Answer:
perfect square trinomial
Step-by-step explanation:
You set up a proportion so: 12/x and 40/100
Cross multiply so 12 times 100 = 1200
and 40 times x = 40x
1200 divided by 40 = 30 minutes total
You know that he already know he spent 12 minutes doing it so
30 - 12 = 18 more minutes
Answer:
0.5152
Step-by-step explanation:
Answer:
4 cents
Step-by-step explanation:
1.00 divied by 25 =0.04 aka 4 cents
11) 7 + -10+(4(5+-3)) = 7+-10+8=5
12) (12 +-10)+3x+-1(2x+4x), 12+-10x+3x+-2x+-4x = 12+-13x