Let

be the amount of time it takes to perform an arm routine and

be the amount of time it takes to perform an abdominal routine. We see:


Subtracting the second equation from the first gives

. Substituting gives

, so

and

.
Thus, an arm routine takes ten minutes and an abdominal routine takes thirty minutes.
Answer:
A function is a relation that for every input there is only one output.
Step-by-step explanation:
Answer:
Step-by-step explanation:
you multiply it with 100
0.23 x 100 = 23%
Answer:
D) It passes the horizontal line test
Step-by-step explanation:
In order for a line to represent a function it must pass the vertical line test.
To apply the horizontal line test, take a pencil and hold it vertically. Then, move it across the graph from left to right. If it intersects the line at 1 point everywhere along the line, then it is a function (functions can only have 1 Y value for every X value).
Answer:
Answer choice A and answer choice C
Step-by-step explanation:
If you flip one of the triangles, the tangents and sins of each letter correspond to each other and equal 1 when divided because they are the same number.