-10= ( -4)+(-3)+(-2)+(-1)
Answer:
True speed of the car is 87 km/h.
Step-by-step explanation:
Speed = 100 km/h
hike in speed = 25 %
Let the true speed is v.

Mel purchased 5 shirts and Joe purchased 2 shirts.
quadratic formula:
x = <u>-b ± √(b² - 4ac)</u>
2a
7x² - x = 7
subtract 7 from both sides:
7x² - x - 7 = 0
plug values into the quadratic formula:
x = <u>-(-1) ± √((-1)²- 4(7)(-7))</u>
2(7)
simplify:
x = <u>1 ± √(197)</u>
14
Answer:
9
Step-by-step explanation:
120=4x=6+7x+15
120=11x+21
-21 -21
99 ÷ 11x
AB=9