To solve, first let’s define regrouping:<span>
<span>=> Regrouping involves carrying and borrowing during subtraction and addition of the given numbers.
So let us have the non-regrouping decimal number:
=> 8.4
Next, the other regrouping decimal
=> 5.7
So now let us show how it becomes 14.1:
8.4
+5.7
14.1
Starting from the right, 4 + 7 is equal 11, so bring down 1 and carry 1. Now 8+5 = 13, but 13 + carry 1 = 14
<span>Thus, the answer is 14.1</span></span></span>
a=9/14
b=32/8
c=25/13
That is the answer for these questions.
Since we know that the measure of one of the angles is 90°, we know that we have a right triangle with legs 1 and

. Now lets apply the Pythagorean theorem:

, to find our hypotenuse:




Now that we know that the measure of the hypotenuse is 2, lets use the trig function sine to find one of the angles that we are going to call

.
Remember that

, so:



Now that we have two angles, remember that the sum of the interior angles of a triangle is 180°; lets use that to find our final angle

:



We can conclude that the measure of the hypotenuse of our triangle is 2, and the measure of its missing angles are 30° and 60° respectively.
(1 1/2 × $8.40)×7 = x
($12.60)×7 = x
$88.50 = x
Therefore, x = $88.50