All categories

3 years ago

Using the property of squares find the value of the following 24 square - 23 square

Mathematics

2 answers:

UkoKoshka [18]3 years ago

6 0

Answer:

Step-by-step explanation:

Using the follwing property

$x^{2} -y^2=(x+y)(x-y)$

in which x=24 and y=23

$24^2-23^2=(24-23)(24+23)\\=1(47)\\=47$

uysha [10]3 years ago

6 0

Answer:

Step-by-step explanation:

Lets say 24 is x and 23 is y.

the equation would be x^2 - y^2

this is = to (x-y)(x+y)

substitute the numbers in

(24-23)(24+23)

which simplifies to

(1)(47)

which equals 47

You might be interested in

Identify the inverse function of f(x) = VX - 2 + 3.

laiz [17]

Answer:

$\huge\boxed{f^{-1}(x) = (x-3)^2+2}$

Step-by-step explanation:

$f(x) = \sqrt{x-2} + 3$

Replace y = f(x)

$y = \sqrt{x-2} + 3$

Exchange x and y

$x = \sqrt{y-2}+3$

Solve for y

$x = \sqrt{y-2}+3$

Subtracting both sides by 3

$x - 3 = \sqrt{y-2}$

Taking square on both sides

$(x-3)^2 = y -2$

Adding 2 to both sides

$y = (x-3)^2+2$

Substitute y = $f^{-1}(x)$

$f^{-1}(x) = (x-3)^2+2$

7 0

3 years ago

Read 2 more answers

If something is marked down 40% what expression in a new retail price

trapecia [35]

In terms of x it would either be .60x or x-.40x

7 0

3 years ago

glen is looking into buying a piece of land. he estimates that the land measures 700 yd by 50 yd. the land is actually 720 yd by

Fudgin [204]

Answer:

0.595

Step-by-step explanation:

The computation of the percent error is as follows

Actual area is

= (720-yd × 120-yd)

= 86,400 square yards.

Estimated area is

= (700-yd × 50-yd)

= 35,000 square yards

Now

Error = (86,400 - 35,000)

= 51,400 square yards

Percent error is

= 51,400 ÷ 86,400

= 0.595

7 0

3 years ago

Find the probability that a Type A bulb lasts at least 300 hours and a Type B bulb lasts at least 400 hours.

barxatty [35]

Answer:

$P(X>3)P(X>4)=(1-F_1(3))(1-F_2(4))$

Step-by-step explanation:

We require more information by I will explain in principle:

If Type A has at least 300 hours and Type B at least 400 hours.

$(X>3)(Y>4)=P(X>3)P(X>4)$

You need to determine the Probability density function of X and Y and then subtract 1 from both

$P(X>3)P(X>4)=(1-F_1(3))(1-F_2(4))$

This will give you the probability of the expression.

5 0

3 years ago

Hurry!!! Determine whether the random variable described is discrete or continuous. The time of a randomly chosen city employee

jonny [76]

Discrete is the correct answer because it’s random

4 0

3 years ago

Read 2 more answers