Answer:
D
Step-by-step explanation:
Lateral SA = area of the 4 triangles
Formula to be used :-
Area (triangle) = 1/2bh
=> 4 x 1/2 x 9 x 12
=> 108 x 2
=> 216 cm²
Total SA = LSA + area of the square
Formula to be used :-
Area (square) = side length x side length
=> 216 + 9 x 9
=> 216 + 81
=> 297 cm²
<u>The correct option is (D).</u>
Answer:

Step-by-step explanation:
In order to find the equation to this line, we need to note that we see two points on this graph. Using these two points, we can use them to find the slope of the graph and use one to find the y-intercept.
We know that the slope of a line is defined by
(change in y / change in x). Therefore, we can use our two points that we know - (-5, 2) and (3, 4) to find the slope.
The change in y is
, and the change in x is
. Therefore, our slope is
.
Now that we know our slope, our equation in slope-intercept form looks something like this.

However, we still have b to solve for. We can solve for this by substituting a point we already know into the equation. Let's substitute (3, 4) inside.
So now we know that the y-intercept is
. Plugging that into our equation finishes it off, leaving our final equation to be
.
Hope this helped!
Answer:
D is true
Step-by-step explanation:
Hope it helps!
Answer:
≈ 5
Step-by-step explanation:
<u><em>You can use the Pythagorean Theorem to solve this:</em></u>

<u><em>Now plug in the numbers into the formula:</em></u>

36 +
= 64
<u><em>Subtract 36 from both sides:</em></u>
36 +
= 64
-36 -36
_________
= 28
<em><u>Square both sides:</u></em>

b = 5.29
b ≈ 5
Answer:
d) 9 years
Step-by-step explanation:
let present age as 'x'.
then, x=2x-3(x-6)
x=2x-3x+18
x= -x+18
2x=18
x=18/2
x=9