One student can paint a wall in 12 minutes. Another student can paint the same wall in 24 minutes. Working together, how long will it take for them to paint the wall?

Answers

Answer 1

Student 1 can paint 1/12 of the wall per minute.
Student 2 can paint 1/24 of the wall per minute.

1/12t+ 1/24t= 1 where t represents time in minutes.
3/24t=1

Divide both sides by 3/24
t=24/3
t=8

Final answer: 8 minutes

Answer 2

Answer: 8

Step-by-step explanation:

Related Questions

how to convert 1500 ml to liters

Answers

Divide 1500 by 1000
1500/1000 = 1.5

Conversion of 1500 mL to liters is 1.5 liters.

To convert 1500 mL to liters, follow the strategy for conversions. You are starting from mL, which is a smaller unit, and want to find out how many liters this is equivalent to, with liters being the larger unit.

Firstly, we know that 1 liter is equivalent to 1000 milliliters. Since we are converting from a smaller unit to a larger unit, you will need to divide the number of mL by 1000. Therefore:

1500 mL / 1000 = 1.5 liters.

You will need to move the decimal point 3 places to the left because there are 3 zeros in 1000. So, the final step to convert 1500 ml to liters is to simply divide 1500 by 1000, which gives us 1.5 liters.

mandy's school has 1300 girls. the ratio of boys to girls is 17:20. How many boys attend mandy's school

Answers

n.o of boys at mandy's school= 1300*(17/20)= 1105 boys

There are 1,105 boys attending Mandy's school.

To calculate the number of boys in Mandy's school, we use the provided ratio of 17:20, which corresponds to the number of boys and girls respectively.

With 20 parts equal to the 1,300 girls enrolled, one part equals 65 girls, and thus there are 17 parts representing boys. Multiplying 17 by 65 gives us 1,105 boys attending the school.

To apply this ratio, we'll perform the following steps:

Determine the total number of parts in the ratio. Since the ratio is 17 boys to 20 girls, 17 + 20 = 37 parts in total.Calculate the value of one part. Since there are 1,300 girls and they are represented by 20 parts one part equals 1,300 girls "/" 20 = 65 girls.Find the number of boys. Since each part represents 65 individuals and there are 17 parts representing boys, the number of boys is 17 * 65 = 1,105 boys.Therefore, there are 1,105 boys attending Mandy's school.

A certain stock gained 5 points in one day and lost 4 points the next day. Which situation has the greater absolute value?Explain

Answers

Im not sure or stock meaning but if it's about banks then if it gets higher that means you toke money from it and at the next day you gave them back a value less what you took

Is the remainder supposed to be this big of a number? Did I mess something up?

Answers

What math is this?...........

Assuming you got a remainder of 176, then you have the correct answer. Nice work. It's perfectly possible to get large values for a remainder.

Side Note: you also have the correct quotient as well

Answer choices:

never

sometimes

not enough information provided to answer the question

always

Answers

The correct answer is Always

P(A and B) means add A and B

if both A and B are both greater then 1/2

then when they are added they will always be greater than 1

Two planes that are initially 800 mi apart are flying directly toward each other. one flies at 250 mph and the other at 150 mph. how long will it be before they meet?

Answers

100mph

Hope i could help and i hope i got it right....

5. A packet of razors and a bar of soap cost £5.50. If the soap costs £2.50 less than the razors, find the cost of each.

Answers

Let the cost of soap be x,
cost of razors = x + 2.5
total cost = 2x + 2.5
2x + 2.5 = 5.5
2x = 3
x = 1.5
cost of razors = 1.5 + 2.5
= 4

The cost of the packet of razors and bar of soap is £4.00 and £1.50 respectively.

R+s=5.5
R-s=2.5
Adding both
2r=8
R=4
S=5.5-4=1.5

Is this a function? If so, write function in function notation. (0,-7), (1,-4), (2,-1), (-1,-10) Is this a function? Yes or No? If yes, write the equation.

