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horizontal symmytry

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<pre> Ans. If A word, Letter, fiqure is divided by a straight line. Both the parts are equal in all respects. When the pictures or figures are folded along the straight lines, one part will fit or cover the other part exactly. </pre> <pre> if you draw a horizontal line ______________ across the middle of an object with horizontal symmetry, the top will be a mirror image of the bottom. Examples of capital letters that have horizontal symmetry are: B C D E H I K O X</pre>Thanks (0)
in a co. 85 workers are male and 32%are female .cal total no. of worker

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Let Total Number of Worker = x
Male Worker = 85
% of female worker = 32%
then % of male worker = 68%
So 68% of x = 85
=> 68*x/100 = 85
= x = 85*100/68
=> x = 5*100/4
=> x = 5*25
x = 125
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40
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The area of rhombus is 119 cm^{2 }and its perimeter is 56 cm. Find its altitude ?

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<font face="Roboto, sansserif">Given: </font><font face="Times New Roman, serif">Area of a rhombus is 119 cm</font>2<font face="Times New Roman, serif">and perimeter is 56 cm</font>
To Find: the height of the rhombus.
Solution:
We know that the sides of a rhombus are equal.
So,
Side of a rhombus = perimeter of rhombus/4 = 56/4 = 14 cm
And,
Area of rhombus = base*height
119 = 14*Height
Height = 119/14 = 8.5 cm
Hence, height of a rhombus is 8.5 cm
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What is aerobic respiration?

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Aerobic respiration is the form of respiration which uses oxygen. It can be summarised by this equation:
glucose + oxygen → carbon dioxide + water (+ energy)
Energy is shown in brackets because it is not a substance. Notice that:
 Glucose and oxygen are used up
 Carbon dioxide and water are produced as waste products
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What is aerobic respiration

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Aerobic respiration is the form of respiration which uses oxygen. It can be summarised by this equation:
glucose + oxygen → carbon dioxide + water (+ energy)
Energy is shown in brackets because it is not a substance. Notice that:
 Glucose and oxygen are used up
 Carbon dioxide and water are produced as waste products
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Aerobic respiration is the process of producing cellular energy involving oxygen.
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What is excretory system

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Excretory system is biological system that removes unnecessary excess material from the body fluids of organism so as to maintain balance of chemicals in the body.
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The excretory system in human beings includes a pair of kidneys, a pair of ureters, a urinary bladder, and a urethra. This is also known as the urinary system.
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Avea piece of thin wire in the form of an equilateral triangle of side 31.4 metre is bent into a ring with no loss of wire. find the diameter of the Ring.

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Find the area of an equilateral triangle, each of whose side is 10 cm

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Area of equilateral triangle is A=√3/4(side)^2
Side=10cm
Area=√3/4 (10)^2 =25√3
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Find the area of an isosceles triangle, whose base is 8 cm and length of each equal side is 5 cm

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Area of isosceles triangle = 1/2 *b*h
= 1/2 * 8* 5 = 20 cm^2
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the area of rectangular park is same as that of the square park. If the dimensions of the rectangular park are 200m by 32m, then find the side of the square park

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area of rectange=area of square (given)
lxb=a^2
200x32=a^2
6400=a^2
a=80m
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explain why there is no waste in forest

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The useless products of a forest are biodegradable which get disposed of by the microbs with time.That's why we can say that there is no waste in the forest (Although rotten leaves, fruits etc. can be thought as waste products of forest , but, as the time spends, these wastes get decomposed and provide nutrients to the soil where they fall)
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Ifmama=mami then chacha=?
Prove it by mathematics.

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chachi
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Find the sum of the following expression
3a+4b15c,6(a+b),127c6a

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3a+4b15c+6(a+b)+127c 6a
3a+4b15c+6a+6b+127c6a
3a+10b8c+12
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Given expression:3a+4b15c,6(a+b),127c6a
Second term of expression will be like this
6(a+b)=6a+6b
So, now we will add by writing first term, under it we will write like terms i.e. ,
3a+4b15c
6a+6b
+ 6a 7c +12

3a+10b22c+12
Ans= 3a+10b22c+12
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Find the sum of the following expression
7x + 2y , 3x + 5y

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Its an easy question.
Just add both the terms,
7x+2y+3x+5y
Collect the like terms
(7x+3x)+(2y+5y)
=10x+7y is the final answer
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How is the measurement of time important in a students life's?

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Rahul said that the ratios 2:3 and 4:9 are in proportion . Is he right? why?


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2/3 and 4/9
Doing cross multiplication,
2 x 9 and 3 x 4
= 18 and 12
Since 18 is not equals to 12
Therefore 2:3 and 4:9 are not in proportion.
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No, He is not right.
Two ratios a:b and c:d are in proportion only if a*d = b*c
and in this case this is not possible.
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Write a letter to the Editor of a newspaper about an accident you witnessed on the road during the festive season. Describe the accident, the casualties and possible reasons for the accident. Suggest what the authorities might do to prevent such accidents from happening.

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if in triangle ABC, AE is purpendicular to BC and 6cm and BC is 9 cm what is the area of Trianlge ABC?

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Area of Triangle = 1/2 * H * B
where H = Height of Perpendicular
B = base
Given =
Base = 9 cm
height = 6 cm
area = 1/2 *9*6 = 27 cm^{2}
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what did the dog do to lead the farmer to the hidden gold?

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The dog came running to the farmer and kept on whining and running to and fro till the farmer followed him. The dog began a lively scratching. Thinking it was possibly a buried bone or fish, the farmer struck his hoe in the earth and found the hidden gold.
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2/3 of a number is less than the original number by 10. What is the original number

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Let original numebr be x.
According to question
(2/3)x = x  10
x  2x/3 = 10
x/3 = 10
x = 30
the original number is 30
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what is class interval and frequency(in the lesson data handlinggrade 7)

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Class interval is the size of each class into which a range of a variable is divided, as represented by the divisions of a histogram or bar chart.
Frequency is the number at which something occurs in a given sample.
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In code language,
529 means he got meal,
894 means meal is stale,
273 means he be told ,
604 means eat the stale,
which word represents the number 8?

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Here we see the common numbers in the terms .Let is check the first two terms
Here number 9 is common and Meal is common in both the terms .So 9=meal
Now let us check the second and the fourth statement.here the term 4 is common and stale is common.So 4=stale
So 894= meal is stale
That means the number 8 represents 'is'.
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what is meant by aerobic respiration?

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When Breakdown of glucose occurs with the help of oxygen it is called aerobic respiration
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Aerobic respiration is the process of producing cellular energy involving oxygen.It is the release of energy from glucose or another organic substrate in the presence of oxygen.
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The kind of respiration that takes place in the presence of oxygen. In aerobic respiration the end products produced are Carbon dioxide and a large amount of energy.
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two numbers are in the ratio 1:2if 7 is added to both their ratio becomes 3:5 find the greater number

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Let the first number = x
second number = y
then as per quesiotn,
x/y = 1/2 => y = 2x ...... (1)
according to 2nd condition,
(x+7)/(y+7) = 3/5
=> 5x + 35 = 3y + 21
=> 5x3y = 21  35
=> 5x  3y = 14 .......... (2)
put value of y from (1)
5x  3 * 2x = 14
5x6x = 14
x = 14
x = 14
y = 2*14 = 28
greater number is 28
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x/y = 1/2
2x=y
x+7/ y+7 = 3/5
5x+35= 3y+ 21
Now y=2x , substituting it's value
5x+ 35= 3(2x)+ 21
6x5x = 3521= 14
x=14
y= 2x= 28
So the greater number is 28
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what are sandunes

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Sand dune is a hill of sand near an ocean or in a desert that is formed by the wind.It is a ridge of sand created by wind which is found in deserts or near lakes and oceans.
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A sand dune is a mount, hill or ridge of sand that lies behind the part of the beach affected by tides. They are formed over many years when windblown sand is trapped by beach grass or other stationary objects. Dune grasses anchor the dunes with their roots, holding them temporarily in place, while their leaves trap sand promoting dune expansion. Without vegetation, wind and waves regularly change the form and location of dunes. Dunes are not permanent structures.
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Why jan sunwais are organised ?

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Jun sunwai(Public hearing) was a method where detailed documents derived from official expenditure records were read aloud to the people of villages who gathered.In the form of hearing people are invited to give their testimonies which reveal difference in the official record and people's experience.
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2x+5=13

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2x+ 5=13
Keeping x on one side ,
2x= 135=8
x=8/2=4
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for finding x +5 will come on RHS and will become 5 so
135=8 sooo
x = 8 divided by 2 soo 4
x=4
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Since 2x + 5 = 13
$Subtract5frombothsides\phantom{\rule{0ex}{0ex}}\Rightarrow 2x+55=135\phantom{\rule{0ex}{0ex}}\Rightarrow 2x=8\phantom{\rule{0ex}{0ex}}NowDividebytwoonbothsides\phantom{\rule{0ex}{0ex}}\Rightarrow x=8/4\phantom{\rule{0ex}{0ex}}\Rightarrow x=2$
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Write a letter to the editor of the newspaper about the present scarcity of water and ways to save it

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The Editor
Xyz newspaper
city name
Date :
Sub:
<font face="Arial">Dear Editor
I would like to draw attention of the municipal authorities towards the scarcity of water in our locality. In our locality, there is no fixed time for the supply of water. Sometimes the water is not supplied at all, consecutively for fourfive days, while other times it is for a very short time.</font>
<font face="Arial">Moreover, the water is dirty, muddy and polluted and worms can be seen the floating in the water. Although several complaints were made to the municipality but they have fallen on deaf ears of the authorities. The authorities nave not yet taken any concrete steps to solve our water problem.</font>
<font face="Arial">I shall be thankful to you if our complaints is published in the columns of your esteemed daily.
Sincerely,</font><font face="Arial">Your name</font>
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what is the main respiratory organ and why

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The main respiratory organ is the king which carries oxygen through RBC(Red blood cells) and takes out CO2 from body when we exhale.T he respiratory system also includes trachea which filters the inhaled air and sends it to bronchi from where the air is directly Carried to the lungs.The diaphragm is the muscle of the respiratory system which expands and contracts in the process.
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what is different btween mobile and motion

i dont know
 Add Comment

Answers:

Mobile is a characteristic whereas motion is a process
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