We know that each row would require 62 bricks, and considering that the wall will have multiple rows, we will be multiplying 62 by the number of rows. Since the wall has 10 rows, Nick has to use the 62 bricks 10 times (since 1 row requires 62 bricks, he would have to build that 1 row 10 times.)

If we think about the operation of multiplication, we can write “62 ten times” as 62 x 10 (or, when calculated, 620 bricks).

6 0

3 years ago

Can someone help me out with this?

dexar [7]

Answer:

-7.5x -12.5, x < -1
7.5x +2.5, x ≥ -1

Step-by-step explanation:

The absolute value function changes slope at its vertex. Here, that vertex is translated to x = -1. To the left of that point, the function is equivalent to one that negates its argument:

|x| = -x . . . for x < 0

|x| = x . . . for x ≥ 0

y = -7.5(x +1) -5 = -7.5x -12.5

y = 7.5(x +1) -5 = 7.5x +2.5

This means we can write the piecewise function as ...

$y=\begin{cases}-7.5x-12.5,&\text{if }x$

4 0

2 years ago