Answer:
Step-by-step explanation:
7*4a=-14
7-7*4a=-14-7
4a=-21
a=-5.25
Answer:
a = 4 and b = - 30
Step-by-step explanation:
Expand the left side and compare like terms on both sides, that is
(x + 2)(x - 3)(x + 5) ← expand the first pair of factors using FOIL
= (x² - x - 6)(x + 5) ← distribute
= x³ + 5x² - x² - 5x - 6x - 30 ← collect like terms
= x³ + 4x² - 11x - 30
Compare like terms with x³ +ax² - 11x + b
4x² and ax² ⇒ a = 4
+ b and - 30 ⇒ b = - 30
(2×100)+(3×1)+(4×1/10)+(3×1/1000)
200+3+0.4+0.003
203.401
Please give me brainliest
Time for entire trip = 2d/30 hours
Time for first part of trip = d/60.
Time for second part of trip, is given by:

Therefore the speed during the second distance d is 20 mi/h.