Answers

well, for a function, in a set of x,y ordered pairs, so long the "x" are not repeated, then it IS a function, let's look

[tex]\bf \{(\boxed{0},-7), (\boxed{1},-4), (\boxed{2},-1), (\boxed{-1},-10)\}\impliedby \begin{array}{llll} \textit{nope, no x-re} peats\\ \textit{it is indeed a}\\ function \end{array}[/tex]

so then, let's use two of those points ahemm let's see say (0, -7) and (2, -1)

so, what's the equation of a line that goes through (0, -7) and (2, -1)?

[tex]\bf \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({{ 0}}\quad ,&{{ -7}})\quad % (c,d) &({{ 2}}\quad ,&{{ -1}}) \end{array} \\\\\\ % slope = m slope = {{ m}}= \cfrac{rise}{run} \implies \cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{-1-(-7)}{2-0}\implies \cfrac{-1+7}{2-0} \\\\\\ \cfrac{6}{2}\implies 3 \\\\\\ % point-slope intercept \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-(-7)=3(x-0)\implies y+7=3x \\\\\\ y=3x-7[/tex]

The permiter of a triangle is 100 feet. the longest side is 3 feet less than twice the shortest side, and the third side is 7 feet longer than the shortest side. find the lengths of the sides of the triangle

Answers

let the shortest side be 's'
longest side be ' l '
and the third side be ' t'

P = s + l + t
P = 100

l - 3 = 2s
l = 2s + 3--- the longest side is 3 feet less than twice the shortest side

t= 7 + s ---- the third side is 7 feet longer than the shortest side

sub in (2s + 3) for l and (7 + s) for t

P = s + l + t
P = s + 2s + 3 + 7 + s
P = 100
100 = s + 2s + 3 + 7 + s
100 = 4s + 10
4s = 100 - 10
4s = 90
s = 90/4
s = 22.5

P = s + l + t
100 = 22.5 + l + t
100 - 22.5 = l + t
77.5 = l + t

from the previous equation we know l = 2s + 3
we'll plug in l into 77.5 = l + t

77.5 = 2s + 3 + t
we know s = 22.5

77.5 = 2(22.5) + 3 + t
77.5 = 48 + t
t = 77.5 - 48
t = 29.5

l = 2s + 3
l = 2(22.5) + 3
l = 48

the lengths are 22.5, 29.5 and 48

Find the sum of the polynomials below: (7x8 + 3x - 3) + (4x8 + 2x + 5)

Answers

7x^8+3x-3
+4x^8+2x+5
=11x^8+5x+2

Please help!! I'm giving brainliest!!Suppose the number of students who prefer classical music is 64. What would be the relative frequency? Round the answer to two decimal places if needed.
(1 point)
A.0.64 B.0.25
C.0.09
D.0.11

Answers

So first we need to find approximately the number of total students.

Rock I would say is about 200 people. Country, 100, Rap, 255, Classical, 64 as said before, and Blues, 80.

So if we add these all up we can find the total students.

200 + 100 + 255 + 64 + 80

699

Now the relative frequency is how many times something appears in a group.

Classical appears 64 times in about 700 people.

So, 64/700, is closest to the 0.9 selection.

Answer:0.9

Step-by-step explanation:

test

The population of Columbus, Ohio in 2014 was about 823,000. The population of the United States was 319 million in 2014.

About how many times larger was the population of the United States than the population of Columbus, Ohio?

Please show how you got answer.

Answers

387.606318348 times larger because 319 million divided by 823,000 is 387.606318348

State two pairs of angles that are congruent. Justify your answer.

Answers

PNL and VNM; PNM and LNV. THis is because vertical angles are always congruent.

Hope this helps!

Which row in the chart correctly identifies the functions of structures A, B, and C? *
(has to no more than one option)
Row 1
Row 2
Row 3
Row4

Thx so much :)

Answers

Structure A is used for (4) cell communication. The cell membrance has receptros for cell communcation.
Structure B is used to (1) extract energy from nutrients. The mitochondria is the power house of the cell.
Structure C is used for (1) protein synthesis. The golgi apparatus is where protein is created.

