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qaws [65]
3 years ago
11

Can someone please help

Mathematics
1 answer:
tino4ka555 [31]3 years ago
7 0

Answer:

5.6<x<∞

Step-by-step explanation:

x has to be no less than or equal to 2.8+2.8. So, x>5.6

x is less than∞

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April has cards. She wants to put all 108 cards but in 56. There is 5 pages. How many cards will fit?
Allisa [31]
I think 10.4cards will fit
5 0
3 years ago
Easy geometric shapes question #4 help please!
FromTheMoon [43]

Answer:

254.469 inches^3

Step-by-step explanation:

v=(pi)(r)^2(h)

pi(3)^2(9)

pi(9)(9)

pi(81)

254.469

3 0
3 years ago
What can you say about the end behavior of the function f(x) = -ln(2x)+4?
galina1969 [7]

The end behavior of the function is the one in option C.

<em>"One end increases and one end decreases"</em>

<h3>What can we say about the end behavior?</h3>

Here we have the function:

f(x) = -ln(2x) + 4.

Remember that for the natural logarithm, as x tends to zero the function tends to negative infinity.

And as x tends to infinity, the natural logarithm tends to infinity.

So, for our function where we have a negative sign before the logarithm, as x tends to zero the function tends to infinity and as x tends to infinity the function tends to zero.

Then the correct option is C:

<em>"One end increases and one end decreases"</em>

If you want to learn more about end behaviors:

<em>brainly.com/question/1365136</em>

<em>#SPJ1</em>

4 0
2 years ago
What are the roots of the polynomial equation x3 - 6x = 3x2 - 8? Use a graphing calculator and a system of equations.
makkiz [27]

Answer:

d : 4, 1, -2.

Step-by-step explanation:

There's no need for a calculator in my opinion because we can use the rational root theorem which states that the equations of this form:

\sum_{i=0}^{n} a_{i}x^i = 0 = a_{0} + a_{1}x + a_2x^2 + ... + a_nx^n = 0\\ a_i \in \mathbb{Z}

Have rational roots, than the roots are of the form: \frac{k \cdot a_o}{p \cdot a_n}, \ where \ k, p \in \mathbb{Z}.

Rewriting the equation we have:

x^3 - 3x^2 -6x + 8 = 0\\By \ our\ previous \ claim \ x \in D_8 \ where \ D_n \ the \ set \ of \ divisors \ of \ n.\\D_8 = \{\pm 1, \pm 2, \pm 4, \pm 8\} \\We \ plug \ in \ some \ number from \ D_8.\\Letting \ x = -2;\\(-2)^3 -3(-2)^2 -6(-2) + 8 = 0 \ \ \ Thus \ x+2 \ is \ a \ factor.\\We \ can \ now \ simplify \ the \ eq. \ using \ Polynomial \ Long \ Division.

x^3 -3x^2 -6x + 8 = (x+2)(Q(x))\\To \ find \ Q \ we \ divide \ the \ original \ equation \ by \ x + 2; which \ yields:\\Q(x) = x^2 - 5x + 4.\\So \ we \ can \ use \ the \ quadratic \ formula \ to \ find \ the \ roots:\\x = 4,x = 1. \\Thus \ x \in \{-2, 1, 4\}. \ \ These \ are \ all \ the \ roots.

5 0
4 years ago
Probability The average time between incoming calls at a switchboard is 3 minutes.if a call has just come in,the probability tha
Stels [109]

Answer:

a) 0.1535

b) 0.4866

c) 0.8111

Step-by-step explanation:

The probability that the next call come within the next t minutes is:

  • p(t) = 1 -e ^{- t/3}

According to this model,

a) the probability that a call in comes within 1/2 minutes is p(t) = 1 -e ^{- (1/2)/3} =0.1535

b) the probability that a call in comes within 2 minutes is  p(t) = 1 -e ^{-2/3} =0.4866

c) the probability that a call in comes within 5 minutes is  p(t) = 1 -e ^{-5/3} =0.8111

6 0
3 years ago
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