Answer:
a₆ = 13x + 31
Step-by-step explanation:
The nth term of an arithmetic sequence is
= a₁ + (n - 1)d
Here a₁ = 3x + 1 and d = 2x + 6 , then
a₆ = 3x + 1 + 5(2x + 6)
= 3x + 1 + 10x + 30
= 13x + 31
The scale of the first map is 1cm : 40 km
The scale of the second map is 1 cm : 1.25 km
The scale of the third map is 1 cm : 12.50 km
A scale drawing is a smaller image of an original image. The map is a scale drawing.
Scale of the drawing = original dimensions / dimensions of the scale drawing
Scale of the first map : 120 / 3 = 40
The scale is 1cm : 40 km
Scale of the second map : 4 / 3.2 = 1.25
The scale is 1 cm : 1.25 km
Scale of the third map: 50 / 4 = 12.5
The scale is 1 cm : 12.50 km
To learn more about scale drawings, please check: brainly.com/question/980463?referrer=searchResults
Answer: the answer is -32
Step-by-step explanation:
first step: multiply 5 by -18
5 x -18= -90
then divide -90 by three!
-90/3 = -30!
finally, subtract 2 from -30
-30 - 2 = -32
i hope this helped!! :)
The answer to this question is Option C.
As stated in the problem, both programs being Math Master (75% to 87%) and Excel (73% to 81%) increased, therefore, meaning they are both effective as the average test scores increased. However, Math Master had a higher average test score increase compared to Excel, meaning it is even more effective.
Hope this helps :)