I think the answer is 98 squared
Answer:
As you know, g = 9.81 m/s on the surface of the Earth. ... If the action force is the force she exerts downward on the chair, what is the reaction force? ... it take a 10-N force to increase the speed of a 10-kg toy car from 1.00 m/s to 4.00 m/s? ... (DH 32) How many joules of kinetic energy does a .5 kg cart have when it is ...
Step-by-step explanation:
Answer: Rosie is incorrect because she needs to do the exponent before subtracting.
I got 3.825
your equation would be
(2x-1)(x+7)=72
when you distribute youd get
2x^2 +13x -7 =72
move the 72 over giving you
2x^2 +13x -79=0
i used the quadratic formula and the answer would be 3.825 because a negative answer wouldn’t make sense in this situation
The box has 450 bars in it. 18 times 25 would equal 450