Answer:
a^2-b^2=(a+b)(a-b) where a=4x and b=5. (4x+5)(4x-5)
Step-by-step explanation:
Since both terms are perfect squares,factor using the difference of squares formula
11+11+4+4=30 so the answer is thirty
Answer:
10x-20
Step-by-step explanation:
5(2x-4)
5x2=10
5x4=20
Answer:
160 days
Step-by-step explanation:
If it takes 8 days with 10 women to make 3 tree houses, then the rate of woman per tree house is 3/80. Multiplying this by 6 and dividing by 36, you get a rate of 1/160 or 160 days. Hope this helps!
To calculate the slope of any graph y = mx + b is usually used
