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y= 8 and the diagonal = 32

Step-by-step explanation:

In a rectangle, both diagonals are equivalent. Using this information we set up the diagonal equations of AC and BD to each other, and then solve for y.

5y+12=7y+4

We have to isolate the variable, so we get the like terms on one side.

8=2y

8÷2=4

y=4

knowing that y =4 helps with each diagonal.

5(4)+12

20+12=32

7(4)+4

28+4=32

just needed some points but try socratic

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)