D is directly proportional to t2 When t = 4, D = 8 Find the positive value of t when D = 50

t = 10

Step-by-step explanation:

Proportions

D is directly proportional to t squared. This can be written as:

Where k is the proportionality constant. It can be calculated by substituting the given condition in the formula, when t=4, D=8:

Solving for k:

Thus, the proportional relationship is:

When D=50, the value of t can be found by solving for t:

Multiplying by 2:

Taking the square root:

The positive value of t is:

t = 10

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer