Answer:
5*3=k, k=15
Step-by-step explanation:
y=k/x is the inverse variation equation
5=k/3
k=15
Answer:
I will show you how it is done the EASY WAY
Step-by-step explanation:
Step 1: Desmos
Step 2: Plug-in eqaution
Step 3: See if the parabola is facing up or down
Step 4: Faces down so vertex is -3,-7
Step 5: Max value= vertex x-value
Step 6: Almost there!! -3 is yr x-value
Step 7: FINALIZE IT: Max value is -3 A
Answer: x = -7
Step-by-step explanation:
4(1 - x) + 2x = -3(x + 1)
First, use distributive property
4 - 4x + 2x = -3x + -3
Combine like terms
4 - 2x = -3x - 3
Add 3x to each side
4 + x = -3
Subtract 4 from each side
x = -7
Answer:
Simple random sampling
Step-by-step explanation:
In this example, the teacher takes a random 40-student sample from the whole population of students. The fact that the students are alphabetically order does not interfere in the sampling process since students are picked at random. Therefore, the teacher applied the simple random sampling method.
This method provides an unbiased representation of the population.
From the second equation y=-1-x so we can write -2x²+3x-1=-1-x.
So -2x²+4x=0, 2x(-x+2)=0, therefore x=0 or 2 and the corresponding y values are -1 and -3.
We can write the answers as ordered pairs (0,-1) and (2,-3).