Answer:
z = 42
Step-by-step explanation:
The question can be answered in 2 steps as follows:
Step 1: Calculation of the constant of the variation
The equation for the joint variation can be given as follows:
z = cxy ................... (1)
Where;
z = 60
c = constant = ?
x = 5
y = 6
Substituting the values into equation (1) and solve c, we have:
60 = c * 5 * 6
60 = c * 30
c = 60 / 30
c = 2
Step 2: find z when x = 7 and y = 3
Since from Step 1 c = 2, we now use equation (1) and substitute the values into it to find z as follows:
z = 2 * 7 * 3
z = 42
2 42/100 turn it to a fraction
-3/5 they have opposite slopes so they would never touch but are parallel.
Sum of -2x^-3x is -5x and sum of x^+7x is 8x hope this helps answer my question please !!
Answer:
Step-by-step explanation:
Correct option is
A
[0,1]
Given :
f(x)=
(x−1)(3−x)
=
−x
2
+4x−3
=
−x
2
+4x−4+1
f(x)=
1−(x−2)
2
maximum value at f(x) will be '1'
when (x−2)=0
so, f
max
=1
minimum when (x−2)
2
=1
x−2=±1
x=3 or x=1
so, minimum =
1−1
=0
so Range = [0,1]→ option 'A'
