Answer:
-3ab, -9x^2 -13x
Step-by-step explanation:
45a^4b^3 - 90a^3b/ 15a^2b
-45ab^2/15a^2b
-3ab
13) (x-7x^2) - (2x^2+14x)
-9x^2 -13x
Answer:
1. 40 2. t/5 = d
Step-by-step explanation:
Every five minutes he travels 1 mile
200/5 = 40
After 200 minutes he travels 40 miles
t/5 = d
All that you need to do here is to multiply 5.5 by 11.5 which equates to...
=5.5x11.5
=63.25
because the second decimal is five you have to round up so that means that the answer is 63.3km
Answer:
There will be a 100 branches on tree in approximately 12 years.
Step-by-step explanation:
Concluding part of the question
In how many years will the number of branches be 100?
Solution
N(t)=38 × (9/5) ^ t/7.3
N(t)=38 × (1.8) ^ t/7.3
a) N = 100, t = ?
100 = 38 × (1.8) ^ (t/7.3)
(100/38) = (1.8) ^ (t/7.3)
2.632 = (1.8) ^ (t/7.3)
Taking the natural logarithms of both sides,
In 2.632 = In [(1.8) ^ (t/7.3)]
0.9676 = (t/7.3) × In 1.8
0.9676 = (t/7.3) × 0.5878
t = (0.9676 × 7.3) ÷ 0.5878
t = 12.02 years = 12 years.
Hope this Helps!!!