Answer:
-18 is the ans you can calculate it
We do completing the square as follows:
Write the equation in such a way that the constants are on one side.
<span>x^2 + 2x = 13
We add a number to both sides that will complete the square on the side which contains the variable x.
</span><span>x^2 + 2x + 1 = 13 +1
We factor the side which contains the variable x.
(x+1)^2 = 14
Therefore, we should add 1 in order to complete the square from the given equation.</span>
441 divided by 3 would give you 147
441 / 3 = 147
The answer is 30
Explanation:
So all of the angles in a triangle add up to 180 degrees and so if you split the triangle into separate triangles then you can add up the angles that are known and subtract from 180 to get the size of the missing angle e.g 90 + 56 = 146, 180 -146 = 34 for the other triangle 90 + 26 = 116, 180 - 116 = 64 and so 64 - 34 = 30
Explanation:
Discount = 20%
The cost of 5 notebooks = $10
The cost of 1 notebook before applying discount = $10/5 = $2
Applying the discount on the original price:
Discount = $10 × 20% = 10 × 0.20
Discount = $2
The sales price of the 5 notebooks = original price - discount
The sales price of the 5 notebooks = $10 - $2
The sales price of the 5 notebooks = $8
The sales price of 1 notebook = $8/5
The sales price of 1 notebook = $1.6
The amount saved per notebook = The cost of 1 notebook before applying discount -
$2 -