Final answer:

The correct row in the chart that identifies the functions of structures A, B, and C is Row 3. In Row 3, A is responsible for photosynthesis, B transports water and nutrients, and C provides structural support.

Explanation:

The correct row in the chart that identifies the functions of structures A, B, and C is Row 3.

In Row 3, A is identified as the structure responsible for photosynthesis, which is the process by which plants convert sunlight into energy. B is identified as the structure that transports water and nutrients from the roots to the rest of the plant, and C is identified as the structure that supports the plant and provides structural stability.

A teacher had $57.72 in his checking account. He made a deposit of $209.54. Then he wrote a check for $72.00 and another check for $27.50. What is the new balance in his checking account?

Answers

167.76 remaining in the account

Why do you think it might be useful to rearrange formulas before solving for one of the variables

Answers

so that you can get a More accurate answer easily

Answer:

It’s easier to find the solution to a variable when that variable is by itself on one side of the equal sign. Rearranging formulas before substituting values for each variable makes calculations more straightforward. With this approach, we only need to perform operations such as multiplication, division, addition, and subtraction on one side of the equal sign, and we simplify instead of solving by using the properties of equality.

Step-by-step explanation:

You have one liter of lemonade concentrate that contains 10% sugar. you pour one fourth of it into a pitcher and you add water to make the final volume one liter, what is the percentage of sugar in the new pitcher?

Answers

Originally:
Total liquid volume = 1 L
Sugar volume = 10% of 1L = 0.1 L

Finally:
Sugar volume = (1/4) of 0.1 L = 0.025 L
Total liquid volume = 1 L
Percentage of sugar = 100*0.025 = 2.5%

Answer: 2.5%

How many different tax brackets are there in the United States currently?A.35 B.6 C.10 D.1

Answers

There are 7 tax brackets.
10% – up to $13,350 
15% – $13,151 to $50,800
25% – $50,801 to $131,200
28% – $131,201 to $212,500
33% – $212,501 to $416,701
35% – $416,701 to $444,500
39.6% – more than $444,500

The most up to date answer is 7, so if I were you I would go with 6. Hope this helps :)

What are the equation(s) used to solve the absolute value equation below: |3x + 2| = 10

Answers

Hello,

if 3x+2>=0 then
|3x+2|=3x+2=10==>3x=10-2==>3x=8==>x=8/3
else
|3x+2|=-(3x+2)=10 ==> -3x-2=10==>-3x=12==>x=-4
end if

What is the square root of 120 rounded to the nearest hundredths?

Answers

sqrt 120 rounded to the nearest hundredth = 10.95

Answer:

The value of the square root of 120 is 10.95

What is square root ?

Square root of the number is the factor that we can multiply by itself to get that number .

If square of a number is equal to another number than we can write

m = n²

And after taking root to both side

√m = √n²

We can cancel the square with root and

√m = n

We know the prime factor of 120

120 = 2x2x2x3x5

So the square root of 120 will be

√(2x2x2x3x5)= 2 √(2x3x5)

= 2 √(30)

And we know the value of √(30) = 5.477

Root of 120 = 2x5.477

= 10.95

Hence , the square root of 120 is 10.95 .

To learn more about finding square root click :

brainly.com/question/46686109

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-4(w+3)+5w what is this answer

Answers

The answer is of your question is
w-12

download photo math it has a X with a red color as the background

Tell which number is prime: 19, 28, 49, 63.

Answers

19 is prime: 19 x 1 = 19
28 is not prime: 7 x 4 = 28
49 is not prime: 7 x 7 = 49
63 is not prime: 3 x 21 = 63

hope this helps

Answer:

The number 19 is the prime number.

Step-by-step explanation:

Consider the provided number.

Prime number: A prime number is a whole number which is greater than 1 and the factors of the number are 1 and itself.

The prime factorization of the provided numbers are:

19 = 1×19

28 = 2×2×7

49 = 7×7

63 =7×9

Here 19 is the only number having factors 1 and 19 which is itself.

Hence, the number 19 is the prime number.

