X² + 10x +2 = 0 .Complete the square of (x² + 10x + ??)
We know that (10x) is equal to twice the square root of the 1st (x) by ??
10x = 2.x.(??) and ?? = 5 and its square is 25. Then I have to add 25 and subtract 25 so that not to change the equation:
(x² + 10x + 25) -25 +2 =0
(x+5)² -23

8 0

2 years ago

In a company, 37% of 1500 employees are females.work out the number of males in the company.

a_sh-v [17]

Formula:

$y = p\% \times x$
$p = 37\% \div 100 = 0.37$
$y = 0.37 \times 1500 = 555$
so there are 555 woman working.
$1500 - 555 = 945$
there are 945 men working

6 0

3 years ago

Binghamton scholars were counting around the room. The first scholar said "672,"

Gala2k [10]

Answer:

792. each time you add ten

6 0

2 years ago

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the lightest zoo resident is a leaf cutter ant at 5 micrograms. the heaviest is a giraffe weighing 1,000 kilograms. about how ma

Kay [80]

200 times. Because 1000 divided of 5 is 200. You could divide it using the algorithm.