Bart can paint one house in 3 hours. ann can paint one house in 5 hours. how long would it take bart & ann to paint one house if they worked together?

Answers

Answer 1

It will take them 4 hours

Related Questions

In circle H, HJ¯¯¯¯¯ is a radius and JK¯¯¯¯¯ is a tangent segment. Which statement must be true?

A) HJ=JK
B) ∠HJK is an obtuse angle.
C) HJ=HK
D) ∠HJK is a right angle.

Answers

ITS RIGHT ANGLE YALL I FOUND IT

The Answer is D.

D) ∠HJK is a right angle.

A bus covered the 400-km distance between points a and b at a certain speed. on the way back the bus traveled at the same speed for 2 hours and then increased the speed by 10 km/hour until it reached a, thus spending 20 fewer minutes on the return trip. how long did the return trip take?

Answers

Let the speed going to B be x, the time taken be t and distance is 400 km
xt=400,
On the way back, the 2x+(x+10)(t-7/3), where it was total time minus 2 hours already driven minus 1/3 of hour, the 20 minutes.
2x+xt-(7/3)x+10t-70/3=400
2x+400-(7/3)x+10t-70/3=400
thus
-(1/3)x+4000/x=70/3
multiplying through by x we get:
-(1/3)x^2-(70/3)x+4000=0
x^2+70x-12000=0
x=(1/2)(-70+/-sqrt52900)
x=80 kmp
thus:
it took 5 hours to make the first trip
on way back 2 hours at 80 kph which means he traveled for 160 km at this speed
2 h 40 min at 90 k/h=90*8/3=240 km

The speed going to B is x, the time t and the distance, 400 km.

xt=400, x kph and t in hours

on the way back, the 2x+(x+10)(t-7/3), where it was total time minus 2 hours already driven minus 1/3 of an hour, the 20 minutes.

2x+xt-(7/3)x+10t-70/3=400

2x+400-(7/3)x+10t-70/3=400, 400 cancels, t=400/x

-(1/3)x+4000/x=70/3

multiply by x

-(1/3)x^2-(70/3)x+4000=0

x^2+70x-12000=0

x=(1/2)(-70+/- sqrt 52900); sqrt term=230

x=80 kph

took 5 hours to go there

on way back 2 hours at 80 kph=160 km

2h40m at 90kph=90*8/3=240 km

They add to 400 km.

The return trip took 4h40m

Use the table to determine the following probabilities. The probability that a randomly chosen person from this group has type B is . The probability that a randomly chosen person from this group has type AB is . The probability that a randomly chosen person from this group has type B or type AB blood is .

Answers

Use the table to determine the following probabilities.

The probability that a randomly chosen person from this group has type B is 3/25

The probability that a randomly chosen person from this group has type AB is 1/25

The probability that a randomly chosen person from this group has type B or type AB blood is 4/25

The probability that a randomly chosen person is:

first person: 3/25

second person: 1/25

third person: 4/25

Probability

Use the table to determine the following probabilities.

The probability that a randomly chosen person from this group has type B is 3/25.

The probability that a randomly chosen person from this group has type AB is 1/25.

The probability that a randomly chosen person from this group has type B or type AB blood is 4/25.

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Is the mean value theorem for integrals the same as the mean value thoerem for derivatives?

Answers

Yes. The two theorems are equivalent statements given that the fundamental theorem of calculus is true.

Answer:

a^2 + b^2 =C^2

Step-by-step explanation:

Cam rode her bike 5 times as far as Dante did. Dante rode 187 meters farther than Michael did. Cam rode 15.25 Kilometers. How many meters did Michael ride? Explain how you know you got your answer

Answers

Let Dante's distant be x, Cam's will be 5x
Given that Cam rode 15.25 km
then
5x=15.25
x=3.05 km

thus Dante rod 3.05 km
but
1 km=1000m
thus
3.05 km=3050 m
But Dante rod 187 m more than Michael, the distance Michael will ride then will be:
3050-187
=2863 m

It was found that Michael rode 2863 meters.

