Answer:
<h3>x = -3 , x = 3</h3>
Step-by-step explanation:
7x² - 3 = 60
7x² - 3 - 60 = 0
7x² - 63 = 0
Simplify the terms
Divide both terms by 7
That's
x² - 9 = 0
Solve the quadratic equation
Use difference of two squares
That's
a² - b² = ( a + b)(a - b)
x² - 9 = 0
(x + 3)(x - 3) = 0
x + 3 = 0 x - 3 = 0
x = - 3 x = 3
Hope this helps you
Answer:
$1.3
Step-by-step explanation:
(11.75 - 5.25) / 5 = 1.3
Answer:
1: 75 degrees
2: 112 degrees
3: 125 degrees
4: 67 degrees
Step-by-step explanation:
The answer is <u>143 miles.</u>
<h3>
EXPLANATION</h3>
The ratio between Dory's miles and Karly's miles is 11:1. This means that we need to <em>divide 156 by 12, </em>which is <u>13.</u>
Because Dory's miles make up 11/12 of the total miles, we need to take 1/12 (which is 13) from the 156 to get the final answer of <u>143 miles.</u>