Regarding question number 47, which is what I can read well ...
Equation 4 (3x-2) ² = 36 It can be solved in the following way:
-Apply distributive property
4 (9x ²-12x +4) = 36
-We order the terms and equalize to zero
36x² -48x +16 -36 = 0
36 x ² -48x -20 = 0
The roots of this equation are
(-48 + √(48 ²-4 ×36 × -20)) / 2 ×36
and
(-48 - √(48 ²-4 × 36 ×-20)) / 2 ×36
Finally the solution is:
option C
x = -1 / 3
x = 5/3
Answer:
The temp will drop by 24 degrees in 8 hours
Step-by-step explanation:
Answer:
$180 for 4 shirts
Step-by-step explanation:
1 shirt costs $50 and you need 4 shirts
50 x 4 = 200
10% of 200 is 20 which means you get $20 off the original price of 4 shirts
200 - 20 = 180
You pay 180 dollars for 4 shirts.
Hope this helps! :)
