2 years ago

What is the mean of 4,7

1 answer:

5 0

Answer:5.5

Step-by-step explanation:first we have to plus 4 and 7 and then we to divide the answer we get by 2 because there are only 2 digits and then the mean is 5.5

hope it helps

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Which of the expressions below can be factored using the difference of squares method?

zlopas [31]

Answer:

The second choice is correct. It can be factored as:

$9x^2-16y^2=(3x-4y)(3x+4y)$

Step-by-step explanation:

The Difference of Squares Method for Factoring

The expression:

$a^2-b^2=(a-b)(a+b)$

Is a widely used method to factor binomials that are expressed as the subtraction of two perfect squares.

The condition for a binomial to be factored by using this method is that both terms must have an exact square root and they must be subtracted.

The last two choices are not valid because they are not a subtraction but an addition.

The first choice is not valid because none of the terms is a perfect square.

The second choice is correct. It can be factored as:

$9x^2-16y^2=(3x-4y)(3x+4y)$

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2 years ago

If n = 4, what is the value of 6n - 3

Arturiano [62]

Answer: 21
steps:
1) 6(4) - 3
2) 24 - 3
3) 21

3 0

3 years ago

Any Quetion in the steps to solve it are shown below 2x-1/4(12x+4)=3

Crazy boy [7]

2x- 3x - 1 =3
-x=4
x=-4

6 0

3 years ago

Which one is the answer for these qution 4x=5(9x+2) A)5/2 B)41/10 C)-10/41 D)10/41

stealth61 [152]

C. -10/41

First use the distributive property to get 4x = 45x + 10
Use subtraction on both sides by 10
Again use subtraction of 4x on both sides
You now have -10 = 41x
Use division to get x alone and you now have -10/41 = x

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3 years ago

Write in standard form a polynomial function with zeros 2, -2, and 1 has a leading coefficient of 1

jarptica [38.1K]

$1\cdot(x-2)(x+2)(x-1)=(x^2-4)(x-1)=x^3-x^2-4x+4$

3 0

2 years ago