Answer: -5x^3 -13x^2 -6x + 15ix + 39ix + 18i
Step-by-step explanation:
An equation with zeros at these numbers could be put in form x = number.
So, (x-3) could be set to 0 to get x=3.
So, you can look at these "answers" they give you and work backward to get:
(x-3)(x+2/5)(x-3i)
Multiply first two together.
x^2+2/5x-3x-6/5
simplify
x^2 - 2 3/5x -6/5
Change first term to have same denominator by multiplying by "1" in the form of -5/-5
-5x^2/-5 - 13/5x -6/5
Divide all terms by 1/5 (which is the same as multiplying each term by 5)
(-5x^2 -13x -6)
Now multiply by (x-3i)
-5x^3 -13x^2 -6x + 15ix + 39ix + 18i
Answer:
YEAAAA LES G O O O O
Step-by-step explanation:
Answer: A confidence interval for the mean cost (in dollars) for one shipment of vases = (49,59)
Step-by-step explanation:
Confidence interval for mean: Mean ± Margin of error
Given: The online store found the mean wholesale cost of one shipment of vases was ĉ = 54 dollars, with a margin of error of 5 dollars.
A confidence interval for the mean cost (in dollars) for one shipment of vases
Hence, a confidence interval for the mean cost (in dollars) for one shipment of vases = (49,59)
Answer:
500 plants
Step-by-step explanation:
Total capacity of barrel = 150 L
1 liter = 1000 mL
Total capacity of barrel in mL = 150*1000 mL = 150,000 mL
amount of water given to each plant by Mattie = 300 mL
Let there be x plants
Then, total amount of water given to x plant by Mattie = 300*x mL
We know that full rain barrel has 150,000 mL
so total amount of water given to x plant by Mattie should be equal to full rain barrel capacity.
Substituting value of full rain barrel capacity and total amount of water given to x plant
Mathematically it can be written as
total amount of water given to x plant by Mattie = full rain barrel capacity
300*x mL = 150,000 mL
=> x = 150,000/300 = 500
Thus, 500 plants can she water with a full rain barrel.
