Question

when X varies directly as 2y and X=6 when y= 20 find y when X = 9​

Answer 1

Step-by-step explanation:

X proportional to 2y

Therefore,

x = c (2y)

where c is the proportional constant.

Given that x = 1 when y = 20

So,

x = c (2y)

1 = c (2)(20)

1 = c (40)

c = 1/40

Now for x = 9,

x = c (2y)

9 = (1/40)(2y)

9 = (1/20)y

y = 180.

✔✔✔

Answer 2

Answer:

Hello so here is the answer

☺️✨

Step-by-step explanation:

x ᴠᴀʀɪᴇꜱ ɪɴᴠᴇʀꜱᴇʟʏ ᴀꜱ ʏ

ᴛʜᴇʀᴇꜰᴏʀᴇ x ᴠᴀʀɪᴇꜱ ɪɴᴠᴇʀꜱᴇʟʏ ᴀꜱ 2ʏ

ɴᴏᴡ ,

x=6

ʏ=20

ᴛʜᴇʀᴇꜰᴏʀᴇ 2ʏ=2×20=40

ᴀ/Q

×/2ʏ=6/40

=> 9/2ʏ ×6/40

=>9×40=6×2ʏ

=>360=12ʏ

=>360/12

=30

ꜱᴏ ᴛʜᴇ ᴀɴꜱᴡᴇʀ ɪꜱ 30

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘꜱ ʏᴏᴜ

ɪꜰ ɪᴛ'ꜱ ʜᴇʟᴘꜰᴜʟ ᴛʜᴀɴ ᴍᴀʀᴋ ᴍᴇ ᴀꜱ ʙʀᴀɪɴʟɪᴇꜱᴛ

ᴀɴᴅ ʜᴀᴘᴘʏ ɴᴇᴡ ʏᴇᴀʀ✨