Answer:97 rods
Step-by-step explanation:
The number of steel rods for 95% confidence level


E=3

Substituting values


Thus 97 rods is tested
X + x - 1 + 43 = 180. Solve for x. 2x +42 = 180 and 2x = 138. Therefore, x = 69. If x = 69, then angle H is 68 and angle G is 69. 68 + 69 + 43 = 180.
By the general application of cumulative property of addition :
x + y = y + x
For sure
Answer: Yes, Number of students who study French is greater than number of students who study Japanese.
Step-by-step explanation:
Since we have given that
Number of high school students study Japanese ≥ 100
Percent of high school students who study French also study Japanese = 4%
If the Percent of the students who Japanese also study French = 10%
So, our equation becomes

With the help of ratio, we get that
Number of students who study French is greater than number of students who study Japanese.
Hence, Yes, Number of students who study French is greater than number of students who study Japanese.