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BaLLatris [955]
3 years ago
9

It takes 45 minutes for 4 people to paint 5 walls . How many minutes does it take 6 people to paint 4 walls?

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
7 0
Basically, because of the first part of your question, it takes 9 minutes for one person to paint a quarter of a wall. This means that it would take 36 minutes for one person to paint an entire wall. It also means that it would take 6 minutes for one person to paint 1/6 of a wall.

If there are 4 walls to paint, and 6 people around to paint them, each person would get 4/6 of a wall to paint. This means that it would take 24 minutes for these 6 people, working together, to paint 4 walls. 4 x 6 minutes (because they'd each be painting 4 x 1/6 of a wall) = 24 minutes.
Travka [436]3 years ago
6 0
It takes 45 * 4 = 180 people-minutes to paint 5 walls.
Therefore to paint 4 walls it will take:
\frac{180\times4}{5}=144\ people-minutes
The time needed for 6 people to paint 4 walls is given by 144/6 = 24 minutes.

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How does 17- (-15) compare to 17-0
pentagon [3]
17-(-15)=32
17-0=0
They are not equivalent so they are different.
Also for future reference when you have 2 minus signs they equal a addition sign.
Hope this helps :) GL
4 0
3 years ago
Factorise completely 12 x³y - 18 xy²​
jarptica [38.1K]

Answer:

6xy(2x²-3y)

Step-by-step explanation:

factorized completely

6 0
2 years ago
Y=3/2x+3 <br> y=-3 solve.
laila [671]
Answer : x= -4

This type of problem, you set them equal to each other. And then solve. Don’t forget you can multiply each side by denominator to eliminate the fraction.
Work:

7 0
2 years ago
Write a vector equation of the line that passes through point P(-4,11) and is parallel to a=[-3,8]. Then write parametric equati
Assoli18 [71]

Answer:

\vec l = (-4, 11) + t\cdot (-3,8), x = -4 - 3\cdot t and y = 11 + 8\cdot t

Step-by-step explanation:

The vector equation of the line is:

\vec l = \vec P + t \cdot \vec A

\vec l = (-4, 11) + t\cdot (-3,8)

The parametric equations of the line are:

x = -4 - 3\cdot t and y = 11 + 8\cdot t

4 0
3 years ago
A circular window is drawn on architectural plans where each unit is a foot on a coordinate grid. the window is modeled by the e
Pie

The equation indicates that the center of the window is 12 feet from the ground and the distance the window spans 6 feet.

<h3>What is the general equation of a circle?</h3>

The equation of a circle is given by the formula,

(x-a)^{2} + (y -b)^{2} = r^{2}

where (a,b) is the coordinate of the center of the circle, and r is the radius of the circle.

According to the given equation, if we compare this equation with the general equation of the circle.

(x-4)^{2} + (y-12)^{2} = 9

(x-a)^{2} + (y -b)^{2} = r^{2}

(x-4)^{2} + (y -9)^{2} = 3^{2}

On  observing this equation we will get that the value of (a,b) is (4,12).

Thus, The equation indicates that the center of the window is 12 feet from the ground

window span = diameter of circle

window span = 2r

= 2 × 3 (radius = 3)

= 6

Hence, The equation indicates that the center of the window is 12 feet from the ground and the distance the window spans 6 feet.

To learn more about Equation of the circle from the given link

brainly.com/question/22223658

#SPJ4

6 0
1 year ago
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