It takes 40 minutes for 8 people to paint 4 walls. How many minutes does it take 10 people to paint 7 walls?

QUESTION POSTED AT 10/10/2019 - 07:35 PM

Answered by answersmine AT 10/10/2019 - 07:35 PM

There are 56 minutes for 10 people to paint 7 walls!
Post your answer

Related questions

2. Solve –4(6x + 3) = –12(x + 10).

The answer is 9!! Quadratics

ANSWERED AT 17/10/2019 - 09:25 AM


QUESTION POSTED AT 17/10/2019 - 09:25 AM

Is 500 seconds graeter than less than or equal to 5 minutes

Each minute has 60 seconds, so to find how many minutes 500 seconds are:
1.) Divide 500 by 60
500 ÷ 60 = 8.3
Therefore, 500 seconds is equal to 8.3 minutes.
2.) Compare
5 minutes < 8.3 minutes
8.3 minutes is greater than 5 minutes.

ANSWERED AT 17/10/2019 - 09:20 AM


QUESTION POSTED AT 17/10/2019 - 09:20 AM

The population of cuba is 1.3million The country's population is expected to grow at a rate of 4% each year The population Of Cuba will be in 10 years

The  population in Cuba is expected to grow at a rate of 4% each year . Now is 
1.3million .
This means that after 1 year the population in Cuba would be: 1.3 million+ 4%*1.3million=1.300.000+52.000=1.352.000
After the second year the population would be: 1.352.000  + 4% of 1.352.000=...
After n years the population would be: population in the n-1 th year  + 4% (population in the year n-1)
In 10 years the population in Cuba would be: population in the 9-th year +4% from the population in the 9-th year

ANSWERED AT 17/10/2019 - 09:16 AM


QUESTION POSTED AT 17/10/2019 - 09:16 AM

Find the distance between these points.W(-6, -8), X(6, 8) 20 10 √8

\bf \textit{distance between 2 points}\\ \quad \\&#10;\begin{array}{lllll}&#10;&x_1&y_1&x_2&y_2\\&#10;%  (a,b)&#10;W&({{ -6}}\quad ,&{{ -8}})\quad &#10;%  (c,d)&#10;X&({{ 6}}\quad ,&{{ 8}})&#10;\end{array}\quad &#10;%  distance value&#10;d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}&#10;\\\\\\&#10;d=\sqrt{[6-(-6)]^2+[8-(-8)]^2}\implies d=\sqrt{(6+6)^2+(8+8)^2}

ANSWERED AT 17/10/2019 - 09:15 AM


QUESTION POSTED AT 17/10/2019 - 09:15 AM

A cone has a radius of 40 cm and a volume of 1,875 cm3 . What is the volume of a similar cone with a radius of 16 cm?

The volume of a similar cone would be 750. If you use proportions and put
16/x = 40/1875, you would cross multiply to get 40x=30000. Then, you would solve for x. X is equal to 750.

ANSWERED AT 17/10/2019 - 09:15 AM


QUESTION POSTED AT 17/10/2019 - 09:15 AM

A ticket to the fair initially costs $10. The price is increased by 15%. Then, the price is decreased by 25% (from the already increased price). What is the final price of the ticket?

Increased price = $10 + $10×15% = $11.50

decreased price = $11.50 - $11.5×25% = 8.625

ANSWERED AT 17/10/2019 - 09:14 AM


QUESTION POSTED AT 17/10/2019 - 09:14 AM

Kedar is comparing the costs of phone plans. For phone plan A, the cost is $15.00 to connect and then $0.02 per minute. For phone plan B, the cost is $4.69 to connect and then $0.08 per minute. For what usage does plan A cost the same as plan B

Answer:  After 172 minutes (approx) the usage of plan A is same as the plan B.

Step-by-step explanation:

Here, For phone plan A, the cost is $15.00 to connect and then $0.02 per minute.

And, For phone plan B, the cost is $4.69 to connect and then $0.08 per minute.

Let after x minutes the total usage of plan A is same as plan B.

Therefore, 15.00 + 0.02 x = 4.69 + 0.08 x

15.00 = 4.69 + 0.08 x - 0.02 x

15.00 - 4.69 = 0.06 x

0.06 x = 10.31

x = \frac{10.31}{0.06}

x = 171.833333333\approx 172

Thus, after 172 minutes (approx) the usage of both plan will be same.

