GIVING BRAINLIEST TO THE FIRST RIGHT ANSWER!!!!

the cost of a mobile is set Rs.18000.If mrs.Sharma purchased it with 13% VAT. how much did she pay for it.

Klio2033 [76]

Answer:

Rs.20340

Step-by-step explanation:

Cost of the mobile(without VAT) = Rs. 18000

VAT= 13%*18000

=13/100*18000

=13*180

= Rs.2340

Hence, Cost of the mobile phone with VAT= Rs.18000+ Rs. 2340

= Rs.20340

3 0

3 years ago

What is the mean number of bedrooms per house.<br> please answer as soon as possible

pantera1 [17]

Answer: 2.7

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Explanation:

To find the mean, we add up the numbers and divide by the number of items in the set.

For example, the mean of {1,2,6} is 3 because (1+2+6)/3 = 9/3 = 3.

Unfortunately, we don't know how many rooms are in each terraced house. But we do know that the rooms in each terraced house adds to some variable S. Dividing it over 40 gets us the mean of 2.2 rooms per terraced house.

S/40 = 2.2

S = 40*2.2

S = 88

When considering the terraced houses only, there are 88 rooms in total.

Through similar steps, there are 50*2.9 = 145 rooms in the semi-detached houses

And there are 10*3.7 = 37 rooms in the detached houses.

Overall we have 88+145+37 = 270 rooms among the 100 houses total.

The mean number of rooms when considering all three types of houses is 270/100 = 2.7 rooms per house.

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Another approach:

2.2 is the mean number of rooms for the terraced houses

this represents 40/100 of the entire list

So we'll have (40/100)*2.2 as part of the calculation.

We'll also have (50/100)*2.9 and (10/100)*3.7

The final calculation can be done as this:

(40/100)*2.2 + (50/100)*2.9 + (10/100)*3.7 = 2.7

For more information, check out the concept of a weighted mean.

7 0

3 years ago

How many real roots would f(x)=<br> x^3+2x^2+2x-5 have

goldfiish [28.3K]

Answer:

One real root

Step-by-step explanation:

By the fundamental theorem of algebra, an nth degree polynomial has n-possible real roots.

If there are complex roots, then the the complex roots come in pairs.

Therefore the number of possible real roots of $f(x)=x^3+2x^2+2x-5$ are 3 real roots with no complex pairs or 1 real root with a complex pair.

By Descartes rule of signs, there is only one change of sign in the polynomial (+ to -).

Hence there is only one positive real root.

$f(-x)=-x^3+2x^2-2x-5$

There is change is sign two times but we can not have even number of real roots for this polynomial

Therefore there is only real root.

7 0

4 years ago

A scientist uses a camera to study the stars.

Ugo [173]

Answer:

sure

Step-by-step explanation:

7 0

3 years ago

You are planning a skating party at a rink that charges a basic fee of $6.00 and $6.50 per person for catered parties. You don’t

Alekssandra [29.7K]

Answer:

y = 6.50x + 6 or 71 = 6.50x + 6

10 people are the max you can invite

Step-by-step explanation:

We have the simple equation

y = 6.50x + 6

6.50x because it it per person

6 because it is a flat one time charge

We want the max to be 71 so that will be our y

71 = 6.50x + 6

We are now going to solve for x

65 = 6.5x

x = 10

Hope it helps! (:

4 0

3 years ago