Answer:
H
Step-by-step explanation:
It appears to be just a slope problem in disguise. Where if you find the slope, you find the density of nickel. In this case, it would be copper. The slope appears to be closer to 9, and if you take some of the points and divide it, like where it seems to cross 4 and 35, you would get an answer close to 9. Same with 40 and 4.5, you get 8.89. The only answer closest to that would be H
Answer:
9984 cm³
Step-by-step explanation:
2496 ÷ 1/4
The image shows how to divide, but we get 9984 cm³
Answer:
5.5
Step-by-step explanation:
We have a list of 10 numbers (n = 10) ordered from lower to higher.
1 2 3 4 5 6 7 8 9 10
The median is the value separating the higher half from the lower half of a data sample. Since n is even, there is no middle value and the median is defined as the mean between the two middle values, in this case, 5 and 6. Then,
median = 5 + 6 / 2 = 5.5
Answer:
a) The explicit formula is
b) The 31st term of the sequence is 222
Step-by-step explanation:
a) The explicit formula for an arithmetic sequence is:
The recursive formula for the sequence is
From this formula we can find the common difference by comparing to the general recursive formula:
This means the common difference d=7.
We now substitute the first term and the common difference into the explicit formula: to obtain:
Expand to get:
Simplify:
b) To find the 31st term of this sequence, we substitute n=31 in to the the explicit formula, to obtain:
Multiply to get:
Add to get:
Therefore the 31st term of the sequence is 222
Divide the numerator and denominator by their gcf (25)
75/25= 3
100/25= 4
Final answer: 3/4