Which fraction would make this equation true? 9 x ? = 6 3/4
1 answer:
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Answer:
y=4x
Step-by-step explanation:
First, find the slope
We know 2 points, (2,8) and (12,48).
(2,8) can be (x1, y1)
(12,48) can be (x2, y2)
We can say that y2 is 48, y1 is 8, x2 is 12, and x1 is 2. Substitute them in
m=4
Now, we can use the point slope formula, since we have a point and the slope
We know m, the slope is 4. We also know a point (2,8), which is (x1, y1). Substitute them in
y-8=4(x-2)
Distribute the 4
y-8=4*x-2*4
y-8=4x-8
Add 8 to both sides
y=4x
Answer:
The answer to your question is length = 21.73 and width = 11.73
Step-by-step explanation:
Data
Total area = 255 ft²
length = x + 10
width = x
Formula
Area of a rectangle = length x width
Substitution
255 = (x + 10)(x)
Expand
255 = x² + 10x
Equal to zero
x² + 10x - 255 = 0
Solve with the quadratic formula
x =
x =
x =
x₁ = 11.73 x₂ = -21.73
There are no negative dimensions so the answer is 11.73.
Length = 11.73 + 10 = 21.73 ft