The required expressions are both equations 1 and 2 as shown:
.... 2
Complementary angles are angles that sum up to 90 degrees. For instance, and A and B are complementary if A + B = 90.
According to the question, if two complementary angles have measures of s and t then:
Twice of 's' is expressed as 
If t is less than twice s, this can be expressed as .... 2
The required expressions are both equations 1 and 2 as shown:
.... 2
Learn more on word problems leading to simultaneous equations here: brainly.com/question/14294864
The true option about the solution to the system of inequalities shown is B. The second line has a positive slope and goes through (0, negative 3) and (1, 0).
<h3>
How to explain the inequality?</h3>
Plot these ordered pairs on a coordinate plane and connect them by straight lines.
The sign of both inequalities is "<"which means both lines are dotted and everything below the lines is shaded.
From the below graph it is clear that all values are satisfied.
Learn more about inequality on:
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X² -x -6 = (x -3)(x +2)
The factors are ...
x - 3
x + 2
Answer:
1. 1/2
2. .5
3. 50%
Step-by-step explanation:
2 of the types of cards out of 4 is 2/4 which is half
Answer:
The substance half-life is of 4.98 days.
Step-by-step explanation:
Equation for an amount of a decaying substance:
The equation for the amount of a substance that decay exponentially has the following format:
In which k is the decay rate, as a decimal.
k-value of 0.1392.
This means that:
Find the substance's half life, in days.
This is t for which 
. So
The substance half-life is of 4.98 days.