To find out how many meters Michael rode, we first need to establish the relationship between the distances Cam, Dante, and Michael rode. According to the problem, Cam rode 5 times as far as Dante did. If Cam rode 15.25 kilometers, we first convert this to meters by multiplying by 1000 (since there are 1000 meters in a kilometer):

15.25 km × 1000 = 15250 meters.

Now that we know Cam rode 15250 meters and that this is 5 times the distance Dante rode, we can find Dante’s distance:

15250 meters / 5 = 3050 meters.

Dante rode 3050 meters, which is 187 meters farther than Michael did. To find the distance Michael rode, we subtract 187 meters from Dante’s distance:

3050 meters - 187 meters = 2863 meters.

Therefore, Michael rode 2863 meters.

Using the discriminant, how many real number solutions does this equation have? 3x^2 – 2 = 5x

Answers

The discriminant of this equation is 49. The solutions for this equation are x=2 and x=-[tex] \frac{1}{3} [/tex]
I hope that helps.

Simplify i to the power 41

Answers

[tex]\bf \textit{recall that }i^4=1\\\\ -------------------------------\\\\ i^{41}\implies i^{40+1}\implies i^{40}\cdot i^1\implies i^{4\cdot 10}\cdot i\implies (i^4)^{10}\cdot i\implies 1\cdot i\implies i[/tex]

Answer:

It should be just "i"

The function f(x)=35+15x represents the amount of money, in dollars, mr. lewis earns for working x hours. how much money does mr. lewis earn for working 25 hours?

Answers

410.

You can get this by plugging in the 25 for x in the above equation.

Final answer:

By substituting x with 25 in the equation f(x)=35+15x, we find out that Mr. Lewis would earn $410 for working 25 hours.

Explanation:

The function provided is f(x)=35+15x, which represents the amount of money Mr. Lewis earns for working x hours. In the case of Mr. Lewis working for 25 hours, we substitute the value of x with 25 in the equation to calculate his earnings. Therefore, f(25)=35+15(25)=35+375=$410. Hence, Mr. Lewis would earn $410 for working 25 hours.

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Stephanie rdes her bike 2 miles to the post office, and then another 50 yards to the train station. How many yards long was her trip?

Answers

There are 1,760 yards in a mile.

Multiply 1,760 by 2 = 3,520

Add 50 to 3,520 = 3,570

Stephanie's trip was 3,570 yards long.

Find the first six terms of the sequence. a1 = -3, an = 2 ● an-1

Answers

The first term of the sequence is -3.

According to the formula each next term will be obtained by multiplying the previous term by 2.

So, next terms will be:

Second term = 2 x First Term = 2 x (-3) = - 6

Third term = 2 x (-6) = -12

Fourth term = -24

Fifth term = -48

Sixth term = -96

So, the sequence will be:

-3, -6, -12, -24, -48, -96 ...

If you shift the linear parent function, f(x)=x, down 7 units what is the equation of the new function

Answers

To solve this problem you must apply the proccedure shown below:

1- You have that following parent function (the most basic function of the linear functions) given in the problem above:

f(x)=x

2- When you graph this parent function, you obtain the graph shown in the figure attached.

3- If you shift the linear parent function 7 units down, you have the following new function:

f(x)=x-7

4- The graph of the new function is shown in the second figure attached.

The answer is: f(x)=x-7

f(x)=x-7 is indeed the correct answer.just got it right

geometry question!! 50 POINTS

Answers

Volume ratio is 686/250 = 2.74
Area ratio is
250 yd^3
radii? First solid has vol 250 yd^3 = (4/3)*pi*r^3; find r^3 = --------------
(4/3)*pi

Then r^3 = 187.5 yd^3, and r = 5.724 yd

Second solid has vol 686 yd^3 .... Please find the radius R using precisely the same method.

