Answer:
C. 2
Step-by-step explanation:
-11- (-13)
=-11+13 [negative plus negative =positive ;so, -(-13)=+13 ]
=2
Answer:
B. 1050
Step-by-step explanation:
With receiving 70% of the 1,500 votes, Mr. Jones overall ended up receiving 1050 votes.
70% of 1500 is equal to (70 × 70) / 100 = 1050.
Answer:
1/10
Step-by-step explanation:
Answer:
99
Step-by-step explanation:
Given:
A student has earned the following scores on four 100-point tests
65 73 81 82
Average grade of total five test = 80
Question asked:
What score must the student earn on the fifth and last 100-point test of the grading period to earn an average test grade of 80 for the five tests ?
Solution:
Let score earned in fifth test =
By using average formula:
Now, according to the question
Average grade of total five test = 80
Sum of all observation by tatal num. of observation = 80
=
Multiplying both side by 5
Subtracting both side by 301
Therefore, he must score 99 to earn an average test grade of 80 for the five tests.
Step-by-step explanation:
Ans 6 Use Pythagoras theorem...
Hypotneuse²=Base²+Height²
6²=4²+H²
36-16=H²
20=H²
√20=H
√2×2×5=H
2√5 = H....
hope it helps