Answer:
width = 9 cm
Step-by-step explanation:
the area of a 12cm square is 144
16w = 144
x = 9
<h3>
The error is -6 </h3>
Step-by-step explanation:
If a line passes through the points 
and 
Then the equation of line is
Here given points are (-3,-7.5) and (2,-5)
Then the equation of the line is
⇔
⇔2.5(x+3) = 5(y+7.5)
⇔(x+3)= 2(y+7.5)
⇔x+ 3 = 2y +15
⇔2y = x+3-15
⇔y = 
⇔y = 0.5 x -6
The error is -6
Answer:
At a point when r = 6 ft
The rate of change of Area with time is given as
(dA/dt) = 36π = 113.1 ft²/min
Step-by-step explanation:
Area of a circle, A = πr²
A = πr²
(dA/dt) = (dA/dr) × (dr/dt)
(dA/dr) = 2πr, (dr/dt) = 3
(dA/dt) = 2πr × 3 = 6πr
At a point when r = 6 ft
(dA/dt) = 6πr = 6π × 6 = 36π = 113.1 ft²/min
Answer:
For E, each angle is 60° because its an equilateral triangle.
F is 45° for x, 135° for y, lastly z is 22.5°
Step-by-step explanation:
She made a sign error when multiplying and should have had 256 as a final answer.
