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son4ous [18]
3 years ago
13

Maria va a trabajar este verano en una peluqueria canina donde le ofrecen dos tipos de contratos. Con el contrato A cobra 800€ a

l mes, y con el contrato B cobra 300€ fijos mas 10 € por cada servicio de peluquería que realiza. ¿que contrato le conviene más?
Mathematics
1 answer:
Assoli18 [71]3 years ago
4 0

Answer:

Which contract is better relies on how many hairdressing services she makes each month. If she makes less than 50 hairdressing services, contract A is better, but if she makes more than 50 hairdressing services, contract B is better

Step-by-step explanation:

Let's call:

x: number of hairdressing services made

y: salary received

With contract A:

y = 800

With contract B:

y = 300 + 10x

If contract A and B are equal:

300 + 10x = 800

10x = 800 - 300

x = 500/10

x = 50

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each of the 20 balls is tossed independently and at random into one of the 5 bins. let p be the probability that some bin ends u
amm1812

if p is the probability that some bin ends up with 3 balls and q is the probability that every bin ends up with 4 balls. pq is 16.

First, let us label the bins with 1,2,3,4,5.

Applying multinomial distribution with parameters  n=20  and  p1=p2=p3=p4=p5=15  we find that probability that bin1 ends up with 3, bin2 with 5 and bin3, bin4 and bin5 with 4 balls equals:

5−2020!3!5!4!4!4!

But of course, there are more possibilities for the same division  (3,5,4,4,4)  and to get the probability that one of the bins contains 3, another 5, et cetera we must multiply with the number of quintuples that has one 3, one 5, and three 4's. This leads to the following:

p=20×5−2020!3!5!4!4!4!

In a similar way we find:

q=1×5−2020!4!4!4!4!4!

So:

pq=20×4!4!4!4!4!3!5!4!4!4!=20×45=16

thus, pq = 16.

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7 0
1 year ago
Solve for x {x+4]= 6
wlad13 [49]

The solution to the equation x(x+4) = 6 is x = -2 + √10 or x = -2 - √10 after solving with the quadratic formula.

<h3>What is a quadratic equation?</h3>

Any equation of the form \rm ax^2+bx+c=0 where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}

We have an equation:

x(x + 4) = 6

By distributive property:

x² + 4x = 6

x² + 4x - 6 = 0

a = 1, b = 4, c = -6

Plugging all the values in the formula:

\rm x = \dfrac{-4 \pm\sqrt{4^2-4(1)(-6)}}{2(1)}

After calculating:

\rm x = \dfrac{-4 \pm\sqrt{40}}{2}

\rm x=-2+\sqrt{10},\ \ \ or \ \ \ x=-2-\sqrt{10}

Thus, the solution to the equation x(x+4) = 6 is x = -2 + √10 or x = -2 - √10 after solving with the quadratic formula.

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brainly.com/question/2263981

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6 0
2 years ago
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A circle is divided into 8 equal parts. What is the total<br>angle measure of 4 parts?<br>​
snow_lady [41]

Answer:

Step-by-step explanation:

A circle is divided into 8 equal parts means : 360°/8 = 45°

the total  angle measure of 4 parts is :

45°×4=180°

4 0
3 years ago
A 1.5m wire carries a 7 A current when a potential difference of 54 V is applied. What is the resistance of the wire?
borishaifa [10]

Answer:

R = 7.71 ohms

Step-by-step explanation:

By ohm's law: R= V/I

where,  R = resistance of wire, V = potential difference, I = electric current

Given: V = 54 and I = 7 A

Plug in the above values in the ohm's law, we get

R = 54 V/7 A

R = 7.71 ohms

Hope this will helpful.

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You will catch up in 15 minutes
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