Which is correct simplified version of the expression shown below after combining like terms? 12 + 3.4x - 5.4x - x

Mathematics

2 answers:

Travka [436]2 years ago

5 0

Answer:

12 + 3.4x - 5.4x - x

12+3.4x-6.4x

12-3x

this is the answer of your question

Step-by-step explanation:

geniusboy [140]2 years ago

4 0

Answer:

Step-by-step explanation:

Tip: Try using words that might appear on the page you’re looking for. For example, "cake recipes" instead of "how to make a cake."

12+3.4x-5.4x=x

We move all terms to the left:

12+3.4x-5.4x-(x)=0

We add all the numbers together, and all the variables

-3x+12=0

We move all terms containing x to the left, all other terms to the right

-3x=-12

x=-12/-3

x=+4

You might be interested in

10p^(2)- 5pq - 180q^(2)

ololo11 [35]

Add and subtract the second term to the expression and factor by grouping.
5
(
p
+
4
q
)
(
2
p
−
9
q
)

4 0

3 years ago

The life of light bulbs is distributed normally. The standard deviation of the lifetime is 15 hours and the mean lifetime of a b

Anastaziya [24]

Answer:

0.8413 = 84.13% probability of a bulb lasting for at most 605 hours.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The standard deviation of the lifetime is 15 hours and the mean lifetime of a bulb is 590 hours.

This means that $\sigma = 15, \mu = 590$