X is the number of tasks
It says Shelly earned 90 points on each task. So the equation shows Shelly getting 90 points times the number of tasks (x) that she did.
Answer:
The value of y given the values of x and z in the question is -734.85
Step-by-step explanation:
This is a joint variation question.
First, we are made to know that y varies jointly as x and z.
The equation for this can be written as;
y = k * x * z
Where k is the constant of proportionality.
Let’s calculate k first.
117 = k * (-3) * (-11)
33k = 117
K = 117/33 = 3.55
Now, we proceed to get what y is when x = -9 and z = 23
Let’s plug these values into the initial equation written.
y = k * x * z
We use the value of k calculated above;
y = 3.55 * (-9) * (23) = -734.85
This type of parabola opens either to the left or to the right. The negative makes it open to the left.
Maria had 13 points and jane had 8 points
Answer:
6 and 20
Step-by-step explanation:
20-7=13
