a = 4 first term, r = ?, T10 = 100.
Tn = ar^n - 1 formula for g.p
T10 = 4r^ 10 - 1
100 = 4r^9
Divide both side by 4
100/4 = 4/4r^9
25 = r^9 take the 9th root of both side
9√25 = 9√r^9
r = 9√25
To find the nth term
Since Tn = ar^n - 1
Answer:
we express the ratio of pencil to eraser and multiply it by the number of the number of pencils and erasers. 4/5 * x=20 , so x=25, then it implies that there are 5 erasers.
$78.17 rounds to $78
15% of $78 = $11.70 which rounds to $12
Step-by-step explanation:
Come to an answer,I mean final answer after checking all your answers with the solutions.
Answer:
f(-2)=2
Step-by-step explanation:
f(-2)=4x+10
f=(4)(-2)+10
f=-8+10
f=2
