Answer:
D
Step-by-step explanation:
Given
9 - 7x = (4x - 3)² + 5 ← expand the squared factor
9 - 7x = 16x² - 24x + 9 + 5, that is
9 - 7x = 16x² - 24x + 14 ( subtract 9 - 7x from both sides )
0 = 16x² - 17x + 5, that is
16x² - 17x + 5 = 0 ← in standard form → D
Answer:
here
Step-by-step explanation:
16 karat gold is 16 parts gold to 8 parts other material for a pure gold percentage of 67%.
Answer:
in steps
Step-by-step explanation:
base width: 1/2 x 5 = 2.5
base length: 1/2 x 4 = 2
height: 1/2 x 3 = 1.5
Volume: lwh = 2.5 x 2 x 1.5 = 7.5 in³
Answer:
n = -1
Step-by-step explanation:
-8n + 4 (1 + 5n) = -6n - 14
-8n + 4 + 20n = -6n - 14 Distribute
12n + 4 = -6n - 14 Combine Like Terms
18n + 4 = -14 Add 6 on Both Sides
18n = -18 Subtract 4 on Both Sides
n = -1 Divide Both Sides by 18
