Blake can paint a room in 9 hours, Ned can paint the same room in 6 hours, how long to paint the room together

Answers

Answer 1
Work done by Blake = 1/9; Work done by Ned = 1/6; Total work done by both of them together is given by 1/6 +1/6 = 3+2/18 = 5/18; So, the time taken by both of them if they work together is given by: 18/5 =3 3/5 hours.

Related Questions

Difination of occupation​

Answers

Answer:

Occupation -> a job or profession: his prime occupation was as editor.

• a way of spending time: a game of cards is a pretty harmless occupation.

2 the action, state, or period of occupying or being occupied by military force: the Roman occupation of Britain | the Nazi occupation.

• the action of entering and taking control of a building: the workers remained in occupation until October 16.

3 the action or fact of living in or using a building or other place: a property suitable for occupation by older people.

Step-by-step explanation:

hope it helps

Answer:

It is a job or profession

Step-by-step explanation:

If you have an occupation then that means you have a job.

Hope this helps!

If log10 x=-5, what is the value of x?

Answers

Answer:

A

Step-by-step explanation:

[tex]log_{10}x=-5\\10^{-5}=x\\x=\frac{1}{10^5}[/tex]

Distance between -15 and 9

Answers

Answer:

24

Step-by-step explanation:

15+9=24

Answer:

Its easier to do it on a number line but I'm going to give you the straight answer when you count from negatives to positives you go left to right -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1 and then always have the 0 so 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 It would be 25

What is the decimal number 34.576 written in expanded form?

Answers

Answer:

30+4+0.5+0.07+0.006

Step-by-step explanation:

What is the inverse of the function f(x) = x +3?

h(x)=1/3x + 3
h(x)=1/3x - 3
h(x)= x - 3
h(x)= x + 3

Answers

Step-by-step explanation:

the inverse function simply calculate the original x it of a given y. so, we need to transform the original function to calculate x instead of y.

and then, at the end to make it a formally correct function definition, we rename x to y and y to x.

y = x + 3

x = y - 3

=> to make it a formally correct function definition

y = x - 3 = h(x)

What is the domain and range of the function
graphed below?

Answers

A
this is because it is not infinite since there are not arrows and domain is all the possible c values while range is all the possible y values. Therefore when analyzing the graph we can see it starts at x=2 and ends at x=10 which is the domain. we can also see the lowest y value is 1 while the highest is 3 which is the range :)

26
Convert to a mixed number.
3

Answers

Answer:

26/3 as a mixed number is 8 2/3

Step-by-step explanation:

hope this helped you if it did plz mark brainiest

How can you estimaite [tex]\sqrt 40.[/tex]

Answers

9514 1404 393

Answer:

  √40 ≈ 6 4/13 ≈ 6.31

Step-by-step explanation:

The estimate by linear approximation starts with the recognition that ...

  40 = 36 +4 = 6² +4

and the difference from 36 to the next square, 7² = 49 is 49-36 = 13.

The linear approximation to √40 is ...

  √40 ≈ 6 4/13 ≈ 6.31

__

There are various methods for improving this approximation. Perhaps the fastest improvement is obtained using the "Babylonian method." The next iteration is the average of this value and 40 divided by this value.

  (82/13 +40/(82/13))/2 = 6 173/533 ≈ 6.3246 . . . . accurate to 4 decimal places

_____

Additional comment

When you write the value in terms of a square and a remainder:

  n = s² +r

then the above linear approximation of √n can be written as ...

  √n ≈ s +r/(2s+1)

Using the idea that a square root can always be represented by a continued fraction, we can continue the fraction one more iteration to give a slightly better approximation:

  √n ≈ s +r(2s+1)/(2s(2s+1) +r)

For the case at hand, this gives √40 ≈ 6+52/160 = 6 13/40 = 6.325, accurate to 3 decimal places. Additional iterations using the continued fraction idea can be had using ...

  n'' = s + r/(s +n') . . . . . where n' is an approximation of the root and n'' is a better approximation. This does not converge as fast as the Babylonian method, but may be easier to calculate on some calculators.

Find the slope of the tangent line to the given polar curve at the point specified by the value of θ

r = 9 + 8 cos(θ), θ = π/3

Answers

The given curve has equation

r(θ) = 9 + 8 cos(θ)

and its derivative is

dr/dθ = -8 sin(θ)

When θ = π/3, we have r (π/3) = 13, and dr/dθ (π/3) = -4√3.

Differentiate these with respect to θ :

dy/dθ = dr/dθ sin(θ) + r(θ) cos(θ)

dx/dθ = dr/dθ cos(θ) - r(θ) sin(θ)

In polar coordinates, we have

y(θ) = r(θ) sin(θ)

x(θ) = r(θ) cos(θ)

and when θ = π/3, we have y (π/3) = 13√3/2 and x (π/3) = 13/2.

