Answer:
Step-by-step explanation:
1). (B). Replace one equation with the sum/difference of both equation.
System B is
- 4x - 6y = 9 ........ <em>(1B)</em>
-4x + 3x = - x
- 6y + y = - 5y
9 - 4 = 5
- x - 5y = 5 ........ <em>(2B)</em>
2). Yes, both system are equivalent.
Answer:
y = 4
Step-by-step explanation:
Step 1: Write equation
9/4y - 12 = 1/4y - 4
Step 2: Solve for <em>y</em>
- Subtract 1/4y on both sides: 8/4y - 12 = -4
- Simplify: 2y - 12 = -4
- Add 12 to both sides: 2y = 8
- Divide both sides by 2: y = 4
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
9/4(4) - 12 = 1/4(4) - 4
9 - 12 = 1 - 4
-3 = -3
Answer:
9.4 = x
Step-by-step explanation:
You are given the hypotenuse and the adjacent side, leading you to use cosine.
<u><em>Set it up:</em></u>
<u><em /></u>
<em><u>Multiply everything by 14, to remove it from the denominator:</u></em>
<em><u /></em>
<em><u>Multiply accordingly:</u></em>
9.36 = x
<em><u>Round to nearest tenth:</u></em>
9.4 = x
M=-4
The number with x is always going to be the slope
Y-intecept=9
<span>The Empirical Rule is used when data distribution is bell shaped, whereas Chebyshev's theorem is used for all distribution shapes</span>