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NikAS [45]
3 years ago
14

A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls

at Rs. 750/m² is 49,500. Find the height of the classroom…​
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
8 0

Answer:

A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls at Rs. 750/m² is 49,500. Find the height of the classroom…

Step-by-step explanation:

A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls at Rs. 750/m² is 49,500. Find the height of the classroom…

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Need answer please show work
Jet001 [13]

Let us set up some variabe:

  • height: h
  • base: b

Use the known information:

  • b = 2h + 8

Now lets find the area

   Area = (1/2) * b *h = (1/2) * h * (2h + 8)

Hope that helps!

7 0
2 years ago
M% of n? Meaning that you won't get an actual number. For example, m/100*n.
allochka39001 [22]

Answer:

\frac{m \times n}{100}

Step-by-step explanation:

The value in 100=m

The value in 1=\frac{m}{100}

The value in n=\frac{m \times n}{100}

7 0
3 years ago
What is the volume of this figure?
Sav [38]

Answer:

90 cubic inches

Step-by-step explanation:

4 0
3 years ago
If u-ai + bj and v-ci + dj are vectors, then which of the following statements is not true?
alukav5142 [94]

Answer:

Option C

Step-by-step explanation:

Given that u-ai + bj and v-ci + dj are vectors

We have dot product

u.v = (ai+bj).(ci+dj) hence inner product of u and v.  So option a is true

The dot product of u and v is a scalar is true because dot product is always a scalar

The dot product of u and v is a vector. is false because dot product is only a scalar and has no direction and hence cannot be a vector

The dot product of u and v is given by the expression ac+bd

True because we multiply corresponding i components and j components and add.

So only C is not true.

7 0
3 years ago
In 2000, the population of Big Springs was 13 thousand. Use the given doubling
trasher [3.6K]

Answer:

The answer is "26179.4".

Step-by-step explanation:

Assume year 2000 as t, that is  t =0.

Formula:

A= A_0e^{rt}

Where,

A_0 = \ initial \ pop \\\\r= \ rate \ in \ decimal \\\\t= \ time \ in \ year

for doubling time,

r = \frac{log (2)}{t} \\

r = \frac{\log (2)}{ 40} \\\\r= \frac{0.301}{40}\\\\r= 0.007

Given value:

A = A_0e^{rt} \\\\

A_0 = 13000

t= 40 \ years

when year is 2000, t=0 so, year is 2100 year as t = 100.

A = 13000 \times e^{et}\\\\A = 13000 \times e^{e \times t}\\\\A = 13000 \times e^{0.007 \times 100}\\\\A = 13000 \times e^{0.7}\\\\A= 13000\times 2.0138\\\\A = 26179.4

7 0
3 years ago
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