Answer:
Since 1,-3 and 5 are roots...
Its means
x=1, and x=-3 and x=5
When these number cross the equal sign to the left
The factors become
x-1
x+3
x-5
Answer OPTION C
13 red, 5 blue, 7 green...for a total of 25
percentage of green ones is : 7/25 = 0.28 = 28% <==
<h2>
Similar Triangles</h2>
Similar triangles have the same proportions of sides, but they have different side lengths.
To solve for missing sides in similar triangles, we can set up a proportion.
For instance, let's say that side <em>a</em> in Triangle A corresponds with side <em>b</em> in Triangle B. Let's say that side <em>h</em> in Triangle A also corresponds with side <em>k</em> in Triangle B. Then, it would be true that:
We need to make sure of a couple things:
- The numerators and denominators of fractions are corresponding
- The numerators describe one triangle, and the denominators describe another (can't switch, otherwise the calculations will get messed up)
<h2>Solving the Question</h2>
We're given two triangles (do you see it?).
These two triangles are similar.
We must solve for the length of side BC in Triangle ABC.
- We're given the length of DE, the corresponding side in Triangle ADE.
- We're also given the lengths of bottom sides, 20 units and 30 + 20 = 50 units.
Set up a proportion:
![\dfrac{x}{15}=\dfrac{50}{20}\\\\\dfrac{x}{15}=\dfrac{5}{2}\\\\x=\dfrac{5}{2}*15\\\\x=\dfrac{75}{2}\\\\x=37.5](https://tex.z-dn.net/?f=%5Cdfrac%7Bx%7D%7B15%7D%3D%5Cdfrac%7B50%7D%7B20%7D%5C%5C%5C%5C%5Cdfrac%7Bx%7D%7B15%7D%3D%5Cdfrac%7B5%7D%7B2%7D%5C%5C%5C%5Cx%3D%5Cdfrac%7B5%7D%7B2%7D%2A15%5C%5C%5C%5Cx%3D%5Cdfrac%7B75%7D%7B2%7D%5C%5C%5C%5Cx%3D37.5)
Therefore, the unknown length is 37.5 units.
<h2>Answer</h2>
37.5 units
Answer: Y=mx+b
B is the y intercept and the slope is M
So the answer is Y= -4x+ 0
Step-by-step explanation:
Answer:
x° = 50°
Step-by-step explanation:
x° + 130° = 180° (adjacent angles add up to 180°)
x° = 180° - 130°
x° = 50°