Answer:
Step-by-step explanation:
F(x) = 7 - 5x + 7x²
f(-9) = 7 - 5*(-9) + 7*(-9)²
= 7 + 45 + 7*81
= 7 + 45 + 567
= 619
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.
NO. They are not.
We can prove this by turning those numbers into fractions:
16 / 14 = 1.1428 ; 64 / 60 = 1.0667
Or simply:
64 / 16 = 4
60 / 14 = 4.29
To get the equivalent of 16 to 14; we must multiply both numbers by 4.
16 * 4 = 64
14 * 4 = 56
The equivalent of 16 to 14 is 64 to 56.
Answer:
what is the question above what you are showing in the picture ?
Step-by-step explanation:
it will help a lot
