Answer:
The correct answer is YES, it is a solution of the system.
Step-by-step explanation:
The system of equations have equations 2x − 3y = −5 and 4x − 4y = −4.
We need to find whether of not (2,3) is a solution to the system of equation.
We multiply the equation 2x − 3y = −5 by 2 and subtract it with the other equation. This gives us,
⇒ 4x - 6y +10 -4x +4y -4 = 0
⇒ 2y = 6
⇒ y = 3.
⇒ x = 2.
Thus ( 2 , 3 ) is the solution.
I did this test too! The answer was (-9, 0)
Hours to paint one room
<span>Jake: t hours </span>
<span>Lionel: t-2 hours </span>
<span>Wayne: (1.5)(t-2) hours </span>
<span>Now who is Donald? </span>
<span>Shall we assume that by "Donald" you meant "Wayne"? </span>
<span>If t is 6 hours, then the hours to paint one room is </span>
<span>Jake: 6 hours </span>
<span>Lionel: 4 hours </span>
<span>Wayne: 6 hours </span>
<span>This means that in one hour: </span>
<span>Jake can paint 1/6 of a room, </span>
<span>Lionel can paint 1/4 of a room, </span>
<span>Wayne can paint 1/6 of a room. </span>
<span>Added together, the three of them can paint (1/6 + 1/4 + 1/6) = 7/12 of a room in one hour.</span>
Answer:
C. 5 weeks.
Step-by-step explanation:
In this question we have a random variable that is equal to the sum of two normal-distributed random variables.
If we have two random variables X and Y, both normally distributed, the sum will have this properties:
To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:
The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:
The nearest answer is C. 5 weeks.
1026
- 1254
=
you answer that problem as in what's halfway. you would coun outward, in other words, minus each other and you get 1,228. so 1228 is the answer. sorry if its wrong