The inequality of the most people that can be seated in the auditorium

Answers

Let x be the number of people that can be seated.

The value of x is some number 0 or greater, such that this number is a whole number (we can't have half a person). This means that [tex]x \ge 0[/tex] which is the same as saying [tex]0 \le x[/tex]

The instructions state that we can seat up to 1200 people. This is the max capacity. We can't go over this amount. So we will also have [tex]x \le 1200[/tex] indicating that x can be less than 1200 or equal to 1200.

So putting the two inequalities together, we get [tex]0 \le x \le 1200[/tex]

Note: if you haven't learned about compound inequalities yet, then the teacher may only want [tex]x \le 1200[/tex] as the answer.

Translate into a numerical expression.

seven less than the product of eleven and the reciprocal of nine.

Answers

(11*9⁻¹)-7. that's it.

Final answer:

To translate the sentence 'seven less than the product of eleven and the reciprocal of nine' into a numerical expression, you would write '11*(1/9) - 7'.

Explanation:

The sentence 'seven less than the product of eleven and the reciprocal of nine' can be translated into a numerical expression as follows:

Firstly, identify the main operations in the sentence. In this case, you have a product (multiplication) and a less than (subtraction) operation. The phrase 'the product of eleven and the reciprocal of nine' will be translated as 11*(1/9), since the reciprocal of nine is one over nine or (1/9).

Next, the 'seven less than' part indicates a subtraction operation. So, the complete numerical expression would be written as '11*(1/9) - 7'.

Learn more about Numerical Expression here:

https://brainly.com/question/21636501

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One number is 6 less than a second number. twice the second number is 9 less than 5 times the first. find the two numbers

Answers

ssssssssssssssssssssssssssssssssss

What is the rule about significant figures when multiplying and dividing measurements?

Answers

report answer to same amount of sig figs and the least # with least figures

ex - 587 x 45 = 26,415 --> 26,000 or 2.6 x 10^4

tom is 4 more than twice andrews age. sara is 8 less than 5 times andrews age. if tom and sara are twins, how old is andrew?

Answers

Tom = t Andrew = a Sara = s t = 2a+4 s = 5a-8 s= t 2a+4 = 5a-8 -3a = -8-4 -3a = -12 a = 4 Andrew is 4 s = 5(4)-8 = 12 So Tom and Sara are 12

My rectangular soccer field site has a length equal to three times its width. find its area in terms of its length x.

Answers

A rectangle with dimensions:

length = a units, and width= b units, has area: [tex]Area=a \cdot b=ab[/tex] (units squared)

In the rectangular soccer field, the length is x units, which may be meters, feet etc.

and the length is 3 times the width, so the width is just one third of the length, that is width= x/3

[tex]Area_{field}=width \cdot length= \frac{x}{3} \cdot x= \frac{ x^{2} }{3} [/tex] square units

Answer: [tex]\frac{ x^{2} }{3} [/tex] square units

A flower bed has the shape of a rectangle 7 yards long and 4 yards wide. what is its area in square feet

Answers

In order to find the area of a rectangle, the width must be multiplied by the length. Since we know the length is 7 yards and the width is 4 yards, we can simply multiply these two values together. 4yd x 7yd= 28yds^2.

what’s 2/5+3/4+1/2 in simplest form

Answers

the exact form is 33/20
the mix number is 1 13/20

Hi!

First, let's find the LCD of the denominators. (5, 4, and 2)

2, 4, 6, 8, 10, 12, 14, 16, 18, 20
4, 8, 12, 16, 20
5, 10, 15, 20

Now we have to change all of the numerators to match the denominators.

Since 5 goes into 20 four times..
2 x 4 = 8
8/20

Since 4 goes into 20 five times...
3 x 5 = 15
15/20

Since 2 goes into 20 ten times...
1 x 10 = 10
10/20

Our new fractions are..
8/20+15/20+10/20=?

Now just add the numerators.
33/20

If you want to simplify it to a mixed number, your answer is 1 13/20
If you want to keep it as a fraction, it's already in simplest form. So the answer is 33/20

Hope this helps! :)

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