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4 years ago

What is x in 4x+4=5x+45

Mathematics

2 answers:

fiasKO [112]4 years ago

7 0

Answer:

Solve for

by simplifying both sides of the equation, then isolating the variable.

x = − 41

UkoKoshka [18]4 years ago

3 0

Answer:

$\boxed{\bold{x=-41}}$

Step-by-step explanation:

Subtract 4 from both sides of equation

$\bold{4x+4-4=5x+45-4}$

Simplify

$\bold{4x=5x+41}$

Subtract 5x from both sides

$\bold{4x-5x=5x+41-5x}$

Simplify

$\bold{-x=41}$

Divide both sides by -1

$\bold{\frac{-x}{-1}=\frac{41}{-1}}$

Simplify

➤ $\bold{x=-41}$

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8.The weight distribution of parcels sent in a certain manner is normal with mean value 12lb and standard deviation 3.5 lb. The

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Answer:

The value is c = 21.1445.

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 weight distribution of parcels sent in a certain manner is normal with mean value 12lb and standard deviation 3.5 lb.

This means that $\mu = 12, \sigma = 3.5$