Let the score on her seventh test be "x".

SO,

$\frac{83+92+79+88+89+95+x}{7} =90\\\\ \frac{526+x}{7}=90\\\\ 526+x=630\\\\x=630-526\\\\ \boxed{x=104}$

∴ He must get 104% on his seventh test to get an average score of 90%

5 0

3 years ago

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What is the ratio for 2 red paper clips to 6 blue paper clips? Write it as a fraction.

Dmitriy789 [7]

Answer:

2 over 6 as a fraction simplifies as 1 over three.

Step-by-step explanation:

If you are writing as a fraction, you put 2 over 6 and simplify. Your answer is 1 over 3

7 0

3 years ago

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Left model : 1 cm = 6 in

Rama09 [41]

Answer:

Can you give us a picture?

5 0

2 years ago