Need help with these ASAP not sure if the photo is turning up though will give brainliest and 30 points to the first correct ans
1 answer:
Answer:
28) (a - 3b)(a + 2b)
29) 7(c - 2b)(c + 16b)
30) ½(a²)(a - 5)(a + 4)
Step-by-step explanation:
1) a² - ab - 6b²
a² - ab + (0.5b)² - 6.25b²
(a - 0.5b)² - (2.5b)²
(a - 0.5b - 2.5b)(a - 0.5b + 2.5b)
(a - 3b)(a + 2b)
7c² + 112bc - 252b²
7(c² + 16bc - 36b²)
7(c² + 16bc + (8b)² - 100b²)
7[(c + 8b)² - 100b²]
7[(c + 8b)²- (10b)²]
7[(c + 8b - 10b)(c + 8b + 10b)]
7(c - 2b)(c + 16b)
a⁴/2 - a³/2 - 10a²
(a²/2)(a² - a - 20)
(a²/2)[a² - a + (½)² - (½)² - 20]
(a²/2)[(a - ½)² - 81/4]
(a²/2)(a - ½ - 9/2)(a - ½ + 9/2)
½(a²)(a - 5)(a + 4)
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Answer:
$180
Step-by-step explanation:$10 per hour, so 10 is multiplied by 9
He gets paid 90 Dollars for one day of work so we would multiply that by Two days.
Roughly 2,365,200,000. If you have muiltiple choices round up to the nearest
Answer:
$60 for 1 day
Step-by-step explanation:
60 (dollars) x 4 (days) = $240
Move the decimal 2 places to the left.
Answer:
9
Step-by-step explanation:
3 times the sum of 4 and 2 = 3*(4+2)
= 3 * 6
= 18
18 - 9 = 9
