Answer:
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
Step-by-step explanation:
<u>Step 1: Define</u>
<u />
<u />
<u />
<u>Step 2: Solve for </u><em><u>y</u></em>
- Cross-multiply:
- Multiply:
- Isolate <em>y</em>:
- Rewrite:
<u>Step 3: Check</u>
<em>Plug in y to verify it's a solution.</em>
- Substitute:
- Divide:
Here, we see that 3.125 does indeed equal 3.125. ∴ y = 1.44 is a solution of the equation.
43.6 is how much the shirt would cost including sales tax
4 x - 2 y = 6
2 x + y = 5 / * 2 ( we will multiply both sides by 2 )
-------------------
4 x - 2 y = 6
+
4 x + 2 y = 10
---------------------
8 x = 16; x = 2
4 + y = 5
y = 5 - 4; y = 1
In the system of equations D :
8 x = 16; x = 2 ,
8 + 2 y = 10
2 y = 2, y = 1
Answer: D ) is the equivalent system
Answer:
B 
Step-by-step explanation:
In order to get the same denominator, we need to multiply the second fraction by (b+2) in the numerator and denominator.
We will end up in something like this :
I just timed the second fraction by b+ 2 and then i added them together.
Therefore, we will get 
now factoring the numerator we will end like this
we will then end up with the answer.
Hope this helps.
Answer:
60 runs
Step-by-step explanation:
Given that:
Score in first innings = 30 runs
Change in score during second inning = + 30
The score in the second inning will be :
Score in first inning + change in score during second inning
30 + (+30)
30 + 30
= 60 runs
