To solve: 9 + 2 + 42 × 5 − 1
=9+2+(42×5)-1
=9+2-1+(42×5)
=10+210
=220
To solve: (9 + 2) + 42 × (5 − 1)
=11+(42×4)
=179
One of the thing we should note is that multiplication always comes first, or we might get the wrong answer.
Hope it helps!
Answer:
see explanation
Step-by-step explanation:
given
f'(x) = 12cos x - 4sin x, then
f'() = 12cos() - 4sin()
[ cos() = -cos(), sin( = - sin() ]
= -12cos() + 4sin()
= - 12 × + 4 ×
= - 6 + 2 ≈ - 2.536 ( 3 dec. places )
Step-by-step explanation:
2x^2 + x - 28
= 2x^2 - 8x + 7x - 28
= 2x(x-4) +7(x-4)
= (2x+7)(x-4)
2x+7 = 0 or x-4 = 0
x = -7/4 or x = 4
Answer:
I think it's the second answer, The head of state is always chosen by the citizens.
Step-by-step explanation:
I hope this helps!