Answer:
x = 12
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality<u>
</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
3x + 6(x - 11) = 5x - 18
<u>Step 2: Solve for </u><em><u>x</u></em>
- Distribute 6: 3x + 6x - 66 = 5x - 18
- Combine like terms: 9x - 66 = 5x - 18
- Isolate <em>x</em> terms: 4x - 66 = -18
- Isolate <em>x</em> term: 4x = 48
- Isolate <em>x</em>: x = 12
Answer:
C
Step-by-step explanation:
There’s nothing hard with this
You need to know special right triangles
This is a 30,60, 90 triangle
We automatically know becuase theres. Right angle (90) and a 60 degree angle
now the formula is the smallest side is (n) {I’m using N becuase theres already an X) or in this case, 6
The hypotenuse, the one directly above the 2nd biggest side, or the diagnoal side is 2n or (12). Now we know what X is in this situation which is 12. So that narrows it to 2 answers
Now the side on the bottom of the hypotenuse, the second biggest side is used in the formula N. So we know what N is in the beginning, 6 so we just plug that in and well get C. Attached is a photo on q 30, 60, 90 special right triangle
Answer:
Step-by-step explanation:
2a-1<7-1.2 a
2a+1.2a<7+1
3.2 a<8
a<(8/3.2)
or a<(80/32)
or a<5/2
or a<2.5
Answer:
Step-by-step explanation:
If AB and DE are equidistant from the center, that means that they are the same length. We set the equations equal to one another and solve for x:
3x - 7 = 5(x - 5) and
3x - 7 = 5x - 25 and
18 = 2x so
x = 9. Now we sub that into the expression for AB (or DE since they're the same length):
3(9) - 7 = 20
Both AB and DE measure 20 units.
Answer:
The answer is 28
Step-by-step explanation:
B×h ÷ 2
8×7 ÷ 2