Answer:
190 chairs
Step-by-step explanation:
-This is an arithmetic progression with the first term a=10, the common difference is d=2 and the number of terms n=10.
-The sum of n terms in the progression can be calculated as follows:
Where
is the sum of the progression's terms.
are the first and last terms of the progression.
#We calculate as below:
#We then substitute to calculate the sum of the terms:
Hence, 190 chairs are needed for the 10 rows.
Answer:
19.48 m
Step-by-step explanation:
The formula that is used to find arc length is:
arc length = 2πr
In this question, r = 9m and the angle (θ) = 124°. Substitute the values into the formula.
arc length = 2 × π × 9 ×
= 2 × π × 9 × 0.3444
= 19.48 m
Answer:
B. 3x -7y < -21
Step-by-step explanation:
For this problem, a quick way to the correct answer choice is to determine on which side of the y-intercept the equation tells you the solution lies. That is ...
- set x=0
- divide by the coefficient of y
Doing this transforms the answer choices to ...
A: y < 3
B: y > 3
C: y > -3
D: y < -3
The graph clearly shows the solution space on the y-axis is in the region y > 3, matching choice B.
Answer:
Step-by-step explanation:
i dont know man sorry
-40-10x (I think, sry if it’s wrong)