Answer:
What do you need help with
Answer:
C
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = bh ( b is the base and h the perpendicular height )
The triangle is equilateral , since 3 angles = 60°
Then base AB = 12
Find height CD using the sine ratio in the right triangle ( there are 2 )
sin60° = = = = ← exact value of sin60° ( cross- multiply )
2CD = 12 ( divide both sides by 2 )
CD = 6
Then
A = × 12 × 6 = 6 × 6 = 36 units² → C
The equation for a circle is (x-h)^2+(y-k)^2 = r^2
The h part in with the x is your x coordinate and the k part in with the y is your y coordinate. The r stands for the radius but be careful you have to square it.
so:
(x-(4))^2 +(y-(6)^2 = 16
I like to add the parenthesis around the "plugged in" numbers to help me remember negatives if I have any. <span />
Answer:
Step-by-step explanation:
We know that for two similar matrices and exists an invertible matrix for which
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∴
Also
and
∴
so,
Money= how many hours
$4= 1h
$8=2h
$12=3h
$16=4h
$20=5h
$24=6h
l hope that helps :)