Factor the equation using difference of squares, which says that a^2-2ab+b^2=(a-b)^2.
a is 2 since the square root of 4 is 2 and b is 5 because the square root of 25 is 5.
Final answer: (2x-5y)^2
Answer:
1)B:63°
2)A:59°
Step-by-step explanation:
1.ABC is a right triangle at C then angle ACB=90°(right angle)
Angle CAB=27°(see the given)
measure of the angles in any triangle is 180°
then angle CBA=
measure of all the angles - (measure ACB+measure CAB)
=180°-(90°+27°)
=63°
2. Same explanation of angle B:
in the right triangle DEF: angle DEF=90°
angle D=31°(given)
Then measure of angle A=180°-(angle E + angle D)
=180-(90+31)=59°
The height would be 3 feet because it would be just tall enough to be waist level
The standard deviation of the set is 5.2
To find standard deviation, we take the square root of the variance.
