20₃ - 11₃ = 20₃ - 10₃ - 1₃
… = 10₃ - 1₃
… = 2₃
Put another way, we "borrow a 1" from the 3¹ digits place:
20₃ = 1(3)₃ - 11₃ = 2₃
But this is just the number 2 (in base 10), which in base 2 would be 10₂.
Answer:
Earl should order 76 yellow paper reams and 24 white paper reams.
Step-by-step explanation:
This problem can be computed as system of equations.
I will say that x is the number of yellow paper reams and that y is the number of white paper reams.
Earl will order 100 reams in total, so
x + y = 100
He has a budget of $484, so this is what he is going to spend. Each yellow paper ream(x) costs $4.00 and each white paper ream costs $7.50, so we know that
4x + 7.5y = 484
To know how many reams of each color should he order, we need to solve the following system of equations
1) x + y = 100
2) 4x + 7.5y = 484
I am going to write x as a function of y in equation 1), and then replace it in equation 2).
x = 100-y
Now replacing in equation 2)
4(100-y) + 7.5y = 484
400 - 4y + 7.5y = 484
3.5y = 84
y = 24.
Returning to equation 1)
x = 100-y = 100-24 = 76
So, Earl should order 76 yellow paper reams and 24 white paper reams.
Image of A (2-8, 6+4) =(-6,10)
image of B (-1-8, 5+4)=(-9,9)
This could be wrong because I'm going into the fifth grade but wouldn't it just be (7,-3)?
Step-by-step explanation:
Substitute the x values from the table into the equation.
<u>Substitute -4 into the equation:</u>
y = -3(-4) + 4
y = 12 + 4
y = 16
<u>Substitute -2 into the equation:</u>
y = -3(-2) + 4
y = 6 + 4
y = 10
<u>Substitute 0 into the equation:</u>
y = -3(0) + 4
y = 0 + 4
y = 4
<u>Substitute 2 into the equation:</u>
y = -3(2) + 4
y = -6 + 4
y = -2
y = 16, 10, 4, -2
