Well, 1/5 would mean dividing both width and height by 5. Do that... then times new answer by 4 to get 4/5.
So...
20/5 = 4*4 = 16 in wide
15/5 = 3*4 = 12 in high
Hope this helps! :)
Answer:
Angle C = Angle C
ABC is congruent to EDC by SAS
Step-by-step explanation:
Angle C = Angle C by the Reflexive Property
An equation is formed of two equal expressions. It will take for the radioactive element to decay from 960 grams to 295 grams in 25.54 minutes.
<h3>What is an equation?</h3>
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
The radioactive decay of an element is given by the formula,

Given the half-life of the element is 15 minutes, therefore, we can write,

Now, the time it will take for 960 grams to decay to 295 grams is,

Hence, it will take for the radioactive element to decay from 960 grams to 295 grams in 25.54 minutes.
Learn more about Equation:
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