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3 years ago

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:

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