&nbsp;

ANSWER

The measures of an angle is four times the measure of its complementary angle. Then, the measure of that angle is

Posted by Khushi Prajapati 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Satyam Kumar 5 years, 4 months ago

let the angle be 'x' Then as per problem x+4x=90 =>5x=90 =>x=90/5 =>x=18

Moksh Yadav 5 years, 4 months ago

ANSWER

Extra questions for chapter 10

Posted by Prachi Shah 5 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

0!=1 why

Posted by Kavi Khattri 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Nikita Padvi 5 years, 4 months ago

ANSWER

200+([-5]+[-4])

Posted by Merryfully Dkhar 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Arpit Agnihotri 5 years, 4 months ago

200+([-5]+[-4]) =200+(-5-4) =200+(-9) =200-9 =191 ans

Yogita Ingle 5 years, 4 months ago

200+([-5]+[-4])

= 200 - 5 - 4

= 200 - 9

= 191

ANSWER

If x=√3-2 find the value of (x+1/x)³

Posted by Tanmay Lende 5 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Factorise a⁷ +ab⁶

Posted by Tanmay Lende 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Ananya Sharma 5 years, 4 months ago

Hlo? Let's do this question...... Soo, Given... a^7-ab^6 =a(a^6-b^6) a((a^3)^2-(b^3)^2) (a^3-b^3)(a^3+b^3) ......x^2-y^2=(x-y)(x+y)

ANSWER

If x+1/x =5 then evaluate x⁶+1/x⁶

Posted by Tanmay Lende 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Gaurav Seth 5 years, 3 months ago

Answer:

Step-by-step explanation:

Given:

squaring on both sides

Using the following identity

Gaurav Seth 5 years, 3 months ago

Answer: Step-by-step explanation: Given: squaring on both sides Using the following identity

ANSWER

Factorise x³-3x²-10x+24

Posted by Tanmay Lende 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

a N S W E R

Factors of x³-3x²-10x+24

Factors of x³-3x²-10x+24= (x-2)(x-4)(x+3)

Step-by-step explanation:

Let the polyomial p(x)=x³-3x²-10x+24

= x³+(-2x²-x²)+(2x-12x)+24

=(x³-2x²)+(-x²+2x)+(-12x+24)

=x²(x-2)-x(x-2)-12(x-2)

=(x-2)(x²-x-12)

=(x-2)(x²-4x+3x-12)

=(x-2)[x(x-4)+3(x-4)]

=(x-2)[(x-4)(x+3)]

=(x-2) (x-4) (x+3)

Therefore,

Factors of x³-3x²-10x+24

= (x-2)(x-4)(x+3)

ANSWER

Find the value of a if (x-a) is a factor ofx⁵-a²x³+2x+a+3 hence factorise x²-2ax-3

Posted by Tanmay Lende 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

Find the value of 'a' if (x - a) is a factor of x⁵ - a²x³ + 2x + a + 3. Hence, factorise x² - 2ax - 3.

</div> <div class="qsnDetails" style="margin:0px; padding:0px; text-align:start; -webkit-text-stroke-width:0px">

<font color="#000000">A N S W E R</font>

</div> <div class="expertBlock" style="margin:0px; padding:0px; text-align:start; -webkit-text-stroke-width:0px">

Let p(x) = x⁵-a²x³+2x+a+3

Since, (x-a) is a factor of p(x), so p(a) = 0

</div>

ANSWER

Entire concept of root

Posted by Prince Jain 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Meghna Thapar 5 years, 4 months ago

Root comes from the Latin word radix, which means "starting point," and you can think of the root of something as the place it starts from, whether that's the root of a tree, or the root of a problem.

The major types are:

Fibrous Roots. Fibrous roots are found in monocot plants. ...
Taproots. Taproots are found in the majority of dicot plants. ...
Adventitious Roots. Adventitious roots are similar to the fibrous roots. ...
Creeping Roots. ...
Tuberous Roots. ...
Water Roots. ...
Parasite Roots.

ANSWER

In an isosceles triangle ABC, with AB=AC,the bisector of angle B and angle C intersect each other at o. Join A to O. Show that: (1)OB=OC (2)AO bisect angle A

Posted by Dilkhush Kumar 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 4 months ago

In an isosceles triangle ABC, with AB = AC, the bisectors of ∠B and ∠C intersect each other at O. Join A to O. Show that:

(i) OB = OC
(ii) AO bisects ∠A.

<hr />

Given: In an isosceles triangle ABC, with AB = AC, the bisectors of ∠B and ∠C intersect each other at O. Join A to O.
To Prove: (i) OB = OC
(ii) AO bisects ∠A.
Proof: (i) AB = AC | Given
∴ ∠B = ∠C
| Angles opposite to equal sides of a triangle are equal

ANSWER

Can you explain ex. 8.1

Posted by Avni Vaswani 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

🖤 🖤 5 years, 4 months ago

It's about how to prove that a following quadrilateral is a rectangle, square, parallelogram etc.... It can be proved using the congruence rules and the rules of quadrilateral

Prince Jain 5 years, 4 months ago

No But you can go on YouTube and then understand the Ex 8.1

ANSWER

What is the function of diameter

Posted by Deepu Rai 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Meghna Thapar 5 years, 4 months ago

The diameter measures the circle at its largest point across. Another definition that is related to the diameter is the radius. It is the measurement from the center of the circle to its edge. Diameter is defined as the length of a straight line through the center of a circle. An example of a diameter is the length of a line sliced down the center of a pie. There are two common abbreviations of diameter: dia. and diam. If you want to make either of these plural, simply add on an “s.”

