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Readme [11.4K]
2 years ago
5

Wayne is going to paint the side of the house shown in the diagram. What is the area that will be painted? Please explain how u

found your answer

Mathematics
1 answer:
goblinko [34]2 years ago
3 0
First find the area of the rectangle  by multiplying the length and width of the rectangle, so 12 x25=300. Then find the area of the triangle, which is length x height/ 2. So 8 x 25=200/2=100. Then add the two answers together to get 400.
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Evaluate the given integral by changing to polar coordinates. 8xy dA D , where D is the disk with center the origin and radius 9
BabaBlast [244]

Answer:

0

Step-by-step explanation:

∫∫8xydA

converting to polar coordinates, x = rcosθ and y = rsinθ and dA = rdrdθ.

So,

∫∫8xydA = ∫∫8(rcosθ)(rsinθ)rdrdθ = ∫∫8r²(cosθsinθ)rdrdθ = ∫∫8r³(cosθsinθ)drdθ

So we integrate r from 0 to 9 and θ from 0 to 2π.

∫∫8r³(cosθsinθ)drdθ = 8∫[∫r³dr](cosθsinθ)dθ

= 8∫[r⁴/4]₀⁹(cosθsinθ)dθ

= 8∫[9⁴/4 - 0⁴/4](cosθsinθ)dθ

= 8[6561/4]∫(cosθsinθ)dθ

= 13122∫(cosθsinθ)dθ

Since sin2θ = 2sinθcosθ, sinθcosθ = (sin2θ)/2

Substituting this we have

13122∫(cosθsinθ)dθ = 13122∫(1/2)(sin2θ)dθ

= 13122/2[-cos2θ]/2 from 0 to 2π

13122/2[-cos2θ]/2 = 13122/4[-cos2(2π) - cos2(0)]

= -13122/4[cos4π - cos(0)]

= -13122/4[1 - 1]

= -13122/4 × 0

= 0

5 0
3 years ago
What is the slope of the line?
jarptica [38.1K]

-3/2

slope = rise/run

We can use the two points to calculate rise (y value change) and run (x value change)

slope = (-6)/4 = -3/2

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csf%5Cfrac%7B%7B96%7D%5E%7B84%7D%7D%7B%7B96%7D%5E%7B82%7D%7D%3D..." id="TexFormula1" title="
NNADVOKAT [17]
<h3>☁️ Learn Math With Me-!</h3>

\sf\frac{{96}^{84}}{{96}^{82}}=... \\

\sf =  {96}^{84}  \div  {96}^{82}

\sf =  {96}^{84 - 82}

\sf =   {96}^{2}

\sf = 96 \times 96

\sf = 9.216

Correct Me If I'm Wrong :)

6 0
2 years ago
Read 2 more answers
What must be true regarding the distribution of the​ population? A. The population must be normally distributed and the sample s
Karolina [17]

Answer:

C. The population must be normally distributed.

Step-by-step explanation:

Population distribution have to do with the classification of people living in a particular geographical area into different segment such as Age, Occupation, Sex, Geographical location.

For instance

If Age distribution is use, the total number of people living in say New york will classified into 0-10 11-19years 20-29years and so on

Sex distribution involves distribution into the male and Female Category

Occupation distribution of Population involves classification of occupant of an area according to their Job.. I.e.Drives-15 people, Lawyer =2 people and so on.

Geographical location distribution of population involves the classification of people living in a particular country according to their geographical names. I.e. Abuja=3.5million people etc.

5 0
3 years ago
Can someone help me get extra credit in my class?<br> Geometry question easy
Irina-Kira [14]

Answer:

the last one is true

Step-by-step explanation:

sin R=PQ/PR=TS/TR

4 0
2 years ago
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