Answer:
The answer to #7 is -4
Step-by-step explanation:
-2(x-3y)
-2( (-4) - 3(-2) )
-2 (-4+6)
-2(2)
-4
The system:
- 12 c + 3 d = 6
- 3 c + 6 d = - 9
----------------------
The 1st equation:
- 12 c = - 3 d + 6 / * ( - 1) ( multiple both sides by -1 )
12 c = 3 d - 6 / : 12 ( divide both sides by 12 )
c = d / 4 - 1/2
Answer:
C ) c = 1/4 d - 1/2
Isolate the z. Note the equal sign. Subtract 1/7z to both sides
1/7z (-1/7z) + 2 = -6/7z (-1/7z)
2 = -6/7z - 1/7z
Simplify. Combine like terms
2 = -7/7z
2 = -1z
Isolate the z. Divide -1 from both sides
(2)/-1 = (-1z)/-1
z = 2/-1
z = -2
-2 is your answer
hope this helps
Answer:
b) 336 cm³
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
<u>Geometry:</u>
- Volume of a Rectangular Prism: V = lwh
Step-by-step explanation:
<u>Step 1: Define</u>
l = 4 cm
w = 6 cm
h = 14 cm
<u>Step 2: Solve for </u><em><u>V</u></em>
- Substitute: V = (4 cm)(6 cm)(14 cm)
- Multiply: V = (24 cm²)(14 cm)
- Multiply: V = 336 cm³
And we have our final answer!
69 idk if I got this right
