Answer:
6
Step-by-step explanation:
2(2y - 12) = 0
distribute the 2
2·2y - 2·12 = 0
4y - 24 = 0
add 24 to both sides
4y - 24 + 24 = 0 + 24
4y = 24
divide both sides by 4
(4y)/4 = 24/4
y = 6
1) Convert 1 and 3/4 to an improper fraction. Use this rule A b/c= a*c+b over c
5 x 1*4+3 over 4
2) simplify 1*4 to 4
5 x 4+3 over 4
3) simplify 4+3 to 7
5 x 7/4
4) simplify
35/4
5) Convert to mixed number
8 and 3/4
Answer:
rational
Step-by-step explanation:
The improper fraction 12/4 is a rational number. It is equivalent to the whole number 3, which is an integer.
15 in by 30 in = 150
15 in by 18 in = 90
21 in by 30 in = 210
The answer to (21 in by 15 in) is = 105
21 x 15 = 315
Hope this helps
Rule:
Multiply then divide by 3
Answer:
L = 9
Step-by-step explanation:
Translating this into symbols, we get L = W + 1 and A = 72 = W * L.
Substituting W + 1 for L in the latter equation, we get:
72 = W(W + 1), or:
W^2 + 1W - 72 = 0
This factors into (W + 9)(W - 8) = 0, so that W must be either -9 or +8.
Since W represents width, a physical measurement, we eliminate the negative result and conclude that W = 8 units. Then L = W + 1 = 9 units.
Note that (8)(9) = 72, as we already know.