All categories

3 years ago

Using appropriate properties, find the value of 249² - 248²

Mathematics

1 answer:

Lady_Fox [76]3 years ago

3 0

Answer:

$\boxed{\bold{\huge{\boxed{497}}}}$

Step-by-step explanation:

=> $\sf 249^2 - 248^2$

Using Formula $\sf a^2 - b^2 = (a+b)(a-b)$

Where

a = 249

b = 248

=> $\sf (249+248)(249-248)$

=> $\sf (497)(1)$

=> 497

You might be interested in

What is the slope of the line that passes through the points (-1 , 0) and (3 , 8).?

Zina [86]

Let's apply the formula giving the slope:

m=(y2-y1) /(x2-x1) , let's plug:

m= (8-0) / (3-(-1)) ====> m= 2

5 0

3 years ago

If these triangles are similar,name the missing angles, (25 points )

Ira Lisetskai [31]

Answer:

170

Step-by-step explanation:

4 0

3 years ago

PLS Answer fast! Will mark Brainlest. Worth 20 points!

3241004551 [841]

Answer:

The answer for X is 24 degrees. barinliest and thx plz.

Step-by-step explanation:

add up all of the degrees on the bigger rectangle (94+41). that equals 135. then 180-135=45.

then you add the numbers in the smaller rectangle (180-56). and that equals 24.

7 0

2 years ago

Read 2 more answers

In simplest radical form, what are the solutions to the quadratic equation 6 = x2 – 10x?

vichka [17]

Answer:

$x = 5+\sqrt{31}\,\, and\,\, x=5-\sqrt{31}$

Step-by-step explanation:

We need to solve the quadratic equation

6 = x^2 -10x

Rearranging we get,

x^2-10x-6=0

Using quadratic formula to solve the quadratic equation

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

a= 1, b =-10 and c=6

Putting values in the quadratic formula

$x=\frac{-(-10)\pm\sqrt{(-10)^2-4(1)(-6)}}{2(1)}\\x=\frac{10\pm\sqrt{100+24}}{2}\\x=\frac{10\pm\sqrt{124}}{2}\\x=\frac{10\pm\sqrt{2*2*31}}{2}\\x=\frac{10\pm\sqrt{2^2*31}}{2}\\x=\frac{10\pm2\sqrt{31}}{2}\\x = 5\pm\sqrt{31}$

So, $x=5+\sqrt{31}\,\, and\,\, x=5-\sqrt{31}$

3 0

3 years ago

Read 2 more answers

Total pay before deductions is known as . net pay gross pay total pay

Effectus [21]

Gross pay.................

6 0

3 years ago

Read 2 more answers