Answer:
4 miles per hour.
Step-by-step explanation:
2 hours = 28 miles downstream; 14 miles per hour
3 hours = 18 miles upstream; 6 miles per hour
The boat went faster when going downstream meaning the current is going towards up stream. I would find the average speed, (14+6=20/2=10 m/h average) and determine subtract the average from the speed from wither upstream or downstream. 14- 10= 4 and 10- 6= 4. Therefore the stream's current is 4 miles per hour.
The complete factor of the polynomial 9xy + 36x − 10y − 40 is (9x − 10) (y+4). Then the correct option is C.
<h3>What is polynomial?</h3>
Polynomial is an algebraic expression that consists of variables and coefficients. Variable are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.
Factor completely 9xy + 36x − 10y − 40.
Take 9x common from the first two terms and -10 from the last two terms. we have
9xy + 36x − 10y − 40
9x (y + 4) − 10 (y + 4)
Take y+4 common, then we have
(9x − 10) (y + 4)
The complete factor of the polynomial 9xy + 36x − 10y − 40 is (9x − 10) (y+4). Then the correct option is C.
More about the polynomial link is given below.
brainly.com/question/17822016
Answer:
3388 units^3.
Step-by-step explanation:
The volume of a pyramid = 1/3 * area of the base * altitude.
So here we have Volume = 1/3 * 84 * 11^2
= 3388.
Answer:6a+75
Step-by-step explanation:
5+2a+22+22+1+1+22+4a+3
add 22,22,1,1,22,5, and 3
2a+4a+75
6a+75
Yes it’s a proportional answer