Answer:
Option 4, 64 cm^2
Step-by-step explanation:
The polygon in the shape of a star can be made to be easier to find the area of by cutting it into triangle. For all the "point edges" of the star, we can cut them in half from the vertex to create two right-angled triangles at each edge.
The formula of the area of a triangle is bh/2: the height is given as 6cm, the base is 4cm /2 (after you cut it in half) and so is 2 cm. Since the edges can be cut into two, there are 8 right angled triangles at the edges in total.
To find the area of them:
A=8(bh/2)=8(2*6/2)=48 cm^2
However, we are still missing the part at the centre we haven't found the area of, the square. The area of a square is given by the square of the side length(4cm). Thus, A=4*4=16cm^2
Adding the areas of all the edges and the square:
48 + 16 = 64cm^2
Hence, the area of the polygon is 64cm^2
Answer:I assume the answer choices have pictures, so whichever one has the point (4, 1) would be correct since you are reflecting it over the x-axis.
Step-by-step explanation:
Answer:
x=-7
Step-by-step explanation:
Translate into an equation.
“A number” + -2 = -9
Assign “a number” to be “x”
X+-2=-9
Add 2 on both sides to even it out and get x
X-2+2=-9+2
X=-7
The number is -7. :)
Hello ShaveTheWhales!
If (1+2i) is a root, then (1-2i) will also as kown, be another root.
In Other Words to make it NOT complicated for you, <span>1-2i, 3i, and -3i are the other 3 roots.
</span>
Hope this AT LEAST Helps! Have A Wonderful Day! :)
To get r you have to divide:
-8r=64
----------
-8
You would divide by -8 because you are trying to get r by itself and make sure when you divide one side divide the other one:
-8r=64
---------- r= -8
-8
You would get -8 when you divide 64/-8 because a negative and a negative gives you a positive hope this helps a bunch :)))))