(X+7)-11 aka Eddie was x-4 years old 11 years ago
Answer:
<u>4</u><u>x</u><u>²</u><u> </u><u>-</u><u> </u><u>1</u><u>6</u><u>.</u>
Step-by-step explanation:
(2x-4)² =?
(2x-4)² = (2x)² - (4)²
= <u>4x² - 16.</u>
Answer:
125 adults
175 children
Step-by-step explanation:
3900=8c+20a
300=c+a
c=300-a
substitute
3900=8(300-a)+20a
reduce
3900=2400-8a+20a
1500=12a
a=125 adults
substitute for a
c=300-a
c=300-125
c=175 children
Answer:
Miles in 10 gallons = 195
Miles in 1 gallon = 195/10 = <u>1</u><u>9</u><u>.</u><u>5</u>
Miles in 18 gallons = 19.5 × 18 = <u>3</u><u>5</u><u>1</u><u> </u><u>miles</u><u>.</u>
The doctor can typically see 18 patients in 7 and 1/2 hours
