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3 years ago

Anyone know this? Sorry if the image is bad.

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

8 0

The answer is B). graph B

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A^2-2ab+b^2-c^2 This is my question from algebric equation please answer

notka56 [123]

A^2-2ab+b^2=(a-b)^2
(a-b)^2- c^2= (a-b-c)(a-b+c)
[difference of square]

Hope this can help.

6 0

3 years ago

Which equation is the quadratic regression equation for the data shown in the table?

Leona [35]

<u>Answer-</u>

Quadratic regression equation $y=0.392x^2 - 5.583x + 21.167}$

<u>Solution-</u>

Quadratic Regression Equation,

$ax^2+bx+c$

$a=\frac{(\sum x^2y\sum xx)-(\sum xy\sum xx^2)}{(\sum xx\sum x^2x^2)-({\sum xx^2)}^2}$

$b=\frac{(\sum xy\sum x^2x^2)-(\sum x^2y\sum xx^2)}{(\sum xx\sum x^2x^2)-({\sum xx^2)}^2}$

$c=\frac{\sum y}{n}-b\frac{\sum x}{n}-a\frac{\sum x^2}{n}$

Where,

$\sum xx=\sum x^2-\frac{(\sum x)^2}{n}$

$\sum xy=\sum xy-\frac{\sum x\sum y}{n}$

$\sum xx^2=\sum x^3-\frac{\sum x\sum x^2}{n}$

$\sum x^2y=\sum x^2y-\frac{\sum x^2\sum y}{n}$

$\sum x^2x^2=\sum x^4-\frac{(\sum x^2)^2}{n}$

Calculating the values from the table,

a= 0.392

b= -5.583

c= 21.167

∴ Quadratic regression equation,

$y=0.392x^2 - 5.583x + 21.167$

7 0

4 years ago

Juan had 5 candy bars for himself and 4 friends to share with after lunch. Then three other friends joined them. Juan divided th

SOVA2 [1]

Answer:

5/8

Step-by-step explanation:

There are 5 people when 3 more join for a total of 8 people

5 candy bars divided by 8 people

Take the candy bars and divide by the people

5/8

4 0

3 years ago

Reggie Jackson scored 19 points in his last two games. On Saturday, he scored 5 two-point shots and one one point-shot against D

Nookie1986 [14]

So take 5 times 2 and it comes out to 10 then add the one one-point shot to the equation and you have 11 out of 19 of the total points he scored all together and simply devide the last 8 points by two getting the answer of 4 shots of 2 points each was made on reggie jackson game on thursday

4 0

4 years ago

Type a digit that makes this statement true.

olga_2 [115]

Answer:

A number is divisible by 6 if it is divisible by 2 and 3 both.

Consider the following numbers which are divisible by 6, using the test of divisibility by 6: 42, 144, 180, 258, 156.

5 0

2 years ago