Answer:
2.97 kg.
Step-by-step explanation:
We have been given that Tungsten, W-181 is a radioactive isotope with a half life of 121 days.
We will use half-life formula to solve our given problem.
, where,
A = Final amount.
a = Initial amount,
t = Time,
h = Half life.
Upon substituting our given values in above formula we will get,
Therefore, 2.97 kg of W-181 will be left after 1 year.
x = 45°
Solution:
Given data:
Measure of larger arc = 152°
Measure of smaller arc = 62°
<em>If a tangent and a secant intersect at the exterior of a circle then the measure of angle formed is one-half the positive difference of the measures of the intercepted arcs.</em>
⇒ x = 45°
The value of x is 45°.
Answer:
f(x) = 2x +1
Step-by-step explanation:
Apparently the ordered pairs are ...
(x, f(x)) = (1, 3), (2, 5), (3, 7), (4, 9)
We note that as x increases by 1, the value of f(x) increases by 2. The difference between f(x) and 2x is 3-2·1 = 1, so we have ...
f(x) -2x = 1
f(x) = 2x +1 . . . . . . add 2x
