A^2 - b^2 = (a - b)( a +b);
<span>cos^4x-sin^4x =( cos^2x + sin^2x )( cos^2x - sin^2x) = 1* cos2x = co2x.</span>
Answer:3 & 4
Step-by-step explanation: those are the two with multiplication/division
(x+2)^2+(y+5)^2=1
...........
It's not often that you find rectangular prism-shaped rocks with these dimensions. Rather, we assume that the rock would fit into a box with the given dimensions, but not actually fill every corner of the box. The maximum possible volume of this rock would be (1.9 cm)(1.5 cm)(3.8 cm) = 10.83 cm^3; the actual volume is most likely less.
Answer: 90 inches
Step-by-step explanation:
Hi, to answer this question we have to apply the next formula:
Volume of a rectangular prism =area of the base x length
Area of the base is the area of a triangle:
Area of a triangle = base x height x 1/2
Replacing with the values given:
A = 4 x 3 x 1/2 = 6 in2
Back on the volume formula:
V = A x h = 6 x 15 = 90 cubic inches
Feel free to ask for more if needed or if you did not understand something.
