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2 years ago

This is timed pleaseeeeee hurry!!!!!! see picture

Mathematics

2 answers:

KIM [24]2 years ago

5 0

I think it’s c I’m not quite sure try Desmos for graphing calculator

astra-53 [7]2 years ago

4 0

Im pretty sure the answer is c.

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At a carnival, contestants are asked to keep rolling a pair of dice until they roll snake eyes. The number of rolls needed has a

Stells [14]

Answer:

The two numbers of rolls are 25.2 and 46.8.

Step-by-step explanation:

The Chebyshev's theorem states that, if X is a r.v. with mean µ and standard deviation σ, then for any positive number k, we have

$P (|X -\mu| < k\sigma) \geq (1-\frac{1}{k^{2}})$

Here

$(1-\frac{1}{k^{2}})=0.75\\\\\Rightarrow \frac{1}{k^{2}}=0.25\\\\\Rightarrow k=\sqrt{\frac{1}{0.25}}\\\\\Rightarrow k=2$

Then we know that,

$|X - \mu| \geq k\sigma,\\\\ \Rightarrow \mu - k\sigma \leq X \leq \mu + k\sigma$ .

Here it is given that mean (µ) = 36 and standard deviation (σ) = 5.4.

Compute the two values between which at least 75% of the contestants lie as follows:

$P(\mu - k\sigma \leq X \leq \mu + k\sigma)=0.75\\\\P(36 - 2\cdot\ 5.4 \leq X \leq 36 + 2\cdot\ 5.4)=0.75\\\\P(25.2\leq X\leq 46.8)=0.75$

Thus, the two numbers of rolls are 25.2 and 46.8.

8 0

2 years ago

A polygon is broken up into 4 non-overlapping triangles by drawing lines from one vertex to all other non-adjacent vertices. Wha

Arte-miy333 [17]

Octagon
hope this helps!
-MalStar

5 0

3 years ago

Read 2 more answers

15 When (x)(x - 5)(2x + 3) is expressed as a

wlad13 [49]

Given:

The polynomial is

$x(x-5)(2x+3)$

To find:

The standard form of the polynomial and correct statement for the polynomial.

Solution:

Let, $P(x)=x(x-5)(2x+3)$

On multiplication, we get

$P(x)=(x^2-5x)(2x+3)$

$P(x)=x^2(2x)+x^2(3)-5x(2x)-5x(3)$

$P(x)=2x^3+3x^2-10x^2-15x$

$P(x)=2x^3-7x^2-15x$

Here,

Constant term is 0, leading coefficient is 2, degree is 3 and number of terms is 3.

Therefore, the correct option is 2.

5 0

2 years ago

Which of these lines passes through the point (1,-1) and has a slope of -3?

olga nikolaevna [1]

Answer:

Step-by-step explanation:

We can write the equation using the point and the slope .

Formula we need to use is the point slope formula

Which is given by

Y-y1= m(X-x1)

Here given that (x1,y1)=(1,-1) and m = -3

x1= 1

y1 = -1

so equation is

Y-(-1) = -3 (x-1)

Distribute the slope

y+1 = -3x+3

y= -3x+3-1

y = -3x + 2

So the equation is

y =-3x +2

7 0

2 years ago

What is the value of 4x^-3y^3 for x = 3 and y=-1?

il63 [147K]

Answer:

− 23 /27

its a fraction

Step-by-step explanation:

4 0

2 years ago