ANSWERED AT 17/10/2019 - 09:12 AM


QUESTION POSTED AT 17/10/2019 - 09:12 AM

Please find the volume of each figure . Please show and explain all work or you will be reported do all and not some . 40) A 5m×3m×4m rectangular prism 41) A cube with edge of 6 ft 42) A cylinder with a height of 14 cm and base Diameter of 10 cm 43) A triangular prism with a base area of 15 square inches and height of 12 inches . 44) A cylinder with a base circumference of 8pi and height 7 45) A box has a volume of 24 ft^3 and base of 2 ft by 3 ft, what is the height ?

Volume formulas:
rectangle prism: l×w×h
cube: s^3
cylinder:(pi)r^2×h
triangle prism: (a×b/2)×h
cylinder:(pi)r^2×h
box:l×w×h

40) 5m×3m×4m =15m×4m= 60m^3

41) 6 ft × 6 ft ×6 ft = 36 ft × 6 ft = 216 ft^3

42) d=2r 10/2=5 r=5
3.14×5^2×14=78.5×14= 1099cm^3


43) 15=a×b/2 (area of trianlge)
15×12= 180in^3

44) c=2 (pi)r 8pi=2r (pi)
r=4
3.14×4^2×7=50.24×7=351.68

45) 24 ft^3 =2 ft × 3 ft × height
24=6×h
÷6 both sides
h=4ft

ANSWERED AT 17/10/2019 - 09:06 AM


QUESTION POSTED AT 17/10/2019 - 09:06 AM

For every 2 people that drink Folgers Coffee, 3 people drink Nescafe. How many people drink Folgers Coffee, if 7 people drank Nescafe?

4 people drink Folgers, though the answer to the equation would be 4.66 people drink it.

But let's be honest. if you are cut into two thirds you aren't worried about drinking coffee

ANSWERED AT 17/10/2019 - 09:06 AM


QUESTION POSTED AT 17/10/2019 - 09:06 AM

Freddie is at chess practice waiting on his opponent's next move. He notices that the 4-inch-long minute hand is rotating around the clock and marking off time like degrees on a unit circle. Part 1: How many radians does the minute hand move from 3:35 to 3:55? (Hint: Find the number of degrees per minute first.) Part 2: How far does the tip of the minute hand travel during that time?

Part1

there are 360° in a circle (clock), and thus if we check how many degrees in a clock with 60minutes, then it'd be 360/60, or 6° per minute

now, the clock went from 3:35 to 3:55, 20 minutes, how many degree is that? 6*20

part2

\bf \textit{length of an arc}\\\\&#10;s=\cfrac{r\theta\pi }{180}\qquad &#10;\begin{cases}&#10;r=radius\\&#10;\theta=\textit{angle in degrees}\\&#10;----------\\&#10;r=4\\&#10;\theta=6\cdot 20&#10;\end{cases}\implies s=\cfrac{4\cdot 6\cdot 20\cdot \pi }{180}

ANSWERED AT 17/10/2019 - 09:06 AM


QUESTION POSTED AT 17/10/2019 - 09:06 AM

HELP!!!!!!!!! I WILL GIVE 10 POINTS AND IF ITS REALLY GOOD BRAINLIEST!!

Q1) Amanda's container
Amanda's container: 13.5 x 10 x 10 = 1350
Mary's container: 20 x 8 x 8 = 1280
1350 > 1280 so answer is Amanda

Q2) 70 cm^3
1350 - 1280 = 70

You should not be needing help for these questions because all you need to know how to do is multiplication and subtraction. Please try the questions yourself next time because practice is important for doing your exams fast enough (-_-")

ANSWERED AT 17/10/2019 - 09:04 AM


QUESTION POSTED AT 17/10/2019 - 09:04 AM

How many numbers between 10 and 99 are divisible by 5.

17 because 100 divided by 5 is 20 but you take away 3 because 5, 10, and 100 won't be accepted.

ANSWERED AT 17/10/2019 - 09:02 AM


QUESTION POSTED AT 17/10/2019 - 09:02 AM

A parallelogram with sides of 6 and 10 has an area of 30. Find the measure of the small angle of the parallelogram.

