X*0.3 = 42
X=42/0.3 = 140
X*0.25 = 42
X=42/0.25 = 168
168-140= 28
30% one by 28.
2 consecutive odd numbers...x and x + 2
" product " means multiply
x(x + 2) = 143
x^2 + 2x = 143
x^2 + 2x - 143 = 0 <===
Answer:
Step-by-step explanation:
Standard form means that its ranked from the polynomial of the highest degree to the one of the lowest.
Hope this helps.
Answer:
$22.50
Step-by-step explanation:
Simply multiply 90 by the amount taken off:
90(1 - 0.75)
90(0.25)
22.50
140 is 14 tens combined so that's the answer.