Answer:
4 : 7
Step-by-step explanation:
Given 2 similar figures the if the ratio of perimeters = a : b
The the ratio of areas = a² : b²
Here
ratio of areas = 16 : 49 , then
ratio of perimeters = 
: 
= 4 : 7
Step-by-step explanation:
how could we get 30x^2?
6x × 5x
<em>so</em><em>,</em>
x^2 +6x+5x+30=0
x (x+6) +5 (x+6)=0
(x+6)(x+5)=0
(x+6)=0/(x+5)=0
x=-6 or x=-5
Answer:
To find the radius, divide the diameter by 2;
V={π(r^2)h}/3
={3.14(4^2)*9 cm^3}/3
=3.14*16*3 cm^3
=150.72 cm^3
Given that
z₁ = 15 (cos(90°) + i sin(90°))
z₂ = 3 (cos(10°) + i sin(80°))
we get the quotient z₁/z₂ by dividing the moduli and subtracting the arguments:
z₁/z₂ = 15/3 (cos(90° - 10°) + i sin(90° - 10°))
z₁/z₂ = 5 (cos(80°) + i sin(80°))
so that z₁ is scaled by a factor of 1/3 and is rotated 10° clockwise.
Answer:
Step-by-step explanation:
We have given integral 
, here 
and 
Now first integrate 
So 
Integrating by part
So 
