The answer is 4. 2x plus 7 is equal to 15. First you subtract 7 from both sides then divide by 2 to get the answer 4. Hope this helps!
Step-by-step explanation:
x²+7x+12
x²+4x+3x+12
x(x+4)+3(x+4)
(x+3)(x+4)
hope it helps
Given : The Distance between Rotherham and London is 156 Miles
Given : Kim drives at a Speed of 60 Miles per Hour
It means : Kim travels 60 Miles in One Hour
⇒ Kim does not Arrive London before 10:00
You need to set it up as a fraction and make the fractions equal each other.
2/3 (2 of their books for 3 of yours)
x/18 (x amount of their books for 18 of yours)
(2/3)=(x/18)
multiply both sides by 18
and you get
36/3 which reduces to 12
so your answer is 12
Answer:
f'(x) = 2x +
Step-by-step explanation:
differentiate using the power rule
( a ) = na
Given
f(x) = x² - + 9 = x² - 4 + 9 , then
f'(x) = 2x + 12 = 2x +