Answer:
<u>1.14 m²</u>
Step-by-step explanation:
- Area (shaded) = Area (quarter circle) - Area (triangle)
- Area (shaded) = πr²/4 - 1/2r²
- Area (shaded) = 3.14 x 4 / 4 - 1/2 x 4
- Area (shaded) = 3.14 - 2
- Area (shaded) = <u>1.14 m²</u>
X+y=28
xy=7
xy=7
divide both sides by x
y=7/x
sub 7/x for y in first equation
7/x+x=28
times both sides by x
7+x^2=28x
minus 28x from both sides
x^2-28x+7=0
use quadratic formula
if
ax^2+bx+c=0
x=
x=
x=
sub for y
y=7/x
y=
the reciprocals are
and
times first one by
and second by 7/7
evaluate the plus and minus yourself please, my head hurts
The equation which is supposed to help you is this one:
a^2 - b^2 = (a+b) (a-b)
So, what we need to do here is apply this equation:
k^2 - 9h^2 =
k * k - (3h)^2 =
(k + 3h) (k-3h)
The correct answer is C.
The definition if a function is a relation or expression with two or more variables in it.
So, therefore, relation 1 is a function for using "d,c,n,z" to represent the other words using two or more variables.
Relation 3 isn't a function bc there are no variables included.
Ans=0.7 , 31/40 , 78%
(0.700 , 0.775 , 0.780)
#maybe XD