‘| |’ means modulus.
It’s turns the internal value positive.
We get a negative answer while finding the area of a triangle because there points in the quadrant other than the 1st quandrant i.e where all values are positive
Area of a triangle can never be negative, so we use modulus

7 0

4 years ago

30 Points Solve for x. 8x2−3=2 x=±10√4 x=±10√2 x=±5√2 x=±5√4

ANTONII [103]

Answer:

$x=(+/-)\frac{\sqrt{10}}{4}$

Step-by-step explanation:

we have

$8x^{2}-3=2$

adds 3 both sides

$8x^{2}=2+3$

$8x^{2}=5$

Divide by 8 both sides

$x^{2}=5/8$

square root both sides

$x=(+/-)\sqrt{\frac{5}{8}}\\ \\x=(+/-)\frac{\sqrt{5}}{2\sqrt{2}} \\ \\x=(+/-)\frac{\sqrt{10}}{4}$

5 0

3 years ago

If 54% of a town population received the first two polio shots and 10% of these did not receive the third,what percent of the to

yulyashka [42]

Answer:

48.6

Step-by-step explanation:

Here we know that the answer can't be higher than 54%, as this is the proportion who got the first two shots and a person can't get the third without getting the first two.

So, from this 54%, the 10% didn't get the third shot. In other words, a tenth of this 54% didn't get the 3rd shot. Or in other form, the other 90% do got the third shot. We need to calculate the 90% of 54%.

We do this by simply multiplying 54*0.9=48.6

So, 48.6% of population got the 3rd shot, and 5.4% got the first 2 shots but not the 3rd.

8 0

3 years ago