Answer:
Part 1) The y-intercept is the point
Part 2) The x-intercepts are the points
Step-by-step explanation:
we have
This is a vertical parabola open upward
step 1
Find the y-intercept
we know that
The y-intercept is the value of y when the value of x is equal to zero
so
For x=0
The y-intercept is the point (0,-3)
step 2
Find the x-intercepts
we know that
The x-intercept is the value of x when the value of y is equal to zero
so
For y=0
solve for x
Adds 3 both sides
take square root both sides
so
The x-intercepts are the points
The third one is correct so it would be C.
Just substitute X and Y into the question.
Answer:
Step-by-step explanation:
9 * 9 * h = 1620. Isolate the variable. h = 20. The equation would be 9*9*20 or 9^2*20.
Answer:
B; 3/4
Step-by-step explanation:
slope = rise / run
the line goes up, so it is a positive slope. it goes up 3 points, and goes right 4 points.
Answer:
60cm^2
Step-by-step explanation:
The formula for the area of a trapezium is :
To work out the area of the trapezium you would first have to add the lengths at the top and bottom (a and b) which is 9+15, this gives you 24cm.
The next step is to divide the value of 24 by 2, this gives you 12cm.
The final step is to multiply the value of 12cm by the height of 5, this gives you 60cm^2. This is because if you were to substitute the values into the formula you would get the same answer.
1) Add 9 and 15.
2) Divide 24 by 2.
3) Multiply 12 and 5.