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Answer:

Significant FIGURES are basically the digits of NUMBER that apply SUBSTANTIAL value for its measurement. Some rules for significant figures:

- leading zeros are insignificant;

-all non-zero numbers are significant;

-TRAILING zeros to the RIGHT of the decimal are significant.

ANSWER:

A, 3.............................................

Step-by-step explanation:

since lengh of MINUTE hand is 200% of

hour hand

therefore

ratios of LENGTH between.

hour hand and minute hand= 1 : 2

lengh of hh= 20mm

length of mh= 40 mm

distance covered by hour hand in 1 hour

(since time TAKEN to complete one round by hour

hand is 12 HOURS.)

= 2×pi× length/ time taken for complete 1 round

= 2× 20×pi/12=10pi/ 3 ( say it is X)

X=. 10pi/3....................(1)

similarly if length of minute hand be 2 unit then

distance covered by it in 1 hour

(since time taken to complete one round by

minute hand= 1 hour)

= 2×pi×40/ 1

= 80pi unit ( say it is Y)

Y = 80pi ......................(2)

Therefore difference of distances covered

by these two hands

= ( 80pi -10 pi/3)

=. (22/7)(80-10/3)

= 22×230/21

= 240.95 mm

since minute hand is 20 minute before

than the hour hand according as the

figure given.

=> difference between these two hands.

= 1- 20/60 of 240.95

2/3 of 240.95

= 160.63 mm

hence tip of minute hand will be 160.63

mm ahead from hour hand after one hour.

Step-by-step EXPLANATION:

Answer:

36ft

Step-by-step EXPLANATION:

PERIMETER of a rectangle= 2l+2b=2(l+b)   2(10+8)=2(18)=36

0.86 is bigger

MARK IT AS BRAINLIEST N FOLLOW ME....

ANSWER:

Step-by-step EXPLANATION:

Answer:

40 cm ; 4 cm.

Step-by-step EXPLANATION:

LET the width of the rectangle be a. So, as length is 10 times of the width it should be 10 times of a, length of the rectangle is 10A.

  Here,

      PERIMETER = 88 cm

 2( length + width ) = 88 cm

   length + width = 44 cm

   10a + a = 44 cm

   11a = 44 cm

   a = 4 cm

    Thus,

           Width of the rectangle is 4 cm and length is 10a or 10( 4 cm ) or 40 cm.

Three dice thrown total events would be 6 X 6 X 6 = 216

Number of events of getting a total of 5 = 6

i.e. (1, 1, 3), (1, 3, 1), (3, 1, 1), (2, 2, 1), (2, 1, 2) and (1, 2, 2)

Therefore, PROBABILITY of getting a total of 5

              Number of FAVORABLE outcomes

P(E1) =     Total number of possible outcome

     = 6/216

     = 1/36

☯ AnSwEr :

As, we have to find the SUM of 4.075, 2.09 and 0.075, Using significant digits.

So,

★ Number of significant digits in 4.075 = 4

★ Number of significant digits in 2.09 = 3

★ Number of significant digits in 0.075 = 4

Now, we will calculate their sum.

→ Sum = 6.24

So, OPTION B is correct.

★ Additional Information :

☯ Uncertaininty in measurment

When true value is not equal to experimemtal calculations then there os uncertainty in measurment.

↪ For EXAMPLE 2g of

Molecules = 602,200,000,000,000,000,000,000

But if we write (602,200,000,000,000,000,000,000) as 6.022 × 10²² then our uncertainty in MEASUREMENT can reduce.

Now, Mass of H atom.

0.00000000000000000000000166

But if we write (0.00000000000000000000000166) as 6.61

then our uncertainty in measurement can reduce.

→ Meaningful to present the data, realisitiolly accurating with uncertainity.

★ There are three ways to reduce the uncertainty in measurement.

(i) Scientific Notation

(ii) Significant figures

(iii)Dimensional analysis

Answer:

41 minute.

Step-by-step explanation:

Time( minutes ) TAKEN in doing HOMEWORK : 90 minute

Time taken in reading : ( 2 / 3 ) hour

            ⇒ ( 2 / 3 ) X 60 min      { 1 hr = 60 min }

            ⇒ 2 x 20 min

            ⇒ 40 minute

Time taken in making lunch : 540 sec

           ⇒ 540 / 60 min        { 1 sec = 1 / 60 min }

           ⇒ 9 min

Time taken in making lunch and reading = 40 min + 9 min = 49 min.

   we are said to find the time taken more than doing these LAST two WORKS in comparison to the first one.

      ⇒ 90 min - 49 min

      ⇒ 41 min

Answer:

250 and 1

Step-by-step explanation:

250*1 = 250

250+1= 251 MAX SUM of POSITIVE no

ANSWER:

PLEASE WRITE the QUESTION with your DAIGRAM

ANSWER:

can you PLEASE WRITE the QUESTION in ENGLISH........

