Answer:d
Step-by-step explanation:
D. No, because not enough is information given to prove the triangles congruent by SAS
To solve the equation you can first subtract 4x from both sides. Then,
![\begin{gathered} 4x-5=8+4x\rightarrow\text{original equation} \\ 4x-4x-5=8+4x-4x \\ 0-5=8+0 \\ -5=8 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%204x-5%3D8%2B4x%5Crightarrow%5Ctext%7Boriginal%20equation%7D%20%5C%5C%204x-4x-5%3D8%2B4x-4x%20%5C%5C%200-5%3D8%2B0%20%5C%5C%20-5%3D8%20%5Cend%7Bgathered%7D)
Since you arrive at something false, -5 is not equal to negative 8, so the equation has no solution.
Sorry was answering wrong question.
Answer:
The probability of randomly select an adult that has between 18 and 29 years old and use social media is 22.3%
Step-by-step explanation:
As the test is targeted to 18-to-29-year-old adults using social media, we want to know the probability that a randomly selected adult uses social media and belong to the study group.
To achieve this, we have this data:
- 36% of all adults do not use social media
- 75% of all adults are >30 years old.
- The percentage of population that is <em>either</em> 18-29 years old <em>or</em> uses social media is 66.7%
Using the last data we have that
![P(social\,media=yes\, or\,18-29=yes)=P(social\,media=yes)+P(18-29=yes)-P(social\,media=yes\, \&\,18-29=yes)\\\\0.667=(1-0.36)+(1-0.75)-P(social\,media=yes\, \&\,18-29=yes)\\\\0.667=0.64+0.25-P(social\,media=yes\, \&\,18-29=yes)\\\\P(social\,media=yes\, \&\,18-29=yes)=0.64+0.25-0.667=0.223](https://tex.z-dn.net/?f=P%28social%5C%2Cmedia%3Dyes%5C%2C%20or%5C%2C18-29%3Dyes%29%3DP%28social%5C%2Cmedia%3Dyes%29%2BP%2818-29%3Dyes%29-P%28social%5C%2Cmedia%3Dyes%5C%2C%20%5C%26%5C%2C18-29%3Dyes%29%5C%5C%5C%5C0.667%3D%281-0.36%29%2B%281-0.75%29-P%28social%5C%2Cmedia%3Dyes%5C%2C%20%5C%26%5C%2C18-29%3Dyes%29%5C%5C%5C%5C0.667%3D0.64%2B0.25-P%28social%5C%2Cmedia%3Dyes%5C%2C%20%5C%26%5C%2C18-29%3Dyes%29%5C%5C%5C%5CP%28social%5C%2Cmedia%3Dyes%5C%2C%20%5C%26%5C%2C18-29%3Dyes%29%3D0.64%2B0.25-0.667%3D0.223)
The probability of randomly select an adult that has between 18 and 29 years old and use social media is 22.3%