Answer:
Step-by-step explanation:
This question utilizes combining like terms and common denominators. First you have to convert both terms including "a" to have a denominator of 8. You would do this by multiplying both the numerator, and the denominator by the same value. This value in the case of 
would be 2, and in the case of 
the value would be 2. This would result in the equation: 
. Then simply combine like terms to get your final answer.
No it isn't because 2/5=0.4
2x2=4
3x3=9
5x5=10
Because with powers it is the number times itself not the number times the power. So if i had 5 to the third power it would be 5x5x5=? 5x5=10x5=50 therefore 5 to the third power is 50
I hope this helps!
The roof will be in the shape of an isosceles triangle with a base length of 42 m and two sides that are 27 m. The two 27 m beams will have the same angle of elevation since they have to might in the middle.
So to find the angle of elevation, we can split the roof in half vertically to create a right triangle. The base will now be 21 m, and the hypotenuse will be 27 . Now we can use a trigonometry function to solve for the angle. We know the hypotenuse and the side adjacent to the angle, so we can use cosine.
The answer is 38.9 degrees