ANSWER:

HEY MATE

Your answer is 3

Answer:

Step-by-step explanation:

Let 1 number be x and the other number be y

Then x+y = 300

y = 300-x

Now we KNOW that the first differentiation of maxima and minima is equal to 0

So dy/dx = 0

Here y = The product of the TWO numbers ie x(300-x) as we are given that the product of the 2 numbers corresponds to maxima.

dy/dx = d/dx x(300-x)

= d/dx (300x-x^2)

Applying the FOLLOWING rules

x^n = nx^n-1*dy/dx (x) and

dy/dx (a-b) = dy/dx (a) - dy/dx (b)

= 300*x^0 [d/dx (x)] - 2*x^1[d/dx (x)]

= 300 - 2x

Now we can equate it to 0

300 - 2x = 0

x = 150

So substituting value of x in the equation x+y = 300

We get value of y also equal to 150

Now you can check the answer too although it will be very lengthy by hit and trial but I guarantee you that you will never get a PAIR whose product is greater than these.

55/100=11/20 is the FRACTION required

Hope it HELPS

Mark it as BRAINLIEST if you are SATISFIED with the ANSWER

Answer:

A

STEP-by-step explanation:

Given,

           i = √( - 1 )

      ⇒ i^2 = ( √-1 )^2

      ⇒ i^2 = - 1

Here,

   Divide as WELL as multiply by 3 + 2i:

In the last step : ( 8 - i )( 3 + 2i ) = 24 + 16i - 3i - 2i^2

     ( 3 - 2i )( 3 + 2i ) = ( 3 )^2 - ( 2i )^2

     As discussed above, i^2 = - 1

⇒ 2 + i

Now,

         2 + i = a + bi

      ⇒ a = 2    ;    bi = i

      ⇒ a = 2    ; b = 1

  Required value of a is 2.

         OPTION A

Answer:

Around 265 rupees

Step-by-step explanation:

For EVERY ONE litre car can travel 10-11 KM

Therefore for 40 km car REQUIRES 4ltrs of diesel

So 4x65=260

ANSWER:

Properties present that REPRESENT exponential function

Step-by-step explanation:

As the x-values INCREASE,

the y-values increase.

The point (1, 0) exists in the table  is False

but point (0 , 1) exists in table

b⁰ = 1    but b¹ = b ≠ 0 Hence (1, 0) does not exist in table

As the x-values increase, the y-values decrease.  - False

As the x-values decrease, the y-values decrease, approaching a singular value.

Answer:

2

Step-by-step explanation:

We know,

     Equation of a circle are written in the form of

     √{ ( x - x₁ )^2 + ( y - y₁ )^2 } = radius

Here,

⇒ x^2 + y^2 + 4x - 2y = - 1

⇒ x^2 + 4x + y^2 - 2y = - 1

     ADDING 4 to both SIDES :

⇒ x^2 + 4x + 4 + y^2 - 2y = - 1 + 4

     Adding 1 to both sides;

⇒ x^2 + 4x + 4 + y^2 - 2y + 1 = - 1 + 1 + 4

⇒ ( x^2 + 4x + 4 ) + ( y^2 - 2y + 1 ) = 4

      Using a^2 + B^2 + 2ab = ( a + b )^2

                 a^2 + b^2 - 2ab = ( a - b )^2

⇒ ( x + 2 )^2 + ( y - 1 )^2 = 4

⇒ { x - ( - 2  ) }^2 + ( y - 1 )^2 = 2^2

⇒ √[ { x - ( - 2 ) }^2 + ( y - 1 )^2 ] = 2

        Now, this equation is in the form as given above, so radius of the that circle must have been represented by the RHS of this eq.

       Radius = 2

Step-by-step explanation:

2 and 3 are the COEFFICIENT.

ANSWER:

HEY MATE search

Step-by-step EXPLANATION:

Hey mate, answer is in the attachment...

Hope it helps you.

Please mark me as the BRAINLIEST.... ;)

@ Follow me for follow back.....

ANSWER: 25

Step-by-step EXPLANATION:

Answer:

√a - √B.

Step-by-step explanation:

Let the required NUMBER X.

 Here,

    Multiplication of ( √a + √b ) and x is a - b.

⇒ ( √a + √b ) * x = ( a - b )

⇒ x = ( a - b ) / ( √a + √b )

  On RHS: multiply as WELL as divide by √a - √b :

⇒ x = ( a - b )( √a - √b ) / ( √a + √b )( √a - √b )

          We KNOW, ( a + b )( a - b ) = a^2 - b^2.

    Thus, ( √a + √b )( √a - √b )

                     =  ( √a )^2 - ( √b )^2

                     = a - b

   So, ( √a + √b )( √a - √b ) = a - b

Continued  :

⇒ x = ( a - b )( √a - √b ) / ( a - b )

⇒ x = √a - √b

        Hence the required number is √a - √b.

Answer:

I THINK 30% DISCOUNT is better...

Step-by-step explanation:

As she SAVES $7.49 and if she uses $5 off coupon...she need to PAY $19.95 rather than paying $17.46 by USING 30% discount

HOPE IT HELPS U MY FRIEND...