The slope of the tangent line to the curve is dy/dx. By the chain rule,

dy/dx = dy/dθ • dθ/dx = (dy/dθ) / (dx/dθ)

dy/dx = (dr/dθ sin(θ) + r(θ) cos(θ)) / (dr/dθ cos(θ) - r(θ) sin(θ))

When θ = π/3, the slope is

dy/dx = (-4√3 sin(π/3) + 13 cos(π/3)) / (-4√3 cos(π/3) - 13 sin(π/3))

dy/dx = (-4√3 (√3/2) + 13 (1/2)) / (-4√3 (1/2) - 13 (√3/2))

dy/dx = - 1/(17√3)

So, the tangent line has slope -1/(17√3) and passes through (13/2, 13√3/2). Using the point-slope formula, its equation is

y - 13√3/2 = -1/(17√3) (x - 13/2)

y = -(x - 338)/(17√3)

The tape diagram represents the ratio of the time you spend tutoring to the time your friend spends tutoring. You tutor for 3 hours. How many hours does your friend spend tutoring?
You
Friend

Answers

Answer:

15 Hours

Step-by-step explanation:

So you have one block, and your friend has two.

We know that you work for 3 hours, this means that your only block must represent 3 hours.

And all the blocks represent the same amount of time, then each one of the two blocks of your friend also represents 3 hours.

Then in total, he tutored for 3 hours + 3 hours = 6 hours.

 

Therefore, you still have only one block, but now your friend has 5.

Using the same reasoning as above, we can conclude that each block represents 3 hours, and your friend has 5 of them, this means that he tutored for:

5*3 hours = 15 hours

please help this is due in 10 minutes!!!!!!

Answers

Answer:

Step-by-step explanation:

you just gotta add all the side-lengths together and consider each grid square as 10 instead of 1.

so 70 + 40 + 20 + 60 + 20 + 40 i believe.

this all equals 250.

ask your teacher if its a type, because there's no 250 on there. grab a calculator or something as proof.

Help I'm not good at this :))

Answers

Step-by-step explanation:

1 yes it is rational

2 not

3yes

4 not

5 yes

Victor has 2 times as many as trophies as Dean. Together , víctor and Dean have 27 trophies . How many trophies does víctor have?

Answers

Let:
x = Dean
y = Víctor

Since Víctor has 2 times the trophies that Dean has, the amount of trophies Víctor has would be equal to 2x. Therefore,
y = 2x

The amount of trophies they have added together is 27. Therefore,
x + y = 27

We know that y = 2x, so we can substitute y for 2x in the equation x + y = 27. Therefore,
x + 2x = 27

Now solve for x.
x + 2x = 27
3x = 27
3x/3 = 27/3
x = 9
Dean has 9 trophies.

Since Víctor has 2 times the amount Dean has,
Víctor has 18 trophies

4x-5y=6 for y

Solve the equation for the specified variable

Answers

Answer:

[tex]y = - \frac{4}{5} x + \frac{6}{5} [/tex]

Step-by-step explanation:

First subtract 4x on both sides in order to get -5y alone. Now you have -5y = 4x + 6 (since neither 6 nor 4x are like terms). Now divide -5 on both sides in order to get rid of it, so we can get y by its self. Now you have y = -4/5 x + 6/5

Hope this makes sense. Also please tell me if I'm wrong and I'll be happy to look at it again for ya :)

Person 2 worked for 200 minutes and checked 1,325 comments every 5 minutes

Answers

Answer: 33.125

Step-by-step explanation:

So you would do 200 divdied by 5 which is 40 then you would do 1,325 divided by 40 which is the anwser 33.125. If you did it another way let me know.

what's the square of 5

Answers

Answer :

square of 5 is 25 .

25 . Because 5*5= 25

Please help with this due tommorow giving 70 points

Answers

Answer:

As follows,

Step-by-step explanation:

The picture isn't clear but i will try,

ax+b>d

a<0

Then,

1.x>(d-b)/a

xa>d-b

ax+b>d

Which is true, thus x>(d-b)/a is true.

2.x<(d-b)/a

ax<d-b

ax+b<d

Which is false, thus x<(d-b)/a is false.

3.x<d/a-b

x<(d-ab)/a

ax<d-ab

ax+ab<d

Which is not given, thus x<d/a-b is false.

4.x>d/a-b

x>(d-ab)/a

ax>d-ab

ax+ab>d

Which is not given, thus x>d/a-b is false.

