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3 years ago

6

One section of the reporting period test in history had 35 true or false questions. Maria answered 75% of the questions correctl

y. How many of the questions did she answer incorrectly?

1 answer:

vladimir2022 [97]3 years ago

8 0

Answer:

29 correct

Step-by-step explanation:

i honestly dont know how to explain this so its probably wrong but you know...

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Step-by-step solution for: (√2+√10)^2

azamat

Note: √a * √a = a
   √a * √b = √ab

(√2 + √10)² = (√2 + √10)(√2 + √10)
= √2(√2 + √10) + √10(√2 + √10)
= √2*√2 + √2*√10 + √10*√2 + √10*√10
=    2 + √20 + √20 + 10
      = (2 + 10) + (√20 + √20)
      = 12 + 2√20

√20 = √(4 *5) = √4 * √5 = 2√5

   = 12 + 2√20 = 12 + 2(2√5)
   = 12 + 4√5

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3 years ago