After 3 weeks, a corn plant is 2 feet tall. After 9 weeks, the plant is 8 feet tall. Write an equation that represents the height y (in feet) of the corn plant after x weeks.
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(3,2) & (9,8)
to make an equation, you have to find the slope by:
(y2-y1) (8-2) 6 1
---------- = ------ = --- = ---
(x2-x1) (9-3) 6 1
then you use the set up "y=mx+b" where "m" is your slope, and "B" is the height that it already had.
so far it should look like this: y=1x+b
In order to find the "B" you take one of the coordinates and replace the "X" and "Y" with what ever numbers they are.
For instance: (2)=1(3)+b then you solve for "B"
2=3+b
-3 -3
--------
-1 = b
then you replace "B" with what you found and it should now look like this:
y=1x-1 or y=x-1 because x is the same as 1x in a equation.
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For any right triangle, the side lengths of the triangle can be put in the equation a2 + b2 = c2 where a, b, and c are the side lengths. A triangle with the side lengths 3 inches, 4 inches, and 5 inches is a right triangle. Which way(s) can you substitute the values into the equation to make it true? Which variable has to match the longest side length? Why?
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Answer:25 miles
Step-by-step explanation: Its 25 because if you divide 125 with 5 you get 25 miles very simple math you probably in 5th or 4th grade. Np btw
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The AB angle is 130° while the AC angle is only 70°.
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Answer:
2.99 cm²
Step-by-step explanation:
(The "..." at the end of the decimal means that number is repeating)
The perimeter of a rectangle is the length around the shape. The equation for a rectangle's perimeter is L + W × 2, with L and W representing length and width, respectively (You multiply the length and width by two because the shape is four-sided, so it has two length sides and two width sides). To find the area of the rectangle, you need to know the individual length and width, so you'll solve for that first.
Since you're only given the perimeter and you know the length is double the width, you'll need to work backwards with this equation. To do this, first divide the perimeter (7 , also written as 7.33...) by 2; this equals 3
, also written as 3.66...
Next, you can find the length and width by determining what two numbers multiply to equal 3.66..., with one number being two times larger than the other number. The way I tend to think of this is that if one number is double the other, then the smaller number is one third of the sum of the two numbers (since the smaller number represents one part of the sum, and the other represents two parts of the sum, which is double the smaller number).
Since the length and width combine to be the divided perimeter, 3.66..., that means two thirds of 3.66... is the longer side (the length), and then the one third of 3.66... is the shorter side (the width). This means the length is 2.44... and the width is 1.22...
Finally, you can solve for the perimeter by dividing the perimeter by two and then subtracting the length squared. The written equation looks like this:
A = P - L²
(A = area, P = perimeter, L = lenth)
Now just insert the numbers into the equation and solve!
The area of the rectangle is 2.99cm²