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2 years ago

If 12 boys take 3 days to paint a room,how long will it take 9 boys to complete the same job?

Mathematics

1 answer:

dedylja [7]2 years ago

4 0

Answer: im convinced that this is 4th grade stuff, yet it makes no sense to me

Step-by-step explanation:

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How do I enlarge a shape

Ulleksa [173]

By drawing?

If so, here: first outline the current shape as big as you want it... Then, erase the first shape!

6 0

3 years ago

Find the slope of the line through the given points (1,6),(-8,-9)

cestrela7 [59]

The answer to the question

6 0

3 years ago

What is the mass of a cylinder of lead with a radius of 2 centimeters and a height of 6 centimeters, given that the density of l

ycow [4]

The mass of lead cylinder is: 859.10 grams

Step-by-step explanation:

In order to find the mass of a cylinder we have to find the volume first

Given

Radius = r = 2 cm

Height = h = 6 cm

The volume of cylinder is given by:

$V = \pi r^2h$

Putting the values

$V = 3.14 * (2)^2 * 6\\= 3.14*4*6\\=75.36\ cm^3$

Now,

Density of lead per cm^3 = 11.4g

$Mass\ of\ cylinder = Volume*Density\\= 75.36*11.4\\=859.10\ grams$

The mass of lead cylinder is: 859.10 grams

Keywords: Volume, Density

Learn more about volume at:

#LearnwithBrainly

7 0

3 years ago

State whether each percent of change is a percent increase or a percent decrease. Then find the percent of increase or decrease

Otrada [13]

Percent decrease. 41%
percent change= (new-old)/old *100
= -41 % the negative means decreasing

8 0

3 years ago

What is the slope of the line that passes through the points (-2, -3), and (5, 4)?

Karolina [17]

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ -2}}\quad ,&{{ -3}})\quad 
% (c,d)
&({{ 5}}\quad ,&{{ 4}})
\end{array}
\\\quad \\\\ % slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{4-(-3)}{5-(-2)}\implies \cfrac{4+3}{5+2}$

6 0

3 years ago

Read 2 more answers