It's 21 square units. If you map it on a complex plane (x-axis is real numbers, y-axis is imaginary numbers) you'll see that the sides of the rectangle is 3 and 7 which multiply to 21.
Answer:
option one :)
20 characters blah blah blah
{0.15x+0.06y=930 //*20
{x+y=8000 //*3
{3x+1.2y=18600
-
{3x+3y=24000
-1.8y=-5400
y=3000
x=8000-3000=5000
Planner need to invest $5000 with 15% rate and $3000 with 6% rate
Solution :
The null and alternative hypothesis is given by
Assume that the level of significance, α = 0.05
The t-test statistics is, t = 1.484
Degree of freedom :
df = n - 1
= 14 - 1
= 13
The P-value is given by
P-value = 2P (T>|t|)
= 2P(T>|1.484|)
= 2P(T>1.484)
= 2(=T.DIST.RT(1.484,13))
= 0.05
Answer:
there's a minimum at (4, -1)
Step-by-step explanation:
Please use " ^ " to denote exponentiation: y= x^2 - 8x+ 15.
To "complete the square," take half of the coefficient of x (which is -8). Square this result, obtaining 16.
In y= x^2 - 8x+ 15, add 16, and then subtract 16, between -8x and +15:
y = x^2 - 8x + 16 - 16 + 15
This becomes:
y = (x - 4)^2 -1
Reading off the coordinates of the vertex, we get (4, -1). Because the coefficient of the (x - 4)^2 term is positive, we know .there's a minimum at (4, -1)