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2 years ago

What is a2-b2 equal to?

Mathematics

1 answer:

ycow [4]2 years ago

3 0

AZ+b?=is equal to
Step-by-step explanation:
One Solution.
a? + b2= c2, is called the Pythagorean Theorem.
For example
42+32=62
16+9= c2
25=62
Second solution: Formula of algebra
a2+62
Cause,
(a+b)2= a?+ b2 + 2ab
So, a?+ b2= (a+b)2-2ab

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(-2,6)(6,6)(1,-6)(-7,-6) find the perimeter to the parallelogram

Butoxors [25]

Answer:

42 units

Step-by-step explanation:

Lengths:

(-2,6)(6,6)

6 - -2 = 8

(1,-6)(-7,-6)

1 - - 7 = 8

(6,6)(1,-6)

sqrt[(-6-6)² + (1-6)²]

sqrt(169) = 13.

(-2,6)(-7,-6)

sqrt[(-6-6)² + (-7--2)²]

sqrt(169) = 13

Perimeter = 8 + 8 + 13 + 13

42 units

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2 years ago

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The median of a data set 8, 21, 17, and 13 is 15. If 17 is changed to 18, what will be the new median? a. 15.5 c. 50 b. 17.5 d.

lubasha [3.4K]

Answer:

Option A) 15.5 is correct

The new median for the new data set is 15.5

Step-by-step explanation:

Given data set is 8,21,17,13

To find the median :

First order the given set of data into least to greatest

The ordered set is 8,13,17,21

Since the given set of data is even

We can take midvalues of data in the set

Median is the mean of two middle values in the data set

$Median=\frac{13+17}{2}$

$=\frac{30}{2}$

$=15$

Therefore Median=15 ( given )

Given that if 17 is changed to 18 then the given set of data 8,21,17,13 is changed into new set 8,21,18,13

To find the median :

First order the new set of data into least to greatest

The ordered set is 8,13,18,21

Since the given set of data is even

We can take two midvalues of new data in the set

Median is the mean of two middle values in the data set

$Median=\frac{13+18}{2}$

$=\frac{31}{2}$

$=15.5$

Therefore New Median=15.5

Therefore option A) 15.5 is correct

The new median for the new data set is 15.5

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3 years ago

Write an equation for the line described in standard form with x-intercept 4 and y-intercept 5

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Answer:

Equation $( \frac{5}{4}) x + y = 5$ is in the standard dorm.

Step-by-step explanation:

Here, the x - intercept = 4 , so ( 4,0) is a point on the line.

and the y - intercept = 5, so ( 0,5) is a point on the line.

So, the slope of the equation is given as = $\frac{y_2 - y_1}{x_2-x_1 } = \frac{5 -0}{0-4} = -\frac{5}{4}$

Now, the SLOPE INTERCEPT FORM of an equation is :

y = mx + b: here m = slope and b = y- intercept

or, $y =-( \frac{5}{4}) x + 5$

Now, standard form is Ax +By = C

So, the standard form is $( \frac{5}{4}) x + y = 5$

Hence, the above equation $( \frac{5}{4}) x + y = 5$

is in the standard dorm.

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2 years ago

How can I find the least common multiple of two or more numbers ?

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Example: 30 and 42

Factor them.

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2 x 3 x 5 x 7 = 210, the LCM

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3 years ago

Of 24 tulips 1/3 are red. how many tulips are red?

Soloha48 [4]

6 tulips are red out of 24

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3 years ago

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What is a2-b2 equal to?​

What is a2-b2 equal to?