The function that describes the graph above looks like this:
The rate of change at a particular moment is the same as the value of the derivative<span> at a particular </span>point. So, let's find a derivative of your function:
Now, let's replace
variable with given value
:
Solution:t<span>he instantaneous rate of change at
</span> is
-4.
2x-y=8...(1)
x+y=7....(2)
from (2)
y=7-x....(3)
put (3) into (1)
2x-(7-x)=8
2x-7+x=8
2x+x=8+7
3x=15
x=5.....(4)
put (4) into (2)
x+y=7
5+y=7
y=7-5
y=2
Hope it helps c:
Step-by-step explanation:
soln
given
y=2x+3 -----(i)
y=-x-9 ------(ii)
now, putting value of equation (i) in (ii)
y= -x-9
or, 2x+3 = -x-9
or, 2x+x = 9-3
or, 3x = 6
or, x = 6/3
or, x = 2
again,
y = 2x+3
or, y = 2×2+3
or, y = 7
therefore, value of X and Y are 2 and 7 respectively.
Answer:
10
Step-by-step explanation:
Addition 2/9+7/9=1. 1+7+2=10
72 = 1/2 (16x) because the area of a triangle is 1/2 (bh) and the height is x and the base is 16 and the area = 72 so solve for x to get base.