Answer:
She descended 2 miles
Step-by-step explanation:
Answer:
Step-by-step explanation:
(x₁ , y₁) = (-4, 1) & (x₂ , y₂) =(-2 , -5)
![Slope =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\\\=\dfrac{-5-1}{-2-[-4]}\\\\\\= \dfrac{-6}{-2+4}\\\\\\= \dfrac{-6}{2}\\\\\\= - 3](https://tex.z-dn.net/?f=Slope%20%3D%5Cdfrac%7By_%7B2%7D-y_%7B1%7D%7D%7Bx_%7B2%7D-x_%7B1%7D%7D%5C%5C%5C%5C%5C%5C%3D%5Cdfrac%7B-5-1%7D%7B-2-%5B-4%5D%7D%5C%5C%5C%5C%5C%5C%3D%20%5Cdfrac%7B-6%7D%7B-2%2B4%7D%5C%5C%5C%5C%5C%5C%3D%20%5Cdfrac%7B-6%7D%7B2%7D%5C%5C%5C%5C%5C%5C%3D%20-%203)
Answer:
56
Step-by-step explanation:
Complete question:
Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)
If z varies jointly with x, and y, this is expressed as;
z = kxy
If z=7 when x= 2, y= 2
7 = k(2)(2)
7 = 4k
k = 7/4
To get z when x= 4 and y = 8
z = kxy
z =7/4 (4)(8)
z = 7*8
z = 56
Hence the value of z is 56
Answer:
-12
Step-by-step explanation:
1. Create an Equation
-3-9
2. Solve
-3-9 <=== subtract -3 and -9 together to get your answer
-12
3. Check
-12+3 <=== create this equation or this one ===> -12+9 to check if we calculated correctly
-12+3= -9 -12+9= -3
this shows the answer is corrrect