How do you get 7:46

Answers

Answer:8:26

Step-by-step explanation:you subtract what time it is by 1:34 then take away 60 for a hour and add it to a hour so taking 60 mins gives you a hour

eight hundred and thirteen ten-thousandths in decimal form

Answers

Answer:

800.10

Step-by-step explanation:

every part after than and is behind a decimal point.

Which table contains points from the inverse of the graphed function?

Answers

The table that you’re looking for would be table B.

Good luck.

The equation of the line is represented in table number 2. Then the correct option is B.

What is a linear equation?

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

From the graph, the y-intercept is 5. Then the equation is given as,

y = mx + 5

From the graph, the equation passes through (-4, -3). Then we have

- 3 = (-4)m + 5

- 8 = - 4m

m = 2

Then the equation is given as,

y = 2x + 5

The equation of the line is represented in table number 2. Then the correct option is B.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ2

Rajan had Rs. 6000 in his bank account on a particular day. A week later he deposited Rs. 1500 and next day, he had to withdraw 1/3 of his total balance. Find his balance amount in he bank after withdrawal.

step by step plzzz ​​

Answers

Answer:

After depositing rs. 1500 ratan got rs. 7500 in his bank account. When he withdrew 1/3 of 7500, he withdrew rs. 2500 from his bank account.. so left amount in bank is 7500-2500= 5000 rupees

Step-by-step explanation:

brainliest

Can you please help :)

Answers

Answer:

6 in.

Step-by-step explanation:

Evaluate.
-18.6
-18.6
-1
Enter your answer in the box.

Answers

Answer:

18.6

Step-by-step explanation:

[tex] \frac{ - 18.6}{ - 1} = 18.6[/tex]

please mark this answer as brainlist

Write an equation of the line that passes through the point (3,3) and is Parallel to the line y=-1/2x+3

Answers

Answer:

[tex]y = - \frac{1}{2} x + \frac{9}{2} [/tex]

Step-by-step explanation:

find the y-intercept

[tex]3 = - \frac{1}{2} (3) + b \\ 3 = - \frac{3}{2} + b \\ \frac{6}{2} + \frac{3}{2} = b \\ b = \frac{9}{2} [/tex]

x : y : z = 2 : 3 : 5 và x-y+3z= -28

Answers

Answer:

2 - 3 + 15 = 14

Step-by-step explanation:

Ice on a lake gets thicker as long as the temperature is below freezing. On a certain lake it took 8 days for the ice to reach a thickness of 3 inches. At what rate was the ice growing over these 8 days in inches per day?

Answers

The average rate of growth of the ice can be found by dividing the thickness by the number of days of growth

The growth rate of the ice over the 8 days is 0.375 inches/day

Reason:

The known information on the ice are;

The time it took the ice to reach a thickness of 3 inches = 8 days

Required:

The (average) rate that the ice is growing in c=inches per day

Solution:

[tex]Rate \ of \ growth \ of \ ice= \dfrac{Increase \ in \ thickness}{ Time} = \dfrac{\Delta \ Thickness}{\Delta T}[/tex]

Therefore;

[tex]Rate \ of \ growth \ of \ ice= \dfrac{3 \ inches}{ 8 \ days} = 0.375 \ inches/day[/tex]

The (average) rate of growth of the ice over the 8 days is 0.375 inches per day

Learn more  here:

https://brainly.com/question/17255666

I have an 20 pound bag of food. If it is 2/3 full right now, how much dog food is in the bag?

Answers

Answer:

2/3multiply by20 u get 13.3 pounds

Given ABCD, solve for x.
B
с
30.5x" (15+10
A
D
O A. 13
O B.9
O c. 11
O D. 7

Answers

Answer:

30.5x" (15+10

A

D

O A. 13

Step-by-step explanation:

10
h
+
6

5
h
+
3

sorry its weird, you can type it out it wont let me put it normally.

Answers

Answer: 5h+9

Step-by-step explanation:

10h + (-5h)

5h+(6(+3))

28. Suppose that the CPI in Year 1 is 150 and the CPI in Year 2 is 200. The rate of
inflation between Year 1 and Year 2 is:
a) 14.28%.
I b) 25%
c) 33.33%
d) 50%

Answers

The rate of inflation between year 1 and year 2, based on the CPI, is  c. 33.33%.

The Consumer Price Index (CPI) allows us to calculate inflation. To find the inflation across these years, use the formula:

= (CPI₂ - CPI₁) / CPI₁ x 100%

Solving gives us:

= (200 - 150) / 150 x 100%

= 33.3%

In conclusion, the inflation is 33.3%.

Find out more at https://brainly.com/question/17329174.

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