Answer:
She'll have to pay 4.8USD to get the bike
Answer:
21
Step-by-step explanation:
simply
<em>the square represents 90 degrees and 90 - 61 is 21</em>
Answer:
<em>s</em><em>o</em><em>r</em><em>r</em><em>y</em><em> </em><em>i</em><em> </em><em>d</em><em>o</em><em>n</em><em>t</em><em> </em><em>k</em><em>n</em><em>o</em><em>w</em><em> </em><em>w</em><em>h</em><em>a</em><em>t</em><em> </em><em>a</em><em>n</em><em>s</em><em>w</em><em>e</em><em>r</em><em>.</em><em>.</em>
Answer:
21mm
Step-by-step explanation:
The formula for solving the area of a rhombus is :
, where x and y are two intersecting diagonals.
In this case, we are given both values, thankfully. 6 and 7 are to be replaced with x & y. Now, the rest you have to do is simple math.

The area of the rhombus is 21mm.
Answer:
(a) y = 9/4x -1/4
(b) (-2, -2), (-2, 2)
(c) see below
Step-by-step explanation:
(a) The derivative can be found from ...
2y·y' = 3x² +6x
At (x, y) = (1, 2), this is ...
4y' = 9
y' = 9/4
so the equation of the tangent is ...
y = (9/4)(x -1) +2
y = (9/4)x -1/4
__
(b) At y' = 0, we have ...
0 = 3x² +6x = 3x(x +2)
This says y' = 0 at x=0 or x=-2. (x = 0 is an extraneous solution.)
At x = -2, we have ...
y² = (-2)³ +3(-2)² = -8+12 = 4
y = ±2
So, the horizontal tangent points are (x, y) = (-2, ±2).