Students have organized a three-day walkathon to raise money for charity. the average walking speeds of four participants are given in the table below.
complete parts a to c.
name
1 walking speed
(miles per hour)
elijah
aubrey
mercedes
steve 1
a. write and solve an inequality to determine how many hours
ik at least 21 miles on day 1
the inequality can be used to determine this.
(type an inequality using x as the variable. use integers or
bers in the inequality)

a

step-by-step explanation:

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

what does x eaqual

step-by-step explanation:

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.