Answer:
s + s + 6 = 44
2s = 38
2s + 6 = 44
Step-by-step explanation:
Given parameters:
Length of the board = 44inches
Unknown:
equation to find the shorter piece s = ?
Solution:
let the longer piece = L
Shorter piece = s
s + L = 44 ---- i
Now,
L = s + 6 ----- ii
put L = s + 6 into i;
s + s + 6 = 44
2s + 6 = 44
2s = 44 - 6
2s = 38
Step-by-step explanation:
ʜᴏʟᴀ ɪᴅɪᴏᴛᴀ
ᴇsᴛᴜᴘɪᴅᴏ ᴇsᴛᴜᴘɪᴅᴏᴏ sᴏ ᴘᴀᴛʜᴇᴛɪᴄᴏ
Given:
1500 minutes per month
785 minutes spent.
How many more minutes can he use?
This is a simple case of subtraction.
1500 minutes - 785 minutes = 715 minutes.
Lalo still have 715 minutes left to use.
It would be 2700.
540x2=1080
810x2= 1620
1620+1080= 2700
Let n represent the number.
.. (n -9)^2 = n -3 . . . . . the square of 9 less than the number is 3 less than the number
.. n^2 -18n +81 = n -3
.. n^2 -19n +84 = 0
.. (n -7)(n -12) = 0
.. n = 7 or 12
The number could be 7 or 12.
_____
Check:
.. (7 -9)^2 = (-2)^2 = 4 = 7 -3 . . . . answer checks OK
.. (12 -9)^2 = 3^2 = 9 = 12 -3 . . . . answer checks OK
