------------------------------------------------------------------------

Andy needs 14 yards. We'll have to convert from yards to feet
14 yards = 14 yards * (3 feet/1 yard) = 14*3 = 42 feet
14 yards = 42 feet

Then convert that feet measurement to inches
42 feet = 42 feet * (12 inches/1 foot) = 42*12 = 504 inches

So overall,
14 yards = 504 inches

Now we can use the function
y = 0.06*x
y = 0.06*504
y = 30.24

Andy will spend 30.24 dollars for his wire.

Side Note: Andy will spend 13.68 dollars extra compared to Emily (since 30.24-16.56 = 13.68). So Andy spends more. Which makes sense given how Andy needs 504 inches of wire compared to Emily's needs of 276 iches of wire. 


Please help ASAP 15 pts
Write the ratio $12 dollars for 3 tickets as a unit rate.

Answers

$12 dollars / 3 tickets = 4 dollars/ticket

or 4 dollars per ticket.
You would divide 3 from $12 leaving 4 so the answer would be 4:1

Is 13/16 rational or irrational

Answers

This is rational because 13/16 can be expressed as a fraction, in fact, it is a fraction, so it;s rational
Final answer:

The number 13/16 is a rational number because it can be expressed as a ratio of two integers.

Explanation:

The number 13/16 is a rational number. A rational number is any number that can be expressed as a ratio of two integers, where the denominator (the number below the division line) is not zero. In this case, the number 13/16 can be expressed as a ratio of two integers: 13 and 16. Therefore, 13/16 is considered to be a rational number, not an irrational number. In contrast, an irrational number cannot be stated as a ratio of two integers. Examples of irrational numbers include the square root of two and pi.

Find out more about Rational and Irrational Numbers by clicking here:

https://brainly.com/question/29194459

#SPJ2

Solve and check x / 6 equals 12 / 9

Answers

x/6 = 12/9

x = 12/9 * 6

x = 8


check:

8/6 = 1.3333

12/9 = 1.3333

rule and missing number what would it be

Answers

the rule is 72 and the missing number is 280
The rule is: MULTIPLY BY 8 because it is true for every term 

13 × 8 =104
22 × 8 = 176
44 × 8 = 352

So, 36 × 8 = 288

what is 6 and 2/3 - 4 and 1/2

Answers

2/3 x 2 = 4/6
1/2 x 3 = 3/6
4/6 - 3/6 = 1/6
6-4 = 2
2 and 1/6
Work: 6 2/3 - 4 1/2
Mix # to improper #
20/3-9/2
Find common denominator
20/3×2/2= 40/6
9/2×3/3=27/6
40/6-26/6= 13/6
Simplify
Answer: 2 1/6
hope that helps :)

Please help me D: I just took 20 points away from me

Answers

For number one please do the following....
you will cut the figure into six shapes. You will have two (4 by 3) squares and four (4 by 1 divided by 2) triangles.
Next, you multiply 4 by 3 and get 12 then multiply again and add both of the area of the two squares. the area for the squares is 24 in total.
finally, you will see that the four half figures left make two full figures. then you can multiply 4 times 1 and get 4 . add 4 plus 4 and get 8. 
the area of the figure as a whole is 24 plus 8 which is 36.

For number two please do the following...
you will multiply the length times the width which in this case is 14 times 32
the area for the parallelogram is 448.

For number three please do the following...
you will do something similar to number one
you can try this by yourself. :)

For number four please do the following....
you will multiply 11 times 20
the area of the big triangle is 220
then all you need to do is find the area of the smaller triangle and add both triangles together. 

Cole said that 555 rounded to the nearest ten is 600. What is Cole's error? explain.

Answers

He rounded it to the nearest hundred, not ten. Ten would be 560.

Hope this helps!

How does the product 110 x n compare to the product 11 x n?

Answers

110 = 11 * 10

So 110*n is  ten times bigger than 11 * n.

What is the rational number equivalent to 3.24 repeating?

A. 3 6/97

B. 3 28/99

C. 3 8/33

D. 3 10/32

Answers

I think that would be the last one

Answer:

C

Step-by-step explanation:

Took the test got it right

Other Questions
Breaking which type of bond would require the most energy? your friend just challenged you to a race. you know in order to beat him, you must run 15 meters within 20 seconds in a northern direction. what does your average velocity need to be to win the race? (2 points) .5 meters per second, north .75 meters per second, north 1.3 meters per second, north 300 meters per second, north why do responsible consumers use credit and credit cards? What is the length of BC?Enter your answer in the box.BC= If vx = 3 meters/second and vy = 4 meters/second, what is the magnitude of the resultant velocity? Rose's stamp collection is 7 less than half of Van's stamp collection, x.Which expression represents the total number of stamps that Rose has? In the case of gibbons v. ogden (1824), the supreme court decided that What is one of the primary functions of this food in the body? Which of the following best describes the events of the Boston Massacre? Boston townspeople attacked and killed five British soldiers. British soldiers attacked and killed five Boston townspeople.British soldiers attacked Boston townspeople, who shot five soldiers dead. Boston townspeople attacked British soldiers, who shot five colonists dead. Select three inner distractions to good listening What are the 4 Main features of the articles of confederation? The british government levied taxes on the colonies in 1760s in order to PLZ HELP ASAP!! I will give brainliest!!!53*(3 1/5-4 1/2)/(2 3/4+1 2/3) Plz give ur answer as a mixed number!!Thanks!!! Plz give the right answer!! Which molecule is usually comprised of six carbons in a ring (with six sides)? Es cierto o falso, que solamente hay un clima en toda La Cordillera de los Andes? List in ch ronologica l order the main events of rowlandson's narrative What is the value of the expression ? Cynthia is conducting research in her neighborhood using questionnaires. Few of her respondents have chosen to keep certain important facts hidden from her. Which important consideration does the data fail to fulfill? validityreliabilityconsistencystability When did the United States become part of the United Nations At age 45, an elephant grows teeth, each weighing 4 kg. About how many pounds do these teeth weigh? Use the conversion factor 1 kg = 2.2046 lbs. Round to the nearest tenth where necessary. Steam Workshop Downloader