Answer:
<u>Use the following identity:</u>
- a³ + b³ + c³ = 3abc if a + b + c = 0
<u>Substitute:</u>
<u>and get:</u>
- (3x)³ + (5y)³ + (4z)³ = 3(3x)(5y)(4z)
- 27x³ + 125y³ + 64z³ = 180xyz
Use Pythagorean theorem to solve.
a^2 + b^2 = c^2
6^2 + b ^2 = 14^2
36 + b^2 = 196
Subtract 36 from both sides.
b^2 = 196-36
b^2 = 160
Take the square root of both sides.
b = sqrt 160
As a decimal
b = 12.649
As a simplified radical
b = 4sqrt10
False, to get pi is pi= circumference divides by diameter
Answer:
perimeter is sum of all four sides; two of which are '4j' and other two are 60 inches each
Step-by-step explanation:
P= 2(4j) + 2(60)
We know perimeter is 400 inches
400 = 8j + 120
8j = 280
j = 35
You can converte them to a common denominator like 6. 1/2 would be 3/6. 2/3 would be 4/6.