A brick staircase has a total of 17 steps, with the first step requiring 118 bricks. Each successive step requires 5 less bricks than the prior one. How many bricks are required to build the staircase?

1326 bricks

Step-by-step explanation:

Step 1 will have 118 bricks

Step2 will be 118-5=113 bricks

Step 3 will have 118-(2*5)=108 bricks

Step 17 will have 118-(16*5)=38 bricks

The number of bricks in first step is given as 118+5(n-1) where n starts as 1

At any step n, the number of bricks will be 118+5(n-1)

The sum of the bricks can be found by

Sum=½n(n(1)+n(17))

Since n(1)=118 bricks and n(17) is 38 bricks

Sum=½*17(118+38)=1326 bricks

0.50 , 0.75

step-by-step explanation:

step-by-step explanation:

a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 2 times the age of the child?

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this needs to be the answer format, or else your answer is incomplete.

if the number of years is x, then the equation is

in __ years