ANSWER
80%
EXPLANATION
Donovan got 20 questions correct and 5 questions incorrect.
This means that the total number of questions he attempted in the test is the sum of correct and incorrect questions:
Total = 20 + 5
Total = 25
To find the percentage of correct answers, we have to divide the number of correct answers by the total number of questions attempted and multiply by 100 (per cent).
That is:
![\begin{gathered} \frac{20}{25}\cdot\text{ 100 = }\frac{4}{5}\cdot\text{ 100} \\ =\text{ 80\%} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B20%7D%7B25%7D%5Ccdot%5Ctext%7B%20100%20%3D%20%7D%5Cfrac%7B4%7D%7B5%7D%5Ccdot%5Ctext%7B%20100%7D%20%5C%5C%20%3D%5Ctext%7B%2080%5C%25%7D%20%5Cend%7Bgathered%7D)
That is the percentage of correct answers.
Answer:
1/2
Step-by-step explanation:
from one point to another it goes up 1 and over two. so rise over run, 1 over 2
x = 6
Step-by-step explanation:
It's based on similarity of triangles
DEF ~ △XYZ
![\implies \mathsf{ \frac{DE }{ XY } = \frac{EF}{YZ} = \frac{ FD}{ZX}}](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%20%5Cfrac%7BDE%20%7D%7B%20XY%20%7D%20%3D%20%20%5Cfrac%7BEF%7D%7BYZ%7D%20%3D%20%20%5Cfrac%7B%20FD%7D%7BZX%7D%7D)
The sides should be taken in order, like the triangles start with DE and XY so, we'll proportionate DE and XY and then the next two sides and so on.
I'm using
to get the value of x.
[You can use any two fractions out of the three given above. ]
![\implies \mathsf{ \frac{10}{x - 1} = \frac{8}{4} }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%20%5Cfrac%7B10%7D%7Bx%20-%201%7D%20%3D%20%20%5Cfrac%7B8%7D%7B4%7D%20%20%7D)
![\implies \mathsf{ \frac{10}{x - 1} = 2 }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%20%5Cfrac%7B10%7D%7Bx%20-%201%7D%20%3D%20%202%20%20%7D)
![\implies \mathsf{ 10 = 2 (x - 1) }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%2010%20%3D%20%202%20%28x%20-%201%29%20%7D)
![\implies \mathsf{ 10 = 2 x - 2 }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%2010%20%3D%20%202%20x%20-%202%20%7D)
![\implies \mathsf{ 10 + 2= 2 x }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%2010%20%20%2B%202%3D%20%202%20x%20%20%7D)
![\implies \mathsf{ 1 2= 2 x }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%201%202%3D%20%202%20x%20%20%7D)
![\implies \mathsf{ x = 6 }](https://tex.z-dn.net/?f=%20%5Cimplies%20%5Cmathsf%7B%20x%20%3D%206%20%7D)
Hence, the value of x is 6.
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Answer:
The answere is C
Step-by-step explanation: