Answer:
12 correct answers
Step-by-step explanation:
Since in the main part she scores 8.3 points for each question she answers correctly, we can assume that the number of questions she answers correctly=a
Therefor, the total number of points she achieved in the math test in the main part alone can be expressed as:
Total score(main part)=8.3×a=8.3a points
She also solved a bonus question worth=11 points
Consider expression 1 below
The total score in the whole test=Total score in the main part+Bonus points, where;
Total score in the whole test=110.6 points
Total score in the main part=8.3a points
Bonus points=11 points
Substituting the values in expression 1:
8.3a+11=110.6
8.3a=110.6-11
8.3a/8.3=99.6/8.3
a=12
Number of correct answers in the main part=a=12
Answer:
9 seconds
Step-by-step explanation:
d=-16t²+vt+h
The water level will be at 0 level (distance = 0)
0 = 16t² - 90t - 486
8t² - 45t - 243 = 0
(t - 9) (8t + 27) = 0
t = 9 or t = -27
since time should be a positive number, so t = 9 second
Step 1: Add 1823 to both sides.
r−1823+1823=2312+1823=
r=4135
Answer is
Isolate the x.
Do the opposite of PEMDAS. Note the equal sign. What you do to one side, you do to the other.
2/3x - 2 = 7
Add 2 to both sides
2/3x - 2 (+2) = 7 (+2)
2/3x = 9
Multiply 3/2 to both sides to isolate the x
2/3x(3/2) = 9(3/2)
x = 9(3/2)
Multiply 9 with 3, and divide by 2
9 x 3 = 27
27/2 = 13.5
x = 13.5 is your answer
hope this helps
