Answer:
4b - a = 15
Step-by-step explanation:
if you replace the variables with their equivalent counterparts you get the equation 4(7) - 12 = __ when you do the math make sure to do the parentheses first then subtract, just like in elementary school remember pemdas parentheses, exponents, multiplication, division, addition, subtraction. I hope this helps.
good luck:)
Brainliestttt Plssssssss:)
Answer:

General Formulas and Concepts:
<u>Algebra I</u>
- Exponential Rule [Rewrite]:

<u>Calculus</u>
[Area] Limits of Riemann's Sums - Integrals
Integration Rule [Reverse Power Rule]:
Integration Rule [Fundamental Theorem of Calculus 1]: 
Step-by-step explanation:
<u>Step 1: Define</u>
<u />
<u />
<u />
<u>Step 2: Find Area</u>
- [Integral] Set up area:

- [Integral] Rewrite:

- [Integral] Reverse Power Rule:

- [Area] Fundamental Theorem of Calculus:

Topic: Calculus
Unit: Basic Integration/Riemann Sums
Book: College Calculus 10e
Answer:
1. The answer is 89
2. 1,7,4,11,4,9,5,1
3. i have no idea sorry
Step-by-step explanation:
Answer:
The median would be 18,not enough info for the Interquartile range, and range is 10 to 28
Step-by-step explanation:
You all ready said the answers but, the interquartile range.
Let us take the second equation first
2a + 2b = 6
Dividing both sides by 2 we get
a + b = 3
a = 3 - b
Putting the value of a in the first equation we get
3a + 4b = 9
3(3 - b) + 4b = 9
9 - 3b + 4b = 9
b = 9 - 9
= 0
Now putting the value of b in the second equation we get
a + b = 3
a + 0 = 3
a = 3
So the value of the unknown variable a is 3 and the value of the unknown variable b is 0.