Given:
1 pack = 5 pencils and cardboard.
1 pack must be between 60 grams and 95 grams
60g < x < 95g ; where x represents 1 pack.
Card board: 15 grams.
95g - 15g = 80g maximum total weight of 5 pencils
80g / 5 = 16g maximum weight of a single pencil
60g - 15g = 45g minimum total weight of 5 pencils
45g / 5 =9g minimum weight of a single pencil
9 < x < 16 ; where x represents a single pencil in the pack.
Answer:
d
Step-by-step explanation:
5x plus 15 is not the same as the equation
Find your formula.
Tn=-5n+17
Execute the formula for the wated term.
Tn=-5(33)+17
Tn=-148
The 33rd term of the sequence is -148.
Answer:
C. Better measure of center: the median
D. Better measure of spread: the Interquartile range
Answer:
a₅ = 40
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given a₇ = 25 and a₃ = 55 , then
a₁ + 2d = 55 → (1)
a₁ + 6d = 25 → (2)
Subtract (1) from (2) term by term to eliminate a₁, then
4d = - 30 ( divide both sides by 4 )
d = - 7.5
Substitute d = 7.5 into (1)
a₁ + 2(- 7.5) = 55
a₁ - 15 = 55 ( add 15 to both sides )
a₁ = 70
Thus
a₅ = 70 - 7.5(4) = 70 - 30 = 40
