Answer:
C
Step-by-step explanation:
Answer:
8x + 3
Step-by-step explanation:
The cost of 5 t-shirts and 3 skirts
= 5(x - 3) + 3(x + 6)
= 5x - 15 + 3x + 18
= (5x + 3x) + (-15 + 18)
= 8x + 3
Answer:
see
Step-by-step explanation:
diameter=2×pi×r
diameter. 2.22/7.r
Answer:
144
Step-by-step explanation:
Answer:
x = ±20
Step-by-step explanation:
Step 1: Write equation
x² = 400
Step 2: Square root both sides
x = ±√400
x = ±20
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
20² = 400
400 = 400
(-20)² = 400
400 = 400