100/95= 1.05. Each question worth 1.1 rounded. You could miss 19 but if you miss 20 you go under 80.
655 rounded to the nearest hundred would be 700, so that could be an answer but some teachers say that you still have to keep the other digits. So it could be 700 or 1,766,700
D
Step-by-step explanation:
the mean is the average of the set of numbers, which makes it perfect for summarizing data.
Answer:
The first three terms of the series are 8, 10 and 12. The number of terms is 12 to make the sum 228.
Step-by-step explanation:
The series is defined as
Put n=1.
Put n=2.
Put n=3.
The first three terms of the series are 8, 10 and 12.
It is an arithmetic series. The first terms is 8 and the common difference is
The sum of n terms of an arithmetic series is
![S_n=\frac{n}{2}[2a+(n-1)d]](https://tex.z-dn.net/?f=S_n%3D%5Cfrac%7Bn%7D%7B2%7D%5B2a%2B%28n-1%29d%5D)
![288=\frac{n}{2}[2(8)+(n-1)2]](https://tex.z-dn.net/?f=288%3D%5Cfrac%7Bn%7D%7B2%7D%5B2%288%29%2B%28n-1%292%5D)
![288=\frac{2n}{2}[8+n-1]](https://tex.z-dn.net/?f=288%3D%5Cfrac%7B2n%7D%7B2%7D%5B8%2Bn-1%5D)
![288=n[n+7]](https://tex.z-dn.net/?f=288%3Dn%5Bn%2B7%5D)
Equate each factor equal to zero.
The number of terms can not be negative, therefore the value of n must be 12.
Answer:
Step-by-step explanation:
If it takes Keith 6 hours to mow 4 lawns, you can find how many lawns he can mow in 32 hours by dividing 32 by 6 and then multiplying the answer by 4. 32/6= ~5.33. This means that since 32 hours is 5.33 times longer than 6 hours, he can mow 5.33 times more lawns. So 5.33*4 = <u>21.33 lawns in 32 hours!</u>
