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mrs_skeptik [129]
3 years ago
9

I need help please .

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
3 0

Answer:

-7-6b+3b-5

= -12-3b

= - 3(4+b)

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A manufacturer knows that their items have a normally distributed length, with a mean of 13.2 inches, and standard deviation of
Lana71 [14]

Answer:

0.5358

Step-by-step explanation:

Given

mean = μ = 13.2 inches

and

SD = σ = 2.2 inches

We have to find z-score for the given value 13.4 first

z-score = (x-μ)/σ

=  (13.4-13.2)/2.2

=0.2/2.2

=0.0909

We have to find the area to the left of given z-score

The area to the left is 0.5358

So, the probability of choosing an item with length less than 13.4 is 0.5358 ..

5 0
3 years ago
Please help i will give 30 points and the brainlest to the best answer also please show ur work thxs
elixir [45]

Answer:

a

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
Explain what the following statement means: Polynomials are closed under the operations of addition and subtraction. Provide one
kirza4 [7]
1. Polynomials are closed under the operations of addition and substraction mean that:

If we add two polynomials, the result is still a polynomial (so still in the set of polynomials)

Also, If we subtract 2 polynomials, the result is a polynomial.

2. Example: given the polynomials :

M(x)= 3x^{2}+5x-1 and N(x)=-6 x^{4}+9 x^{3}+ x^{2} -2x-1

Addition example: 

M(x)+N(x)=(3x^{2}+5x-1)+(-6 x^{4}+9 x^{3}+ x^{2} -2x-1)=

-6 x^{4}+9 x^{3}+x^{2} +3x^{2}-2x+5x-1-1=-6 x^{4}+9 x^{3}+4x^{2}x-2


Subtraction example: 

N(x)-M(x)=(-6 x^{4}+9 x^{3}+ x^{2} -2x-1)-(3x^{2}+5x-1)

=-6 x^{4}+9 x^{3}+ x^{2} -2x-1-3x^{2}-5x+1=
=-6 x^{4}+9 x^{3}+ x^{2} -3x^{2}-2x-5x-1+1=-6 x^{4}+9 x^{3}-2x^{2}-x

So both M(x)+N(x) and N(x)-M(x) are polynomials
7 0
4 years ago
Read 2 more answers
if the surface area of 100 boxes is 24,800 and 1 can of paint will cover 14,000 Sq in how many cans of paint will I need to buy
STALIN [3.7K]
177 cans you have to buy
3 0
4 years ago
PLEASE HELP!!!!! What values complete each statement? Enter your answers in the boxes. (16‾‾‾√)2 = _ in simplest form. By the Po
mario62 [17]

We are given expression: (\sqrt{16})^2.

Square root in exponent form is power \frac{1}{2}.

Therefore, \sqrt{16} = 16^{1/2}.

Now, replacing square root of 16 by 16^{1/2} in original expression we are given, we get

(\sqrt{16})^2 = (16^{1/2})^2 = (16)^2/2 = 16.

Therefore,

<h3> (\sqrt{16})^2= 16 in simplest form. By the Power of Power rule, (16^{1/2})^2=16^{2/2} . So, 16^{1/2} must equal\sqrt{16} in radical form.</h3>
8 0
4 years ago
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