Answer:
39 DVDs
Step-by-step explanation:
45% of 260
45/100 ×260
117 DVDs of science
40% of 260
40/100 × 260
104 DVDs of history
So from total subjects science and history
260 - (104+117)
260 - 221
39 DVDs of other subjects
In an easiest way 40 + 45
85% of science and history
So 15 % of other subjects
15/100 × 260
39 DVDs
This is an arithmetic sequence, since it's pattern is +4.
n1 = 1
d = 4
n = 1 + (n-1)(4) <-------------- This is the formula for the nth term of the sequence.
Answer:
All the values of k are -4, -3, -2, -1, 0 , 1
Step-by-step explanation:
Given;
- 4≤ k ≤ 1
The range of value of k is between -4 and 1.
These values are listed as follows;
k = -4, -3, -2, -1, 0 , 1
Therefore, all the values of k are -4, -3, -2, -1, 0 , 1
Elga's age = x
Alvin's age = x + 7
x + x + 7 = 97.
Simplify the left side of the equation
2x + 7 = 97.
Subtract 7 from each side
2x = 90.
Divide each side by 2
x = 45
Since x is equal to Elga's age, Elga is 45 years old
