28 is False
29 is True
~Hope this helped~
Answer:
The answer is
Step-by-step explanation:
❃Incase you forgot what the linear equation formula is ↶
❃Since we already have the slope, we don't need to solve for that.
➊ First: We are going to find the y-intercept.
➋Second: Plug in.
One way to look at this is to make 2 equations and treat it as a set of equations. We will make the cost of a donut equal to x, and the cost of a coffee equal to y.
Harold's order:
4x + 2y = 4.08
Melinda's order:
2x + 3y = 3.92
To combine these equations, we need to cancel out either x or y:
4x + 2y = 4.08
<span>2x + 3y = 3.92
</span>
4x + 2y = 4.08
<span>4x + 6y = 7.84
</span>
4x + 2y = 4.08
<span>-4x - 6y = -7.84
</span>
We can now combine these equations:
4x + 2y = 4.08
<span>-4x - 6y = -7.84
</span>
-4y = -3.76
y = 0.94
Therefore the cost of a large coffee is $0.94. We can plug this into either original equation to find the cost of a donut.
<span>4x + 2y = 4.08
</span>4x + 2(0.94) = 4.08
4x + 1.88 = 4.08
4x = 2.20
x = 0.55
The cost of a donut is $0.55, and the cost of a large coffee is $0.94.
Answer:
$15
Step-by-step explanation:
Let bushes = b and trees = t.
We can write:
12b + 15t = 600 (Equation 1)
8b + 20t = 680 (Equation 2)
24b + 30t = 1200 (Equation 3 -- Multiply Equation 1 by 2)
24b + 60t = 2040 (Equation 4 -- Multiply Equation 2 by 3)
30t = 840 (Subtract Equation 3 from 4)
t = 28 (Divide by 30)
12b + 15 * 28 = 600 (Substitute t = 28 into Equation 1)
12b = 180 (Simplify)
b = 15 (Divide by 12)