MAI KDO KITTA tuhannu UNFOLLOW

Answer:

Step-by-step explanation:

This number has 7 digits

The digit in the ten thousands place is 9

The digit in the hundreds place is 3 TIMES greater than the digit in the ONES place

The digit in the millions place is the difference between the tens place and the thousands place

The hundreds thousands place is the same as the tens place

The tens place is 4 more than the ones place

The digit in the ones place is 6 LESS than the digit in the HUNDRED thousands place

The digit in the thousands place is 5

Given:

6x + PY = 21

qx + 5y = 7

The system of equations have infinite solutions

To FIND:

The value of p/q

Solution:

6x + py = 21 --------------- [1 ]

qx + 5y = 7   --------------- [2]

[2] x 3 :

3qx + 15y = 21  --------------- [3]

Comparing [2] and [3]

3q = 6

q = 2

p = 15

Find the value of p/q:

p/q = 15/2

AnswerL 15/2

In terms of π

Arc AB = 0.83 π metres

Arc DE = 2.5 π metres

Arc GH = 1.6 π metres

Explanation →

Given ,

• Three circles of RADIUSES 1m , 3m and 2m.
• R1 = 1m
• R2 = 3m
• R3 = 2m

• The angle ( ∅ ) is given as = 150° for each CIRCLE

So , Calculating the Arc lengths of each circle by using the FORMULA ,

• Arc Length = 2πr ( ∅ / 360° )

For 1st circle having radius R1 = 1m , Arc length will be ,

• Arc length ( AB ) = 2π R1 ( ∅ ÷ 360° )
• AB = 2π x 1 x 150° / 360°
• AB = 300° / 360° x π
• AB = 0.83 π m ( in terms of π )

For 2nd circle having radius R2 = 3m , Arc length will be ,

• Arc length ( DE ) = 2π R2 ( ∅ ÷ 360° )
• DE = 2π x 3 x 150° / 360°
• DE = 900° / 360° x π
• DE = 2.5 π m ( in terms of π )

For 3rd circle having radius R2 = 2m , Arc length will be ,

• Arc length ( GH ) = 2π R3 ( ∅ ÷ 360° )
• GH = 2π x 2 x 150° / 360°
• GH = 600° / 360° x π
• GH = 1.6 π m ( in terms of π )

Length of arc

• AB = 0.83 x π
• AB = 2.619047 metres

Length of arc

• DE = 2.5 x π
• DE = 7.857142 metres

Length of arc

• GH = 1.6 x π
• GH = 5.23809 metres

Answer:

1/4 of 3/4 is EQUAL to 3/16

rabea ATE 3/16

so LEFT will be 3/4-3/16 = 9/16

ANSWER:

They both are HUSBAND and WIFE

ANSWER:

What should I do in this QUESTION?

ANSWER:

I don't no I m so SORRY but I REALLY don't KNOW

Your ANSWER mate:

2H2+O2--->2H2O

He will have 4 SIGNIFICANT DIGITS.

Answer

1/2

Step-by-step explanation:

3/4-1/4=1/2

Answer:

98cm2

Step-by-step explanation:

Find Area of triangle using HERONS formula

s= a+B+c/2= 21cm

After APPLYING formula , area of triangle=

we get 42cm2

and now we have to find height of triangle.

7.5h= 42cm2

h= 5.6cm

and we know that area of trapezium= 1/2 * sum of parallel SIDES* DISTANCE between them

= 1/2*35*5.6= 98cm2

Radius of circle = 9 ft.

Minor ANGLE (Angle ABC belonging to minor sector) = 30°

Major angle = 360°-30°= 330°

AREA of shaded region =

Length of ADB =

ANSWER:

HI..

GM

..

have a GREAT DAY..

2×30

6×10

2+58

ANSWER:

The no. which are DIVISIBLE by TWO are CALLED EVEN no.s

Answer:

150

Step-by-step EXPLANATION:

LET no. of dancers be X.

So 42% of X is 63.

i.e 42/100 * X = 63

i.e X = 6300/42 = 900/6 = 150

ANSWER:

your ANA

Step-by-step explanation:

11.8×4.8

=>56.64

HCF of 12 and 30 is 6.

HCF stands for highest common factor.

12= 2×2×3

30 = 2×3×5

So , HCF = 3×2 = 6

Answer:

I think the HCF is 9

Step-by-step EXPLANATION:

i HOPE it helps u FOLLOW me will follow u back

ANSWER:

answer is 9 ........

MARK me BRAINLIEST

a)2 is the answer

Hope it helps

MARK it as BRAINLIEST if you are satisfied with the answer

Step-by-step explanation:

The Rational Zeros THEOREM. ARRANGE the polynomial in descending order. WRITE down all the factors of the constant term. These are all the POSSIBLE values of p. Write down all the factors of the leading coefficient. Write down all the possible values of . Use synthetic division to determine the values of for which P( ) ...