A rate in which the numerator and the denominator are equal to a rate of one
The answer is 20/3 first you set a variable x and 30x=200 divid both side by 30 and get the final answer
Answer:
7
Step-by-step explanation:
9/m+4
9/3+4 (m=3)
3+4
7
Again, nice problem. These are not super easy. You need to imagine the triangles in the figure and relate sides.
For instance: ADC, its hypotenuse is 15
For ABC, it is 20,
so 20/15 is the ratio between both triangles. Now let's choose the side with 'x'
x is one side of ADC, the corresponding side in ABC is 15 (the second longest sides). You need to rotate the triangles, etc ... That's the tricky part :)
So:
20/15 =15/x ----> x = 15*15/20 = 225/20 = 45/4
Which is C
Not sure whether it's too late to help you though!!!!
Also notice that it's kind of a product rule:
x * 20 = 15 * 15
I am sure the book explains a short way of getting to this equation, like sides opposite, blah blah, but what i told you is the reason. You asked for understanding it! Best luck!
Answer:
7 /120
Step-by-step explanation:
7/10 ÷ 12
Copy dot flip
7/10 * 1/12
7 /120
