Answer:
3) f(x) = 3(x + 2)^2 - 1.
Step-by-step explanation:
f(x) = 3x² + 12x +11
f(x) = 3(x^2 + 4x) + 11 Completing the square:
f(x) = 3[(x + 2)^2 - 4] + 11
f(x) = 3(x + 2)^2 -+3*-4 + 11
f(x) = 3(x + 2)^2 - 12 + 11
f(x) = 3(x + 2)^2 - 1.
Answer: 2.66 hours
Step-by-step explanation:
Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.
Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.
Together in 1 hour they can paint 1/8 + 1/4 = 3/8
Total hours for painting is 3/8 or 2.66 hours
Answer:
2334546
Step-by-step explanation:
the answers is 2/3 /4/2 and 5/6
Answer:
a)
b)
Step-by-step explanation:
Use logarithm properties:
Then
a)
b)
Answer:
165 more students are coming
Step-by-step explanation:
To solve percentage problems we do = since the 70 is 35% that is the part and the percentage is 35 since the total is unknown it is the x
now we cross multiply
70 * 100 = 35 * x
7000 = 35x now we divide both sides by 35 so that the x is alone
35x ÷ 35 = x
7000 ÷ 35 = 200
x = 200 the total number of students COMING is 200 so now we subtract 35 to find out how many MORE are coming
200 - 35 = 165