This link could be useful.
http://www.purplemath.com/modules/absineq.htm
Answer:
what inequalities? all I see is a black void
Step-by-step explanation:
98+876=864 sheepcot I am so happy for that your so
X³ - 9x² + 5x - 45
x²(x - 9) - 5(x - 9) ⇒ x³ - 9x² - 5x + 45 INCORRECT
x²(x + 9) - 5(x + 9) ⇒ x³ + 9x² - 5x - 45 INCORRECT
x(x² + 5) - 9(x² + 5) ⇒ x³ + 5x - 9x² - 45 CORRECT
It just needs to be rearranged.
x(x² - 5) - 9(x² - 5) ⇒ x³ - 5x - 9x² + 45 INCORRECT
Answer:
A = 21
J = 2A = 42
C= A+5 =26
Step-by-step explanation:
C= christines text messages
J = jims messages
A = ali messages
Jim sent 2 times as many messages as Ali.
J = 2A
Ali sent 5 fewer messages than Christine.
A =C-5
A+5 =C
Christine, Jim, and Ali sent a total of 89 text messages
C+J+A = 89
substitute
C +5= A
A+5 +J+A = 89
combine like terms
2A +5+J = 89
now substitute J = 2A
2A +5+2A = 89
combine like terms
4A +5 = 89
subtract 5 to each side
4A +5-5 = 89-5
4A = 84
divide by 4
A = 21
J = 2A = 42
C= A+5 =26
