<span>going downstream -
t = 14/(2 + v)
going upstream -
t = 7/(2 - v)
14/(2 + v) = 7/(2 - v)
(2 + v)/2 = 2 - v
v = 2/3km/h</span><span>
</span>
Answer:
C) 7854 cm²
Step-by-step explanation:
The formula for the area of a circle is A = πr²
Now just plug in the numbers
A = π (50²)
A = 2500π
Let's say pi is 3.14
A = 2500(3.14)
A ≈ 7850
The closest answer to this answer is C: 7854
Answer:
The area of the figure is 117m²
Step-by-step explanation:
In this problem, you have two shapes. One shape is a rectangle. The other shape is a triangle.
Area of a rectangle = b*h = 9*7 = 63
Area of a triangle =
(b*h) =
Since there are two triangles, you will multiply the area of the one triangle in the figure by 2.
27*2 = 54
Now, you add up the areas!
54 + 63 = 117
So, the area of the figure is 117m²
Answer:
C. 98.0%
Step-by-step explanation:
If t represents 35 days, then in order to find the daily decay rate we will have to input 1/35 as the value of t.
100(0.5)^
= 98.039
The daily decay rate is 98.0%
Answer:
The formula to find the third side of the triangle is 
Step-by-step explanation:
In order to find value of the third side without knowing any degree measurements, you need to know value of two sides. Variable
, in this case, is a hypotenuse (the longest side of the triangle).