Respuesta :

ronhagrid310

Answer:

Sophia took a test with 21 questions.

If she answered two sevenths of the questions​ correctly, number of correct answers she did: N = 21 x 2/7 = 6

=> Number of answers she got wrong: N = 21 - 6 = 15

Hope this helps!

:)

CHERLYNnotCHERRY

Answer:

She wronged 15 questions.

Step-by-step explanation:

Given that she answer 2/7 correctly. So firstly, you have to calculate how many questions she answered correctly, you have to multiply it by 21 :

[tex] \frac{2}{7} \times 21 \\ = 6 \: questions[/tex]

She has answered 6 questions correctly then the remaining questions are wrong. So you have to substract from the correct answer :

[tex]wrong = 21 - 6[/tex]

[tex]wrong = 15 \: questions[/tex]

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