-9 is a rational number. Rational numbers are numbers that can’t be written as a simple fraction like pi (3.14...etc)
Answer:
w = 7 cm
Step-by-step explanation:
Volume = 252 cm³
Height, h = 3cm
Let width = w
Length, l = w + 5
Volume of rectangular prism, V = l * w * h
252 = (w + 5) * w * 3
252 = (w + 5) * 3w
252 = 3w² + 15w
3w² + 15w - 252 = 0
w² + 5w - 84 = 0
w² + 12w - 7w - 84 = 0
w(w + 12) - 7(w + 12) = 0
(w + 12) = 0 or (w - 7) = 0
w = - 12 or w = 7
w cannot be negative
Hence, w = 7 cm
Answer:
2x^2-2x+9
Step-by-step explanation:
5*(n-2) = 29
5n-10=29 (distributive property)
5n-10+10=29+10 (do operations to both sides to isolate variable)
5n/5 = 39/5 (further isolate)
n = 7.8 (answer)
Your number is 7.8.
there would have to be a table here so i could see
