Karen missed 9 questions on the math exam. If she missed 20% of the questions, how many questions were on the exam all together?

Mathematics

2 answers:

Yanka [14]3 years ago

6 0

Answer:

There were 45 questions.

Step-by-step explanation:

20 out of a hundred is one fifth. this one fifth of the test is nine questions. we want to find the whole number so we do 9 times 5 to get he other 80% which means 45 questions on the test.

ddd [48]3 years ago

6 0

Answer:

Karen missed 9 of the 45 questions on her mathematics exam. The exam had a total of 45 questions.

Step-by-step explanation:

If Karen missed 9 questions (which equals 20% of the exam), then she completed 80% of the exam.

9 questions = 20%

80% = x

To solve this, we can divide the number of questions missed (9) by 20%, which equals 45. Thus, Karen's test had a total of 45 questions!

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Guys I really need help with these too thanks u before!!!!

Natali5045456 [20]

Hey!!

here is your answer >>>

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let's take this as 3x - 10 = 11

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x = 7
So, The numbers of X are always more than 7

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9x + 2 = 5

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x = 15 ÷ 4

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5) 2 ( 9 + x ) > 20

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x = 1

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We can solve the rest using this

Hope my answer helps!

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4 years ago

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nadezda [96]

Answer:

Step-by-step explanation:

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