Answer:
Width = 11.7 feet (To 1 decimal place)
Length = 23.5 feet (To 1 decimal place)
Step-by-step explanation:
w = Width
2w= Length
Area of rectangle = length * width
2w * w = 276
(Simplify expression)
2w² = 276
(Divide both sides by 2)
w² = 138
(Square root both sides to isolate w)
w = √138
w = 11.7473401245
w = 11.7 feet ( 1 decimal place)
2 ×11.7473401245 = 23.4946802489
Length = 23.5 feet (To 1 decimal place)
We have from Thales theorem that because the 2 triangles are similar, JM/JK=JN/JL. We have that JN=x, JL=x+24 and that JM=7 and JK=28. Substituting, we get:
x/(x+24)=7/28.
Hence, x/(x+24)=1/4. This leads to 4x=x+24, 3x=24, x=8. We have solved for x=JN and this is equal to 8.
Answer:
the atomic number
Step-by-step explanation:
the atomic number is the number of protons in the shell
Answer:
84
Step-by-step explanation:
This is in the form
ax^2 + bx +c
3x^2 +12x +5
a =3 b = 12 c =5
The discriminant is
b^2 - 4ac
12^2 - 4 * 3 *5
144 - 60
84
