If 2x+2x+2x=12, then 6x=12 so x=2. x will be 2. Even in 2x-13. ;-)
The value of 2x-13 with x=2 is 4-13 = -9, but that's another question, isn't it?
Answer:
$16
Step-by-step explanation:
if 5=20 then 20÷5=4 and 4x4=16
42°
Step-by-step explanation:

(Angles in linear pair)



(Angle sum postulate of a triangle)



(corresponding angles)

(vertical angles)


Answer:
<u>Trapezoid area:</u>
- A = 1/2(a + b)h, where a, b - bases , h - height
<h3>17. a)</h3>
- a = RS = 4 units
- b = AT = 8 units
- h = 8 units, the distance between RS and AT
A = 1/2(4 + 8)*8 = 48 units²
<h3>17. b)</h3>
- a = SK = 4 units
- b = OC = 10 units
- h = SO = 6 units
A = 1/2(4 + 10)*6 = 42 units²
<h3>18. a)</h3>
- a = ME = 6 units
- b = AZ = 10 units
- h = MA = 8 units
A = 1/2(6 + 10)*8 = 64 units²
Question 1. 5b + 2 = 17
Step 1. Subtract 2 from both sides of the equation.
5b+2-2=17-2
Step 2. Then simplify.
5b=15
Step 3. Finally divide by 5.
5b/5=15/5
Answer: b=3
Question 3.
Step 1. Subtract 9 from both sides.
9+4b-9=17-9
Step 2. And simplify.
4b=8
Step 3. Finally divide by 4.
4b/4=8/4
Answer: b=2
Hope this helps! :)