Take 2 points
(3, 9) and (0, 3)
Slope = (Y2 -Y1) ÷ (X2 -X1)
<span>Slope = (3-9) / (0-3)
</span><span>Slope = -6 / -3
</span><span>Slope = 2
The equation will have the form </span><span>y = mx + b</span>
We can rearrange this to b = y -mx
Let's take one of the points (3, 9) and the slope (m) and enter it into the formula:
b = -9 -2*3
b= -3
Now we enter all that data into b = y -mx
and get
y = 2x -3
Last week he bought three apples for $3.90. The cost of an apple = 3.9/3 = 1.3 This week he bought 2 more apples which totals 5 for $6.50 The cost of each apple = 6.5/5 = 1.3. The cost of an apple in the two weeks is the same. Arnold bought more apples in the following week but there was a corresponding raise in price. When he bought fewer apples last week he never had to pay as much as he did the year later
The 2 angles given are vertical angles , which mean they equal the same.
Set the 2 equations to equal each other and solve for x:
7x-26 = 5x +10
Add 26 to each side:
7x = 5x + 36
Subtract 5x from each side:
2x = 36
Divide both sides by 2:
X = 36/2
X = 18
Answer:
x
Step-by-step explanation:
If you added x to the equation, then it would become x²+4x+9=0, which is a perfect quadratic square
7.1 is the correct answer
