Answer:
a = 15
Step-by-step explanation:
Given
3a + b = 54 ← substitute b = 9
3a + 9 = 54 ( subtract 9 from both sides )
3a = 45 ( divide both sides by 3 )
a = 15
Answer:
The answer is "2.5".
Step-by-step explanation:

The pieces which does not achieve that specific weight either are below and above the average standard deviation of 2.5. The percentage of components not fulfilling their weight data is 1.1% using a Table of Z-scores.
P=5000
t=8
r=7%=0.07
n=4
Now all of this have to be substituted to the formula
A=5000(1+0.07/4)^(4*8)=5000(1+0.07/4)³²=8711.07
<h2>
Answer:</h2>
Option: A is the correct answer.
The ordered pair of point I' are:
A) (-0.8,2.4)
<h2>
Step-by-step explanation:</h2>
We know than if any point A with vertices as (a,b) are dilated by a scale factor of k then the vertices of the transformed point is:
A(a,b) → A'(ka,kb)
We are given vertices of point I as:
I(-2,6)
Hence, the vertices of the transformed point I' after dilating by a scale factor of 2/5 is:
I(-2,6) → I'(-2×(2/5),6×(2/5))
⇒ I(-2,6) → I'(-0.8,2.4)
Hence, option: A is the answer.
A) (-0.8,2.4)