Danii1999
Danii1999
21-12-2014
Mathematics
contestada
(c-30)(c-120)=184 how do I solve it
Respuesta :
luana
luana
21-12-2014
[tex](c-30)(c-120)=184\ \ \ \ | multiply \ both\ brackets\\\\ c^2-120c-30c+3600=184\ \ \ \ | subtract\ 184\\\\ c^2-150c+3416=\ \ \ \ | factorisation\\\\c^2-122c-28c+3416 \\\\(c-122)(c-28)=0\\\\c=122\ \ or\ \ \ c=28[/tex]
Answer Link
konrad509
konrad509
21-12-2014
[tex](c-30)(c-120)=184\\ c^2-120c-30c+3600=184\\ c^2-150c+3416=0\\ c^2-150c+5625-2209=0\\ (c-75)^2=2209\\ c-75=\sqrt{2209} \vee c-75=-\sqrt{2209}\\ c=75+47 \vee c=75-47\\ c=122 \vee c=28 [/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 16+ )
Otras preguntas
Pleas please help! Solve for d. 3/15 - d/5 = 5/6 + d/3
Meetings of Federal Reserve officials occur in Boston New York Washington, D.C. Chicago
Save You More offers a buy one/get one free item each week. Customers who purchase only one of the item must pay the regular price. The limit is one deal per cu
Why is there a bicameral system in Cameroon?
In what areas of the world did agriculture first develop?
What role did irrigation systems play in the development of civilizations?
If 2+root3/2-root/3 + 2-root3/2+root3 =a+b root3 find the values of a and b
The table shows the results of rolling a number cube, with sides labeled 1 through 6, several times. What is the experimental probability of rolling a 1 or a 5
Evaluate the expression below when x = 3. 5x2 - 12 x + 3
Why does fluid pressure increases with depth?
