Each next term is being multiplied by 5. Assuming there are only 4 terms to the sum, you have
Answer:
check attached image :)
Step-by-step explanation:
First find 120-45 and see what you have left. Then get that number and divide it by 15 to get the answer.
120-45=75
75÷15=5
Audrey can only afford 5 lessons
Answer:
Length= 30 in
Width= 10 in
Step-by-step explanation:
Let the width of the rectangle be x in.
Length of rectangle
= 3 (width)
= 3x
Perimeter of rectangle= 2(length) +2(width)
80= 2(3x) +2(x)
80= 6x +2x
8x= 80 <em>(</em><em>simplify</em><em>)</em>
x= 80 ÷8 <em>(</em><em>÷</em><em>8</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
x= 10
Thus width of rectangle= 10 in
Length of rectangle
= 3(10)
= 30 in