40 x ( $84 / 8 ) = ( 40 / 8) x $84 = 5 x $84 = $420
Answer:
independent: miles
dependent: minutes/hours
Step-by-step explanation:
can I see the other options for the rest?
Answer:
x = 23
Step-by-step explanation:
Δ ABC and Δ DEF are congruent by the SAS postulate, thus corresponding sides are congruent, that is
BC = EF, substitute values
x - 4 = 19 ( add 4 to both sides )
x = 23
Answer:
(3x−y)(x+7y)
Step-by-step explanation:
Factor (2x+3y)^2−(x−4y)^2
3x^2+20xy−7y^2
=(3x−y)(x+7y)