Answer:
r = 105
Step-by-step explanation:
Given quadratic equation:
x² − 9x − 6
Quadratic formula is given by:
(-b ± √b² - 4ac) ÷ 2a
For the equation: x² - 9x - 6
a = 1, b = -9 and c = -6
Substitute in the quadratic formula:
(-b ± √b² - 4ac) ÷ 2a
(-(-9) ± √(-9)² - 4(1*-6)) ÷ 2*1
= 9 ± √105 / 2
The solution of x² − 9x − 6 is expressed as 9 plus or minus the square root of r, all over 2
Therefore, the value of r is 105
Answer:
The 12 children selected in Mrs. Smith's kindergarten class.
Step-by-step explanation:
A sample is a representative part of a population on which a research is carried out.
The study In Mrs Smith's class was to find out the number of hours the children in Kindergarten Sleep in a day. Out of the total number of students, 12 were selected for observation. The 12 childen selected is therefore a sample of the class.
hello
to solve this problem, we need to work out how much he earns weekly, and then work it up to annually
step 1
calculate the weekly wage into annual wage
he earns $8.50/h and works 40 hours in a week
weekly wage =
Raggie earns $17,680 annually
he gets fridge benefit of 19% of his annual wage
we need to find 19% of $17,680
he gets additional $3359.2 as fridge allowance
we can add up the total to know his total annual wage
total annual wage = wage + allowance = $17680 + $3359.5 = $21,039.2
his annual expense
commuting = $419
uniforms = $560
parking = $430
total expense = $419 + $560 + $430 = $1,409
net wage = gross wage - expenses
net wage =
Reggie's annual wage after expenses = $19630.2
So, in this problem you already have the equations set up for how much money each one works. You have Jim, earning a starting amount of $35, plus an additional $3 for every hour he works. You also have John, who gets $8.
The variable in the equations is h, which stands for hours. From there, you can put the three different h values (6, 7, and 8) into the equations to see who gets more money.
For instance, for Day 1, Jim gets 35+3x6 dollars, or 35+18=$53, while John gets 8x6 dollars, or $48. You can substitute in 7 and 8 and do the same process to get the answers for Day 1 and 2.
Hope this helps!
