I think it's letter A because if u just look at it you can tell that by dividing each number you'll get your answer
You can multiply the number of laps each person ran by the yards in each lap and then add them together:
440 + 2(440) + 3(440) + 4(440)
= 440 + 880 + 1,320 + 1,760
= 4,440 yards
Or you can add the laps first, then multiply by the yards in each lap
(1 + 2 + 3 + 4)(440)
= 10 x 440
= 4,400 yards
Answer:
the answer is 18
Step-by-step explanation:
Answer:
<h2>-5</h2>
Step-by-step explanation:
Given
.
Derivative of
is given by
.
Minimum value of
can be found differentiating again and equating it to zero.
![\dfrac{dg(x)}{dx}=60x^{3}+60x^{2}=0\\\\x^{2}=0\text{ (or) }60x+60=0\\x=0\text{ (or) }x=-1](https://tex.z-dn.net/?f=%5Cdfrac%7Bdg%28x%29%7D%7Bdx%7D%3D60x%5E%7B3%7D%2B60x%5E%7B2%7D%3D0%5C%5C%5C%5Cx%5E%7B2%7D%3D0%5Ctext%7B%20%28or%29%20%7D60x%2B60%3D0%5C%5Cx%3D0%5Ctext%7B%20%28or%29%20%7Dx%3D-1)
Function
takes a minimum value when ![\dfrac{d^{2}g(x)}{dx^{2}}>0](https://tex.z-dn.net/?f=%5Cdfrac%7Bd%5E%7B2%7Dg%28x%29%7D%7Bdx%5E%7B2%7D%7D%3E0)
For,
, ![g''(0)=0;\\g''(-1)=60>0](https://tex.z-dn.net/?f=g%27%27%280%29%3D0%3B%5C%5Cg%27%27%28-1%29%3D60%3E0)
So, minimum value occurs at
;
Minimum value = ![15(-1)^{4}+20(-1)^{3}=-5](https://tex.z-dn.net/?f=15%28-1%29%5E%7B4%7D%2B20%28-1%29%5E%7B3%7D%3D-5)
∴ Minimum value = -5
Answer:
The answer is "156".
Step-by-step explanation:
According to the question, the 144 square root equals 12. The 169 square root equals 13, and by extending the estimated price of blackness, only at the nearest entry, has been a little or less halfway between both the 144 square root and the 169 square root estimated, at 156 square root, that's why 156 is the correct answer.