Answer:
(a) 0.7
(b) 4.9
Step-by-step explanation:
If z is a linear function of x and y and the slopes in the x and y directions are 3 and 2, respectively, z can be written as:
Where 'c' is a constant value.
(a) A change of 0.2 in x and 0.1 in y produces the following change in z:
(b) Applying the point x=7, y=4, z=5 to the general equation gives us the value of 'c':
For x=7.1 and y=3.8, the value of z is:
Answer:
SA = 18.2+10.4h
59.8yd²
Step-by-step explanation:
Surface area of a 3D shape is the sum of the areas of its faces. A rectangular prism is made of 2 rectangles that make the top and bottom, plus four equal, larger rectangles.
surface area = 2(small rectangles)+4(large rectangles)
surface area = 2(3.5*2.6)+4(2.6h)
SA = 18.2+10.4h
SA = 18.2+10.4h
SA = 18.2+10.4(4)
SA = 18.2+41.6
SA = 59.8yd²
Answer:
zero
Step-by-step explanation:
The line is a horizontal line
Horizontal lines are of the form y= constant
This means they have zero slope
Let x be the number of minutes for
his normal walk
On the way to the airport, for the
2/5 (or 40%) of his route, his speed is twice faster. Hence, the number of x
should be divided to 2. The rest of the route (60%) was on his normal pace. The
total minutes is 6. The equation is:
0.4(x÷2) + 0.6x = 6
<span>Solving for x, the number of
minutes for his normal walk is 7.5 minutes.</span>