Answer:
4
Step-by-step explanation:
Assuming the points are on a line in the order F, G, H, I, then segment addition tells you ...
... FG + GH + HI = FI
... 2 + GH + 1 = 7
... GH = 7 - 2 - 1
... GH = 4
Answer:
The last option is the correct one
Step-by-step explanation:
Coordinate grid shown from negative 2 to positive 2 on the x-axis and negative 2 to positive 2 on the y-axis in increments of 1 over 4. Only the whole numbers are labeled. A point A is shown at the intersection of 2 grid lines to the right of the y-axis and 5 grid lines below the x-axis.
2(¼) = 0.5
5(-¼) = - 1.25
Answer:
you have to multiply 23 by 7 and divide 20
Step-by-step explanation:
Answer:
Step-by-step explanation:
Find the sum of the first 42 terms of the following series, to the nearest integer.
2,7,12
Solution
The sum is given by
SUM_n=n/2*(a_1+a_n)
a_n=a_1+(n-1)d
a_1=2, n=42, d=5
The 42nd term is therefore given by
a_42=2+(42-1)5=207
SUM_42=42/2*(2+207)=21*209=4389
The sum of the first 42 terms of the series, therefore, is 4389