Answer:
$12
Step-by-step explanation:
setting up a proportion and putting 20 of 100 and 60 over x, we multiply 60 and 20 then divide one hundred from both sides leabing. We should have 100/x = 1200/100. Doing this gives us x = 12.
43miles = 1 gallon
69.202 kilo = 43 miles
69.202 kilo = 1 gallon
1 gallon = 3.785 liters
69.202 kilo = 3.785 liters
18.28322…. = 1 liter
so the answer should be 18.3 kilo if rounded to the nearest tenth.
Answer:
11
Step-by-step explanation:
<h2>You are technically using PEMDAS, since x equals 6 heres what you do. 2 x (6 + 1) -3</h2><h2>Perenthesies first: 6 + 1 =7 now you mulitiply</h2><h2>2 x 7 = 14 so then subtract 14 - 3= 11</h2><h2 />
Answer:
x = 4 + sqrt(73) or x = 4 - sqrt(73)
Step-by-step explanation by completing the square:
Solve for x:
(x - 12) (x + 4) = 9
Expand out terms of the left hand side:
x^2 - 8 x - 48 = 9
Add 48 to both sides:
x^2 - 8 x = 57
Add 16 to both sides:
x^2 - 8 x + 16 = 73
Write the left hand side as a square:
(x - 4)^2 = 73
Take the square root of both sides:
x - 4 = sqrt(73) or x - 4 = -sqrt(73)
Add 4 to both sides:
x = 4 + sqrt(73) or x - 4 = -sqrt(73)
Add 4 to both sides:
Answer: x = 4 + sqrt(73) or x = 4 - sqrt(73)
