These equations seem tricky, but aren't as hard as you think. Just solve it like you are regularly adding fractions.
Your common denominator is 9x + 9, so
1/(9x+9) = 36/(9x + 9) - (5x + 5)/9
1 - 36 + 5x + 5 / 9x - 9
30x - 30/9x - 9
10x-10/3x - 3
10(x-1)/3(x-1)
10/3
Hope this helped!
Isaiah walks 3 miles due north, turns and then 5 miles due east. How far is he from his starting point?
5.8
A 10-foot ladder is leaning against a wall. The base of the ladder is 2 feet from the base of the building. How far up the building does the ladder fall?
9.8
A television is measured by its diagonal. If the height of a 70 inch television is 42 inches, what is the width?
56
An equilateral triangle has a side length of 6. What is the height of the triangle?
5.2
A right triangle has a height of 12 and a width of 5. How long is the diagonal?
13
A string is tied to the top of a plant to keep it stabilized. The plant is 5 feet tall and the string is connected to the ground 2 feet from the base of the plant. How long is the string?
5.4
x+a=3/4
Move a to the other side. Sign changes from +a to -a.
x+a-a=3/4-a
x=3/4-a or x=-a+3/4
Answer: x=3/4-a or x=-a+3/4
Answer:
3.60
Step-by-step explanation:
Kahn Academy
In a triangle, the nomenclature is that a variable side a is opposite of the angle A. we can use the cosine law to determine the value of cosine A.
a2 = b2 + c2 -2bc cos a25 = 36 + 64 - 2*6*8 * cos acos a = 25/32
