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3 years ago

There are 5 times more boys than girls total number of students is 2814

Mathematics

1 answer:

DiKsa [7]3 years ago

8 0

What are u trying to ask the number of boys or girls or both?

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There are 4 generations. Daughter, mother, grandma, and great-grandma. The daughter is 44 less than the grandma's age. The great

Snezhnost [94]

Answer:

Age of Grandma = 59 years.

Age of great Grandma = 81 years

Ages of Mother = 38 years

Age of Daughter = 15 years

Step-by-step explanation:

Given:

Total years they all lived = 193

We need to find the ages of all lady.

Solution:

Let the age of grandma be 'x'.

Now Given:

The daughter is 44 less than the grandma's age.

So we can say that;

Age of the Daughter = $x-44$

The great-grandma is 22 more than the grandma's age.

So we can say that;

Age of the great grandma = $x+22$

The mother is 80 less than twice the grandma's age.

So we can say that;

Age of the mother = $2x-80$

Now we can say that;

Total years they all lived is equal to sum of age of grandma, Age of the Daughter, Age of the great grandma, Age of the mother.

framing in equation form we get;

$x+x-44+x+22+2x-80=193\\\\5x-102=193$

Adding both side by 102 we get;

$5x-102+102=193+102\\\\5x= 295$

Dividing both side by 5 we get;

$\frac{5x}{5}=\frac{295}{5}\\\\x= 59\ years$

Hence Age of Grandma = 59 years.

Age of great Grandma = $x+22 =59+22 = 81\ years$

Ages of Mother = $2x-80= 2\times 59-80 = 38\ years$

Age of Daughter = $x-44=59-44=15\ years$

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Do what the hint says lol

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Let C = C1 + C2 where C1 is the quarter circle x^2+y^2=4, z=0,from (0,2,0) to (2,0,0), and where C2 is the line segment from (2,

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Not much can be done without knowing what $\mathbf F(x,y,z)$ is, but at the least we can set up the integral.

First parameterize the pieces of the contour:

$C_1:\mathbf r_1(t_1)=(2\sin t_1,2\cos t_1,0)$
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where $0\le t_1\le\dfrac\pi2$ and $0\le t_2\le1$ . You have

$\mathrm d\mathbf r_1=(2\cos t_1,-2\sin t_1,0)\,\mathrm dt_1$
$\mathrm d\mathbf r_2=(1,3,3)\,\mathrm dt_2$

and so the work is given by the integral

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The answer would be C.

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Step-by-step explanation:

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