David is attending a university where the tuition for one year is $12,500. he has $2,500 grant and earns $125 a week at a work-study job. if he can pay 25% of the remaining cost, his parents will pay for the rest. how many weeks does david need to work to pay 25% of the remaning cost?

20 weeks

Step-by-step explanation:

12,500- 2,500= 10,000

10,000 x .25= 2,500

2,500= 125x

2,500/125= 20

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

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