Answer:
Step-by-step explanation:
From the information given,
Mark: 6,7,8,9,10
frequency:5,4,7,10,4
a) Range = highest mark - lowest mark
Range = 10 - 6 = 4
b) The number of students in the group is the sum of the frequency. Therefore,
Number of students = 5 + 4 + 7 + 10 + 4 = 30 students
c) Mean mark = (mark × frequency)/total frequency
[(6 × 5) + (7 × 4) + (8 × 7) + (9 × 10) + 10 × 4)]/ 30
Mean mark = (30 + 28 + 56 + 90 + 40)/30 = 244/30
Mean mark = 8.1
F(x) = x + 6
reflected x axis
should be
g(x) = -(x + 6) = -x - 6
answer is D. last one
g(x) = -x - 6
Answer:
Option C - Multiply the 1st equation by 2
Step-by-step explanation:
To find : Which step could be completed in order to prepare the system of equations below for the elimination method?
Solution :
1st equation:
2nd equation:
For elimination method,
We eliminate the y by multiplying 1st equation by 2 and add by 2nd equation.
i.e. 1st equation became
Add with 2nd equation,
Substitute in (1),
Therefore, the step could be completed in order to prepare the system of equations below for the elimination method is option C.
Answer:
4. Ethan is correct because the absolute value bars are grouping symbols so first you must subtract. 7 minus 3 = 4, and StartAbsoluteValue 4 EndAbsoluteValue = 4
Step-by-step explanation:
Claim :
|7 - 3| = 4
The absolute sign or meaning means dropping the negative sign pertaining to a certain calculation, by doing this, if the result of the question or expression is negative, the negative sign is dropped and the number is being treated as positive.
Therefore,, the expression ; |7 - 3| = 4 is corect.
sameStep-by-step explanation: