X=4
After squaring both sides, you get
4(x+5)=x^2-20x+100
Multiply
4x+20=x^2-20x+100
Collect like terms
4x+20-x^2+20x-100=0
Reorder
24x-80-x^2=0
Change signs & Write as difference. You end up with
x^2-4x-20x+80=0
Factor
x-4=0 , x-20=0
4=4 , 0=20
x=4
Answer:
I think that the answer would be 8/15
"I am a figure with six layers .each of my layers is the same."---> using this sentences, you can conclude that the shape is cube because cube made of 6 similar square.
<span>my bottom layer has a perimeter of 28 units ---> Using this sentences, you can know the square perimeter is 28. Then the square side would be:
square perimeter= 4* side
28= 4* sides
side= 7
Then, the volume of the cube would be:
cube volume= side^3
cube volume= 7^3= 343 cubic units
I think there is a typo somewhere in this question. The calculation should be true, but it is not in 200-300 range. The volume that in 200-300 would be when the side is 6 unit(volume=216), but the perimeter should be 24 not 28.
If the perimeter 28, volume= </span>343 <span>
If the perimeter 24, volume= 216</span>
Answer:
A. With a p-value of 0.817, that there is no statistically significant evidence of a difference in average anticipated amount of time studying between the men and women.
Step-by-step explanation:
The p-value is greater than the confidence level of 0.05, so we accept the null hypothesis (difference = 0). Therefore, we conclude there is no statistically significant difference between the average times for men and women.
The value of x is: A. 38°