Then calculate the ratio of the surface areas of the 2 solids:

Solid 1 surface area 4*pi* R^2
----------------------------- = --------------- where R is the radius of the larger
Solid 2 surface area 4*pi*r^2 solid and r is the radius of the smaller

R^2
This ratio comes out to ----------
r^2

Scale factor? Obviously one solid is larger than the other. We have to figure out by how much, by comparing volumes. Actually, we've already done that (see above). We could also determine how much larger R is than r. That, too, would give us the scale factor.

Answer:

2.74

Step-by-step explanation:

24 inches is 250% of what length

Answers

24 inches is 250% of 9.6 inches, if that's not one of the options google "250% of (insert one of the options here)

The answer is: " 9.6 inches " .
________________________________________________________
Explanation:
________________________________________________________

24 = 250/100 * x ;

24 = 2.5 x ;

↔ 2.5 x = 24 ;

2.5 x / 2.5 = 24/ 2.5 ;

x = 9.6 ;

The answer is: " 9.6 inches " .
_________________________________________________________

For what value of a does (1/9)^a+1 = 81^a+1 x 27^2-a?

Answers

The answer for a should equal to -3 in the equation given

Solution:
(1/9)^(a+1)=81^(a+1) x 27^(2-a), then the answer would be a=-3.

Answer:

-4

Step-by-step explanation:

Next time use the internet :)

Which number would it be if rounded to the nearest foot

7191.51

A. 7191 FT

OR

B. 7192 FT

Answers

7191.51 ft rounds to 7192 ft. Since the number 7191 is followed by a 5, it rounds up.

On average, Scott drinks ½ of a 6-ounce glass of water in ⅔ hour. How much water does he drink in an hour?
a) 0.75 ounces b) 2 ounces c) 4.5 ounces d) 9 ounces

Answers

1/2 a 6 ounce glass is 3 ounces. He drinks 3 ounces in 2/3 of an hour.

3/2 = 1.5. He drinks 1.5 ounces in one third of an hour. 1.5 * 3 = 4.5

C. 4.5 ounces in one hour

Rewrite 0.85 as a fraction in lowest terms.

Answers

17/20 because it would be 85/100 and 5 goes into 85 17 times and 5 goes into 100 20 times.

simply and shortly put, we "use as many zeros at the bottom as there are decimals and lose the dot", what the dickens does that mean?

well, 0.85 has two decimals, so we use two zeros,00, at the bottom of the fraction and lose the dot, let's do so,

[tex]\bf 0.\underline{85}\implies \cfrac{085}{1\underline{00}}\implies \cfrac{85}{100}\implies \stackrel{simplified}{\cfrac{17}{20}}[/tex]

In the circle below, radius mn = 1.4 m and mlmn = 52°. determine the length of arc ln. round your answer to the nearest tenth and use π = 3.14.

Answers

The arc length is given by:
Arc length=θ/360×π×d
θ=52
d=2×1.4=2.8 m
thus
Arc length will be:
52/360×3.14×2.8
=1.27 m

Answer:

1.27 is the answer

Step-by-step explanation:

students have 40 minuets to complete 50 questions on the aspire ___ test

A) math

B) reading

C) english

D) writing

Answers

I believe the answer to this is C. English.

Answer:

english C)

Step-by-step explanation:

Stan's cookie recipe makes 242424 cookies and calls for exactly 384384384 sprinkles. He is wondering how many sprinkles (p)(p)left parenthesis, p, right parenthesis he will need to make 606060 cookies. He assumes each cookie will have the same number of sprinkles. How many sprinkles does Stan need to make 606060 cookies?

Answers

If these numbers are correct:

For every 242,424 cookies he needs 384,384,384 sprinkles. So how many sprinkles does he need for 606,060 cookies?

242,424/384,384,384 = 606,060/x

384,384,384 * 606,060 = 242,424 * x

232,959,999,767,040 = 242,424 * x

960,960,960 = x

To find the number of sprinkles needed for 60 cookies, determine the number of sprinkles per cookie by dividing 384 by 24, which is 16. Then multiply 16 by 60 to get 960 sprinkles.

The question asks us to calculate the number of sprinkles (p) needed for 60 cookies when a recipe for 24 cookies calls for 384 sprinkles.

To solve this, we start by finding the number of sprinkles per cookie:

Divide the total number of sprinkles (384) by the number of cookies in the recipe (24).Multiply the result by the number of cookies we want to make (60).

Therefore:

384 sprinkles ÷ 24 cookies = 16 sprinkles per cookie 16 sprinkles per cookie × 60 cookies = 960 sprinkles for 60 cookies

Stan would need 960 sprinkles to make 60 cookies.

Plz help!!!! Will mark brainliest!!
Ratios

Ms. Grande brought 24 apples and 18 oranges for a party after a class play. Find the ratio of the number of apples to the total number of fruits Ms. Grande bought.

There are 44 chicken and fish filets altogether in a freezer. There are 12 chicken filets. Which is the ratio of the number of chicken filets to the number of fish filets in the freezer?

There were 12 boys and 18 girls in a class. Then, 3 more boys joined the class and 2 girls left. What is the ratio of the number of boys to the number of girls in the class now?

Monica had $42 and Naomi had $18 at first. Monica then gave $6 to Naomi. What is the ratio of the amount of money Monica has to the amount of money Naomi has in the end?

Answers

1) 6:3
2) 11:3
3) 15:16
4) 3:2

Final answer:

To find the ratio of the number of apples to the total number of fruits, divide the number of apples by the total number of fruits. Simplify the ratio by dividing both numbers by their greatest common factor. For the ratio of chicken filets to fish filets, divide the number of chicken filets by the total number of filets. Simplify the ratio if possible. To find the ratio of boys to girls, determine the new number of boys and girls after some changes. For the ratio of money, calculate the amounts each person has and simplify the ratio.

Explanation:

To find the ratio of the number of apples to the total number of fruits, we divide the number of apples (24) by the total number of fruits (24 apples + 18 oranges = 42). This gives us a ratio of 24:42. We can simplify this ratio by dividing both numbers by their greatest common factor, which is 6. So the simplified ratio is 4:7.

For the second question, we need to find the ratio of the number of chicken filets to the number of fish filets. There are 12 chicken filets and a total of 44 filets in the freezer. So the ratio is 12:44. This can also be simplified by dividing both numbers by 4, giving us a simplified ratio of 3:11.

In the third question, we start with 12 boys and 18 girls. Then, 3 more boys join and 2 girls leave. So the new number of boys is 12 + 3 = 15, and the new number of girls is 18 - 2 = 16. The ratio of boys to girls is therefore 15:16.

In the fourth question, Monica has $42 and Naomi has $18. When Monica gives $6 to Naomi, Monica will have $42 - $6 = $36 left, and Naomi will have $18 + $6 = $24. The ratio of the amount of money Monica has to the amount of money Naomi has is 36:24, which can be simplified to 3:2.

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Which transformation is a rotation?

Answers

maybe the one where the are facing eachother?

Answer:

the answer is c.

Step-by-step explanation:

Write an equation and solve: Twice a number, increased by 3 is 7.

Answers

the equation is 2x+3=7
2x +3=7
-3 -3
2x=4
divide both sides by 2
x=2
the answer is 2

i need help!!!!!!!!!!!!!!?!!!

Answers

In Quadrant I, sin(sin^-1(x)) = x.

The appropriate choice is
B. [tex]\dfrac{\sqrt{3}}{2}[/tex]

PLZ HELP ME!! You will earn 15 POINTS and BRAINLIEST!!!!
What is the average rate of change of the function over the interval x = 0 to x = 6? f(x)=2x−1
____
3x+5

Answers

[tex]\bf slope = m = \cfrac{rise}{run} \implies \cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby \begin{array}{llll} average~rate\\ of~change \end{array}\\\\ -------------------------------\\\\ f(x)=\cfrac{2x-1}{3x+5} \qquad \begin{cases} x_1=0\\ x_2=6 \end{cases}\implies \cfrac{f(6)-f(0)}{6-0}[/tex]

