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Svetlanka [38]
3 years ago
8

12 PTS!!!!!!!!!

Mathematics
1 answer:
Ray Of Light [21]3 years ago
5 0
Hope this helps you:)

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Vivian won a $18 gift certificate to a Mexican restaurant. She must spend more than the
7nadin3 [17]

Answer:

7x+y>18

Step-by-step explanation:

7x is 7 dollars times the amount of burritos

y is 1 dollar times the amount of tacos

> because the final price has to be more than the gift card

18 the money on the gift card

7 0
3 years ago
What is the expectation for a binomial distribution with p = 0.5 and n = 8?
Natasha2012 [34]

Answer: 4

Step-by-step explanation:

Given the following :

P = probability of success = 0.5

n = number of trials = 8

The expected value of a binomial distribution with probability of success P and number of trials n is defined by:

E(n, p) = n * p

Therefore, expected value when P = 0.5 and n = 8

E(8, 0.5) = 8 × 0.5

= 4

The expected value of the binomial distribution is 4

8 0
3 years ago
Un viajero va a la ciudad cada 18 días y otro cada 24 días. Hoy han coincidido los dos ahi . ¿Dentro de cuántos días volverán a
spayn [35]
Si tengo la razon seria durante 84 dias.
8 0
3 years ago
What is a factor help help help help
Nitella [24]
Factor is the numbers that divides another number or expression without the remainder. For example, 3 and 6 are factors of 12 because 12÷ 3=4 and 12÷6=2.

6 0
1 year ago
What is the solution to sqrt 17-x=x+3? Show your work.
snow_lady [41]

Answer:

x=1

Step-by-step explanation:

Remember:

(\sqrt[n]{a})^n=a\\\\(a+b)=a^2+2ab+b^2

Given the equation \sqrt{17-x}=x+3, you need to solve for the variable "x" to find its value.

You need to square both sides of the equation:

(\sqrt{17-x})^2=(x+3)^2

17-x=(x+3)^2

Simplifying, you get:

17-x=x^2+2(x)(3)+3^2\\\\17-x=x^2+6x+9\\\\x^2+6x+9+x-17=0\\\\x^2+7x-8=0

Factor the quadratic equation. Find two numbers whose sum be 7 and whose product be -8. These are: -1 and 8:

(x-1)(x+8)=0

Then:

x_1=1\\x_2=-8

Let's check if the first solution is correct:

\sqrt{17-(1)}=(1)+3

4=4 (It checks)

Let's check if the second solution is correct:

\sqrt{17-(-8)}=(-8)+3

5\neq-5 (It does not checks)

Therefore, the solution is:

x=1

3 0
3 years ago
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