3(6+zw) = 6(w t3) How many solutions

Can some one help me with this question: Solve 5x-22=20

Annette [7]

Answer: x = 8.4

Work: So, the goal of this equation is to get x by itself, and the first thing we need to do is get 22 out of that current side. To do that, we are going to add 22 on both sides, cancelling it on the side it's currently on. So, the new equation is 5x = 42. Now, we need to divide 5 on both sides, and like I said, I'll cancel on the side it's currently on. So, the answer is x = 8.4

I hope this helps, and Happy Holidays! :)

7 0

3 years ago

Read 2 more answers

The masses to the nearest 0.5 kg of two parcels are 1.5 kg and 2.5 kg .calculate the lower and upper bounds of their combined ma

Yanka [14]

Answer:

(3.5, 4.5)

Step-by-step explanation:

The masses have a total margin of 0.5 kg, or ±0.25 kg.

The mass of the first parcel is 1.5 kg ± 0.25 kg.

The mass of the second parcel is 2.5 kg ± 0.25 kg.

The combined mass is:

(1.5 kg + 2.5 kg) ± (0.25 kg + 0.25 kg)

4 kg ± 0.5 kg

So the lower bound is 3.5 kg and the upper bound is 4.5 kg.

6 0

3 years ago

As an elearning project manager you need to plan the development of an 8 module course each module takes 11 hours to update how

andreyandreev [35.5K]

Answer:

number 6

Step-by-step explanation:

6 0

3 years ago

¿En cuál de los siguientes intervalos están solo los números reales que pertenecen a ] –3 , 5 ] y no pertenecen a [ –1 , 7 [?

vitfil [10]

Complete question:

¿En cuál de los siguientes intervalos están solo los números reales que pertenecen a ]- 3,5 ] y no pertenecen a [ –1 , 7 [ ?

A) ]-3, -1[

B) ]- 3, -1 ]

C) [-1,5]

D) ]- 3,7[

E) [5,7[

Answer:

A) ]-3, -1[

Step-by-step explanation:

El intervalo ]- 3,5 ] incluye a todos los números que se encuentran entre -3 y 5. Es decir,

...-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6...

El intervalo [–1 , 7[ excluye a los números que se encuentran entre -1 y 7, pero incluye a todos los números que sean menores a -1 y a todos los mayores a 7. Es decir,

...-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13...

Para responder el problema, debemos encontrar aquellos números reales que se incluyan dentro de ambos intervalos. Esto es,

]- 3,5 ] ...-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10...

]- ∞ , -1[ ∪ [7,∞[...-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10...

Es decir que el intervalo ]-3, -1[, corresponde a la intersección entre ambos conjuntos.

8 0

3 years ago

A test for syphilis gives a positive result with probability 0.98 when tested on a person whohas the disease. The test gives a n

Elina [12.6K]

Answer:

a) P₁ = 0,0294

b) P₂ = 0,097

c) P₃ = 0,1264

P₃ is the total probability of the individual having a positive test result

d) P₄ = 0,232

Step-by-step explanation:

a) Probability that an individual has the disease and has a positive result is P₁ :

P₁ = The probability of having the disease * Probability of + in the test result

P₁ = 0,03 * 0,98

P₁ = 0,0294

b) the probability that an individual does not have the disease and has a positive test result P₂ is:

P₂ = 0,97 * 0,1

P₂ = 0,097

c) P₃ the sum of the two previous probabilities is:

P₃ = 0,0294 + 0,097

P₃ = 0,1264

P₃ is the total probability of the individual having a positive test result

d) Applying the Bayes theorem we can get the probability that an individual with a positive test result has the disease. (P₄ )

Bayes theorem establishes:

P [ A/B ] = P[B/A] * P(A) / P(B)

In this case

P[ with disease/ given (+)tr]

= P [(+)Test/ with disease]* P (with disease)/ P of test +

P₄ = 0,98 * 0,03 / 0,1264

P₄ = 0,232

8 0

3 years ago