Answer:
its -9
Step-by-step explanation:
common difference =difference between 2nd term and first term
R + c=24
r=3c
3c+c=24
x=6
So there are 18 rock CDs
The product of side length and altitude is area. The area remains the same regardless of how you measure it.
From the first side and altitude,
.. area = side*altitude = (4.2 cm)*(3.6 cm) = 15.12 cm^2
From the second side and altitude
.. area = side*altitude
.. 15.12 cm^2 = side*(2.4 cm)
.. side = (15.12 cm^2)/(2.4 cm) = 6.3 cm
The perimeter is the sum of the measures of all sides. Opposite sides are of equal measure.
.. perimeter = 2*(4.2 cm +6.3 cm) = 21.0 cm
Answer:
b = {-16, 16}
Step-by-step explanation:
Yeah