Answer:
a, Row 1 = 30 seats
Row 2 = 32 seats
Row 3 = 34 seats
Row 4 = 36 seats
b, n + equidistant number of seats added each row (2) * number of row - 1
c, 58 seats
Step-by-step explanation:
a, Because the seats is increasing by 2 after every row after row 1
Therefore, row 2 = row 1 + 2 = 30+2 = 32 seats
Row 3 = Row 2 + 2 =32+2 =34 seats
Row 4 = Row 3 + 2 = 34 + 2 = 36 seats
b, The explicit rule for the number of seats would be:
Row 1 = n
Row 2 = n + equidistant number of seats added each row (2) * (2-1) = n + 2
Row 3 = n+ equidistant number of seats added each row (2) * (3-1) = n+ 4
Row 4 = n + equidistant number of seats added each row(2) * (4-1) = n+6
etc.....
c, The number of seats in the 15th row would be = number of seat in the first row + equidistant number of seats added each row * 15 - 1 (first row)
= 30 + 2 * 14= 30 + 28 = 58 seats
Hope this help you :3
Answer:
c
Step-by-step explanation:
that's the answer dudnjdkdkd
1. <span>The figure is made up of a square and a triangle. Therefore, y</span>ou can solve this problem by applying the formula for calculate the area of a square and the formula for calculate the area of a triangle.
2. The area of the square (A1) is:
A1=(y)(y)
A1=y²
3. The area of the triangle (A2) is:
A2=(y)(4)/2
4. When you simplify it, you obtain:
A2=2y
5. Finally, you obtain the area of the figure (A) when you sum the area of the square and the area of the triangle:
A=A1+A2
A=y²+2y
The product of three and a number means 3 times x.
6 less than a number means you subtract 6.
3x - 6
Hope this helps!
