Question

From the given data calculate y.

Dx = 39, x = 3, Dy = 52

a. 12          b. 14          c. 11          d. 4​

Answer 1

$\huge\bf{Answer..}$

Given :- $</strong><strong> </strong><strong>Dx</strong><strong> </strong><strong>=</strong><strong>3</strong><strong>9</strong><strong> </strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>1</strong><strong>)</strong><strong>$

$</strong><strong> </strong><strong> </strong><strong> </strong><strong>Dy</strong><strong> </strong><strong>=</strong><strong> </strong><strong>5</strong><strong>2</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>2</strong><strong>)</strong><strong>$

$</strong><strong> </strong><strong> </strong><strong> </strong><strong> </strong><strong> </strong><strong>x </strong><strong>=</strong><strong> </strong><strong>3</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>-</strong><strong>3</strong><strong>)</strong><strong>$

To find:- y

Solution :-

Putting the value of x in eq 1)

$</strong><strong> </strong><strong>Dx </strong><strong>=</strong><strong> </strong><strong>3</strong><strong>9</strong><strong>$

$</strong><strong> </strong><strong>D</strong><strong> \times 3 = 39</strong><strong>$

$</strong><strong>D </strong><strong>= \frac{39}{3} </strong><strong>$

$</strong><strong> </strong><strong>So, </strong><strong> </strong><strong>D </strong><strong>=</strong><strong> </strong><strong>1</strong><strong>3</strong><strong>$

☆━━━━━━━━ - ━━━━━━━☆

Now put D=13 in eq. 2)

$</strong><strong>Dy</strong><strong> </strong><strong>=</strong><strong> </strong><strong>5</strong><strong>2</strong><strong>$

$</strong><strong> </strong><strong>13 \times y</strong><strong>=</strong><strong> </strong><strong>5</strong><strong>2</strong><strong>$

$</strong><strong>y = \frac{52}{13} </strong><strong>$

$</strong><strong>So, </strong><strong> </strong><strong>y </strong><strong>=</strong><strong> </strong><strong>4</strong><strong> </strong><strong>.</strong><strong>.</strong><strong>.</strong><strong>$

✔️So d. Y = 4 is ur correct answer...

Step-by-step explanation:

ʜᴏᴘᴇ ɪᴛ ᴍᴀʏ ʜᴇʟᴘs ᴜ...

Answer 2

Step-by-step explanation:

Given : Dx = 39

x = 3

Dy = 52

To find : y=?

Dx=39 → D × x = 39

sub value of x

i.e, D×3=39

→D=39÷3

→D=13

Dy=52

sub value of D

13×y=52

→y=52÷13

→y= 4

therefore, option: D . 4