Answer:
7.6 cm²
Step-by-step explanation:
Area of rectangle= l x w
3 x 4 = 12 cm
Area of circle= πr²
π x 2.5²= 19.625
Area of shaded= Area of circle - area of rec
19.625- 12= 7.625 cm²
≈7.6
<em>I HOPE THIS HELPED</em>
First think out the equation, once you've done that multiply 3 by 25 to get 75
Answer:
#1-
The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends. The seven rows of the table, called periods, generally have metals on the left and nonmetals on the right. The columns, called groups, contain elements with similar chemical behaviours. Six groups have accepted names as well as assigned numbers: for example, group 17 elements are the halogens; and group 18 are the noble gases. Also displayed are four simple rectangular areas or blocks associated with the filling of different atomic orbitals. #2-118
Step-by-step explanation:
Answer:
There are 5 boxes on the tenth row.
Step-by-step explanation:
We are given the following information in the question:
Each row of tissues has 2 fewer boxes than the row below.
The first row has 23 boxes of tissues.
23, 21, 19, 17,...
a) Let f(x) be the function that represent the arithmetic sequence.
Then,
, where x is the number of boxes in previous rows.
b) Comparing the given sequence to an arithmetic progression, we have
First term,a = 10
Common difference,d = -2
Thus, there are 5 boxes on the tenth row.
