Answer:
<h2>x² = -3</h2>
Step-by-step explanation:
In algebra, the goal is always to isolate the variable, so its value can be determined.
<h3>Step 1: Subtract 21</h3>
7x² = -21
<h3>Step 2: Divide by 7</h3>
x² = -3
<h3>Step 3: Check</h3>
7(-3) + 21 = 0
0 = 0 ✔
<h3>Step 4: Answer</h3>
x² = -3
I'm always happy to help :)
Answer:
Links are blurry please type (:
Step-by-step explanation:
Answer:
B) y ≥ 15
Step-by-step explanation:
Answer:
m=1/3
Step-by-step explanation:
11m- 4/3=2m+5/3
-2m. - 2m
9m -4/3=5/3
+4/3.+ 4/3
9m= 9/3
m=1/3
Answer:
P = 20x + 6y + 10
Step-by-step explanation:
The perimeter (P) of the figure is the sum of the sides , that is
P = 2x - y + 3x + 5y + 12 + 6x + 9x + 2y - 2 ← collect like terms
= 20x + 6y + 10