Answer:

45

Step-by-step explanation:


ANSWERED AT 17/10/2019 - 09:02 AM


QUESTION POSTED AT 17/10/2019 - 09:02 AM

A store buys an item for $10 to earn a profit of $25 what percent does the store need to mark up the item

40% u get that by doing 2 fractions 10/25 and x/100 u cross multiply and get 1000 and 25x u divide 1000 by 25 to get 40 which is ur %

ANSWERED AT 17/10/2019 - 09:01 AM


QUESTION POSTED AT 17/10/2019 - 09:01 AM

2. Solve 9 = 1 + 8x – 8. A. x = 2 B. x = 10

A. X=2
Combine like terms 9=-7+8x
Add 7 to both sides 16=8x
Divide 8 from both sides x=2

ANSWERED AT 17/10/2019 - 09:00 AM


QUESTION POSTED AT 17/10/2019 - 09:00 AM

The first painter can finish a paint job in 2 hours. The second painter can finish the same job in 8 hours. How long would it take them to finish the job if they were working together?

6 hours because the painter that took 8 hours which slow the one that takes two hours down

ANSWERED AT 17/10/2019 - 08:59 AM


QUESTION POSTED AT 17/10/2019 - 08:59 AM

What is mBC 40 58 76 96

Answer:

The correct option is C.

Step-by-step explanation:

Given information: ∠A=20° and Arc(DE)=116°.

According to the Angle of Intersecting Secants Theorem:

If two lines intersect outside a circle, then the measure of an angle formed by the two lines is one half the difference of major arc and minor arc.

\text{Angle between two lines}=\frac{1}{2}(\text{Major arc - Minor arc})

\angle A=\frac{1}{2}(Arc(DE)-Arc(BC))

20=\frac{1}{2}(116-Arc(BC))

Multiply both sides by 2.

40=116-Arc(BC)

Arc(BC)=116-40

Arc(BC)=76

The measure of arc BC is 76°. Therefore the correct option is C.

ANSWERED AT 17/10/2019 - 08:59 AM


QUESTION POSTED AT 17/10/2019 - 08:59 AM

What is the interquartile range of the following data set? 60, 40, 35, 45, 39

The first thing we need to do is arrange the numbers from smallest to largest.

35, 39, 40, 45, 60

The interquartile range, or IQR, is IQR=Q_{U}-Q_{L}

Q_{U} is the Upper Quartile
Q_{L} is the Lower Quartile

So we need to find those first.

To identify what the upper and lower quartiles are we need to first find the median of the data set.

35, 39, 40, 45, 60

The median, or middle number, of this data set is 40.

The lower quartile is the median of the numbers LESS THAN the data set median.

35+39=74
74/2=37
Q_{L}=37

The upper quartile is the median of the numbers GREATER THAN the data set median.

45+60=105
105/2=52.5
Q_{U}=52.5

IQR=Q_{U}-Q_{L}
IQR=52.5-37
IQR=15.5

ANSWERED AT 17/10/2019 - 08:56 AM


QUESTION POSTED AT 17/10/2019 - 08:56 AM

Susan can read 72 words in 1/3 of a minute. Which statement is correct?

She can read 216 words per minute, because 72 times 1/3 is equal to 216.

ANSWERED AT 17/10/2019 - 08:54 AM


QUESTION POSTED AT 17/10/2019 - 08:54 AM

Staci has 8 3/8 liters of paint and uses 5 3/4 liters of it. How much paint does Staci have left? Give your answer in simplest form.

We will use subtraction to solve this. We will subtract 5 3/4 from 8 3/8, because we must take away the amount she used. 

8 3/8 - 5 3/4

The easiest way to solve this is to convert to fractions. 

67/8 - 23/4

We must create common denominators to solve this. We will multiply both 23 and 4 from the second fraction by 2 to get to a common denominator of 8. 

67/8 - 46/8 = 21/8

We will then convert this fraction back to a mixed number. 

21/8 = 2 5/8

2 5/8 liters is our final answer

ANSWERED AT 17/10/2019 - 08:52 AM


QUESTION POSTED AT 17/10/2019 - 08:52 AM