[tex]\bf \cfrac{\left[ \frac{2(6)-1}{3(6)+5} \right]~~-~~\left[ \frac{2(0)-1}{3(0)+5} \right]}{6}\implies \cfrac{\left[ \frac{11}{23}\right]~~-~~\left[-\frac{1}{5} \right]}{6} \\\\\\ \cfrac{\frac{11}{23}+\frac{1}{5}}{6}\implies \cfrac{\quad \frac{78}{115}\quad }{\frac{6}{1}}\implies \cfrac{78}{115}\cdot \cfrac{1}{6}\implies \cfrac{13}{115}[/tex]

Factor each polynomial. Check your answer by distributing. 2x^2+5x+2

Answers

The answer of the factored polynomial is
(X+2)(2x+1)

The center of a circle is at (2, -5) and it's radius is 12. What is the equation of the circle?

A.) (x+2)^2 + (y-5)^2 =24
B.) (x-2)^2 + (y+5)^2 = 24
C.) (x+2)^2 + (y-2)^2 = 144
D.) (x-2)^2 + (y+5)^2 = 144

Answers

The equation for a circle is (x-h)^2 +(y-k)^2=r^2
You just have to plug in your coordinates h is the x and k is the y.
The r is radius squared.
so, (x-2)^2+(y-(-5)^2=144
You have to be careful of those tricky negative values. When you distribute the y-(-5) it turns into y+5.
So your answer is D.

Answer:

The answer is D

Step-by-step explanation:

It is D

What is the surface area of the prism? Include steps.

Answers

First things first. This is a rectangular prism, so it's faces are all rectangles.

Area of a rectangle: Area = Length x Height

- Rectangular Prism Dimensions:

Length: 3m
Width: 4m
Height: 2m

To calculate the surface area of a rectangular prism we first need to realize that he has 3 pairs of equal rectangles.

- The first pair (Photo 1):

Two rectangles with the same measure, so we can say that the area of this pair is: (L x H) x (L x H) or 2 x (L x H).

-> Area (Pair 1) = 2 x (3 x 2) = 2 x 6 = 12m^2

But if we will do the same thing to 3 different pairs, we can describe that:

- Total Surface Area (At):

At = 2 x (L x H) + 2 x (L x H) + 2 x (L x H)

-> At = 2 x ((L x H) + (L x H) + (L x H))

So now, just put the values inside de formula,

- Pair 1: Length = 3m ; Height = 2m

- Pair 2: Length = 4m ; Height = 2m

- Pair 3: Length = 4m ; Height = 3m

*I know that this pair doesn't have a "real Height" but this doesn't change anything when solving, you can consider the 4m as height and the 3m as length or vice versa, the order of the factors doesn't change the product.

-> At = 2 x ((3 x 2) + (4 x 2) + (4 x 3))
-> At = 2 x (6 + 8 + 12)
-> At = 2 x (26)

-> At = 52 m^2

The height of a tree in feet over x years is modeled by the function f(x). f(x)=301+29e−0.5x which statements are true about the growth of the tree? select each correct answer. the tree's maximum height is limited to 30 ft. the tree is initially 2 ft tall. between the 5th and 7th years, the tree grows approximately 7 ft. after growing 15 ft, the tree's rate of growth decreases.

Answers

Final answer:

The tree's maximum height is not limited to 30 ft but approaches 301 ft. Initially, the tree is 30 ft tall, not 2 ft. To verify the growth between the 5th and 7th years, one must calculate f(5) and f(7). The rate of growth indeed decreases over time.

Explanation:

When analyzing the function f(x) = 301 + 29e^{-0.5x} to understand the growth pattern of a tree, it is apparent that some statements about the tree's growth can be identified as true or false.

The tree's maximum height is not limited to 30 ft; instead, the model suggests that the height approaches 301 ft as x increases indefinitely, because the exponential term decreases towards zero.The tree is initially 30 ft tall, not 2 ft tall, since f(0) = 301 + 29 × 1 = 330 ft.Between the 5th and 7th years, the growth can be calculated using f(5) and f(7) to determine if it grows approximately 7 ft during that period.After growing 15 ft, the rate of growth would decrease since the exponential function's growth rate decreases as x increases.

sabendo que x2 + y2=74 e que xy=35, calcule valor de (x - y2)2

Answers

To solve this problem you must apply the proccedure shown below:

1. You have the following information given in the problem above:

- x²+y²=74
xy=35

2. Therefore, you have that (x-y)² is:

=(x-y)²
=x²-2xy+y²
=(x²+y²)-2xy

3. When you substitute the values given in the problem, you obtain:

=74-2(35)
=74-70
=4

4. Therefore, as you can see, the correct answer is: 4

Other Questions

How are elements arranged in the Periodic Table? A. by their properties B. alphabetically C. by how much they are worth D. in the order they were discovered 2. (10 pt) Which is the correct symbol for the element silicon? A. SI B. S C. Si D. Sil 3. (10 pt) All atoms of an element are ________ . A. flammable B. visible under a microscope C. alike D. different 4. (10 pt) Elements that are usually shiny and good conductors of heat and electricity are known as ________________. A. gases B. metals C. solids D. nonmetals 5. (10 pt) The most recent model of an atom is the _______________. A. Bohr model B. Einstein model C. Nucleus model D. Electron Cloud model 6. (10 pt) Elements that are usually dull, brittle, and do not conduct electricity are known as A. gases B. metals C. solids D. nonmetals 7. (10 pt) Elements join together to form A. compounds B. ions C. protons D. atomic masses 8. (10 pt) Which picture best shows an atom? A. B. C. D. 9. (10 pt) In order for a chemical reaction to take place, a certain amount of _______________ must be present. A. heat B. friction C. chemicals D. energy 10. (10 pt) Enzymes are ____________ in the body that speed up chemical reactions. A. catalysts B. cells C. concentrations D. chloroplasts how does a printed line from a woodcut differ from the printed line of an etching?A. The woodcut's line is thicker; the etching's line is finerB. The woodcut's line is jagged; the etching's line is smoothC. The woodcut's line is finer; the etching's line is thinnerD. The woodcut's line is weak; the etching's line is boldThanks! EXTRA POINTSFind an equation, in slope-intercept form, that passes through point (1, 5) with slope 1.Select one:a. y = -x + 1b. y = x + 4c. y = -x + 4d. y = x + 1 el cerebrola ratona de bibliotecael deportistahelp please Who chooses who will be the Speaker of the House in the Georgia General Assembly? A) the Governor Eliminate B) the Georgia Senate C) the voters of Georgia D) the majority party in the House What is a documentary? A. hosted feature presenting entertainment news B. nonfiction film presented through narration and video footage C. conversation between a host and guest D. brief summaries of current events illustrated by video footage\ Can someone help me with these four questions? They're the pictures (including possible answers) This system has one solution. {y=2x+4y {=x2+4x+13 What is the y-coordinate of the solution? Enter your answer in the box. y =[] 13 chocalate bars cost 21 dollars. How many candy bars can you get with 1 dollar? What appears to be the main motivation for the South Carolinas secession? Eva has an important exam coming up for which she feels unprepared.what is the best way for Eva to relieve her stress about the exam a 4.0 kg object is acted upon by a 20 n force to the right and a 25 n force to the left. what is the magnitude of the objects accerlation The speed of a wave is 65 m/sec ifthe wavelength of the wave is 0.8 meters what is the frequency of yhe wave What is the common circumstantial struggle faced by Jim and Della in The Gift of the Magi and Federigo and Monna in Federigos Falcon? write 10 times the value of y three different ways using symbols PLEASE HELP WILL GIVE BRAINLIEST!!!The table below represents the closing prices of stock ABC for the last five days 10 to the 8th power divided by 10 to the -4th power You are acting as an expert witness for the first time. because of your lack of experience, you talked with a complete stranger about details concerning the case. later you realized you were not supposed to do that. should you immediately tell it to your attorney or wait until something turns out bad and then come clean When the relationship between a state agency and an interest group becomes very close, it is referred to as? find the total volume of each figure shown measured in cm (not to scale)