On average the number of electric guitars sold in New York each year is 88,438, which is seven times the average number of elect
1 answer:
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Answer:
<em>x = 24 </em>
Step-by-step explanation:
The corresponding sides of similar Δs are proportional.
ΔADE ~ ΔABC ⇒ =
=
AD = x + 8 ; DE = 8
AB = x ; BC = 6
=
⇔ 8x = 6(x + 8) ⇒ <em>x = 24</em>
Answer:
1.46
Step-by-step explanation:
First find the the mean score before he made a 90.
Now add the score of 90 and calculate.
Subtract the two scores.
His mean test score increased by 1.46.