110 Étudier un phénomène périodique a. Deux bateaux partent de Marseille l'un tous les
7 jours, le second tous les 12 jours. Ils partent tous les
deux le 1er mars.
À quelle prochaine date partiront-ils tous les deux
ensemble de Marseille ?
b. Le 1er mars, un 3e bateau part également de Marseille.

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation:

i agree because i see the other persons thinking is clear

look at the picture i have filled out a table for it. hope this .

third choice down

step-by-step explanation:

the first inequality is based on the number of adults and campers, and the second inequality is based on the cost of feeding both the adult and the camper.

we know that there is room for 525 people max.   it's ok to have less than 525, but it's not ok to have more than 525, so the inequality is less than or equal to.   the number combination of adults (x) and campers (y) cannot exceed this 525 max.   therefore:

x + y ≤ 525

now we talk about cost.   it costs $9 to feed one adult, so depending upon the number of adults you have (x) depends upon how much it will cost to feed that number of adults.   same with the campers, who cost $5 to feed.   the adults can be represented by 9x and the campers can be represented by 5y.   since the budget cannot exceed 1,200, the second inequality is:

9x + 5y ≤ 1200