Answer:
She must score 90 points
Step-by-step explanation:
Find the average of the first 2 tests
76 + 80 = 156
Divide the sum of the first 2 tests by how many tests there were
156 ÷ 2 = 78
Multiply 82 by 3
82 x 3 = 246
Subtract 156 from 246
246 - 156 = 90
Add all the numbers together to get the average
90 + 80 + 76 = 246
246 ÷ 3 = 82
Hope this helps!
Answer:
x intercept:
5
y intercept: 50
Step-by-step explanation:
- let us plot the graph for better understanding.
- we will represent f(x) on y-axis so, the equation will become: y= 50-10x
- the equation is of the form : y=mx+c
[where, m: slope of the line
c : y-intercept ]
- meaning of x intercept: the x-coordinate of the point where the line meets x-axis
-
meaning of y intercept: the y-coordinate of the point where the line meets y-axis
- the line y= 50-10x has slope of -10 and it passes through (0,50)
[ (0,50) lies on the line only. substitute and check if the point satisfies the above line equation]
- by seeing the graph in the attachment and by the definitions given above, we can say that,
x intercept: 5
y intercept: 50
6x +30 -3x +6 =12x +18
3x +36 =12x +18
3x-12x = 18 -36
-9x = -18 | -1
9x =18
x= 18/9
x=2
Answer:
70.76
Step-by-step explanation:
Seventy and seventy-six hundredths
Seventy = 70
And = decimal .
Seventy-six hundredths= 76
Answer:
the only correct answer is c