Bob has two weekend jobs. last weekend he made a total of $77 after working as a cashier for 5 hours and delivering newspaper for 4 hours. this weekend he made $78 working at his cashier job for 6 hours and delivering newspaper for 3 hours. how much does he get paid per hour at each job?

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.