ANSWER

Plot the points A(3, 10), B(-3, 5) and C(-1,-6) on the graph paper. Join them in pairs and identify the figure so formed.

Posted by Unknown Student 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Arpit Agnihotri 5 years, 4 months ago

Triangle is the obtained figure obtained by plotting these points on the graph paper.

Prince Jain 5 years, 4 months ago

The figure we obtained is an triangle

ANSWER

A rational number between √12 and √13 .

Posted by Prokash Dutta 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Krishna Chouhan 5 years, 4 months ago

Infinite rational numbers

ANSWER

Find the range of the data 5,6,12,13,15

Posted by Noorul Hudha 5 years, 4 months ago

CBSE > Class 09 > Mathematics

4 answers

Raunak Rajak 5 years, 4 months ago

5 to 15 is the range of given data

Abhay Singh 5 years, 4 months ago

=15-5=10

Abhay Singh 5 years, 4 months ago

Range=highest observations-lowest observations

Prachi Sethi 5 years, 4 months ago

https://youtu.be/pIj-JQcBb9I

ANSWER

X³+6x²+11x+6

Posted by Karthik Karthik 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Prachi Sethi 5 years, 4 months ago

https://youtu.be/pIj-JQcBb9I

Unknown Student 5 years, 4 months ago

X(x-1) (x-5)

ANSWER

F(x)=(1+x)(1+x²)(1+x4)(1+x8) dwara pradatt falon Kijiye ka avkalaj gyat kijiye is Prakar f(1) gyat kijiye

Posted by Himanshu Kumar 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Prachi Sethi 5 years, 4 months ago

https://youtu.be/pIj-JQcBb9I

ANSWER

ABC is isosceles triangle in which AB =AC bisects exterior angle PAC and CD ll AB ( See Fig.8.14) . Show that . (I) <DAC =<BCA (ii) ABCD is a parallelogram .

Posted by Hriday Saha 5 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Prachi Sethi 5 years, 4 months ago

https://youtu.be/pIj-JQcBb9I

Manyata Joshi 5 years, 4 months ago

Answer on page no.142 and 143 of maths ncert

ANSWER

Find the area of the triangle whose sides are 11m 15m and 6m

Posted by Alka Yadav 5 years, 4 months ago

CBSE > Class 09 > Mathematics

4 answers

Prachi Sethi 5 years, 4 months ago

https://youtu.be/pIj-JQcBb9I

Aaditya Pundir 5 years, 4 months ago

8√10

Vidya Pansare 5 years, 4 months ago

20√2

Mohd Abdul Bilal 5 years, 4 months ago

28.28 m²

ANSWER

A village ,having a population of 4000, requires 150 liters of water per head per day. It has a tank measuring 20 m× 15 m× 6m. Fir how many days will the water of this tank last?

Posted by Priya Yadav 5 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Prachi Sethi 5 years, 4 months ago

https://youtu.be/pIj-JQcBb9I

Abhay Pratap Singh 5 years, 4 months ago

Dghd

Gaurav Seth 5 years, 4 months ago

Given,

Dimensions of the tank = $20\hspace{1mm}m\times 15\hspace{1mm}m\times 6\hspace{1mm}m$

4000 people requiring 150 litres of water per head per day

The total volume of water required = $4000\times150 = 600000\ litres$

Let the number of days the water will last be $n$

We know,

The volume of a cuboid = $l\times b \times h$

$\therefore$ The volume of the water tank = $(20 \times15\times 6)\ m^3 = 1800\ m^3 = 1800000\ litres$

According to question,

$n\times600000 = 1800000$

$\\ \Rightarrow n= 3$

Therefore, the water in the tank will last for 3 days.

ANSWER

A rumbas sige 288 ,a bahu 28m hele hight ?

Posted by Umesh Gadatia 5 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Every whole number is a natural number?

Posted by Akanksha Singh 5 years, 4 months ago

CBSE > Class 09 > Mathematics

5 answers

Beyon P Binoy 5 years, 4 months ago

No, every whole number is not a natural number, as zero is not included in natural number.

Saumya Verma 5 years, 4 months ago

Every whole number is not a natural number as whole number is combination of natural number including zero Every natural number can be a whole number

Nitin Tripathi 5 years, 4 months ago

How

Nitin Tripathi 5 years, 4 months ago

Akanksha Singh 5 years, 4 months ago

Yes every whole number is a natural number.

ANSWER

Proof for Heron's Formula ?

Posted by Ayush Tiwari 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Meghna Thapar 5 years, 4 months ago

Heron's Formula -- An algebraic proof

where b is the length of a base and h is the height to that base. There is at least one side of our triangle for which the altitude lies "inside" the triangle. For convenience make that the side of length c. It will not make any difference, just simpler. Heron's formula computes the area of a triangle given the length of each side. If you have a very thin triangle, one where two of the sides approximately equal s and the third side is much shorter, a direct implementation Heron's formula may not be accurate.