Answer:
The cooperative has to make 70 shirts per day.
Step-by-step explanation:
Let x shirts be the number of shirts in a day the cooperative has to make to fulfill his plan.
In 8 days, it will make 8x shirts.
Everyday, overfilling the norm by 10 shirts, the cooperative makes x + 10 shirts in a day.
The cooperative fulfilled his plan in 1 day less, so it spent days and made shirts.
The number of shirts is the same, so
The cooperative has to make 70 shirts per day.
Answer:
S₁₅ = 645
Step-by-step explanation:
The sum to n terms of an arithmetic sequence is
= [ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Using the nth term formula = 5n + 3 , then
a₁ = 5(1) + 3 = 5 + 3 = 8
a₂ = 5(2) + 3 = 10 + 3 = 13 , then
d = a₂ - a₁ = 13 - 8 = 5
Thus
S₁₅ = [ (2 × 8) + (14 × 5) ]
= 7.5( 16 + 70)
= 7.5 × 86
= 645
Answer:
Every number will have a 0 or 5 in its ones place
Step-by-step explanation: