This is a proportion question. We can express this as an equation where the answer is
x:
=
From there, you can just cross-multiply and divide to get:
A tenth of 250 is 25, so this is roughly
or
, so it'll be approximately 1.7 inches on the map.
Answer:
Step-by-step explanation:
Given that in 1987, the population of country A was estimated at 87 million people, with an annual growth rate of 3.5%
Thus the equation for population for country A would be
The 1987 population of country B was estimated at 243 million with an annual growth rate of 0.6%.
So equation for population for country B would be
where t = time in years and P in millions
a) P(A) = 2*87 when
Take log and solve
ln 2 = 0.005 t
t = 138.63
Thus after 138 years population will double for A
b) P(A) = P(B) when
Approximately after 35.5 years the populations of both countries would be equal.
Answer:
224
Step-by-step explanation:
7x^2y, when x = 4 and y = 2
Plug in
7x^2y = 7 (4)^2 (2)
=7 * 16 * 2
= 224
i would subtract 7 and divide by 4;
4x + 7 = 15
4x = 8
x = 2
I think the value of x is 15
