3 years ago

What is the value of a?

Mathematics

2 answers:

Helen [10]3 years ago

7 0

25 ² - 20 ² = a
625 - 400 = 225
a = 225
a = 15

ohaa [14]3 years ago

6 0

Answer:

Step-by-step explanation:

a²+20²=25²

a²=625-400

a²=225

a=15

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