Pls help i already tried to solve

Step-by-step explanation:

49 = -16t^2 + 56t

-16t^2 + 56t -49 = 0

(-4t +7) (4t -7) = 0

-4t+7 =0

t = 7/4

is there a question here?

step-by-step explanation:

perimeter = 10 +  √10  units

explanation:

first, we will need to get the length of each line using the distance formula which is as follows:

distance = 

1- length of ab:

ab =   = 5 units

2- length of ac

length of ac is the same as ab = 5 units

3- length of bc:

bc =   =  √10  units

now, we can get the perimeter by adding the side lengths as follows:

perimeter = 5 + 5 +  √10

perimeter = 10 +  √10  units

hope this : )

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