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2 years ago

Slove: 3x + 4 - 2x - x = 4x - 5

Mathematics

2 answers:

MAXImum [283]2 years ago

8 0

Answer:

×=3

Step-by-step explanation:

you have to do 3×-2×=1x

and than the formal look like ×+4=4×-5

and move × to other side so that become 3x

and move 5 to +5 so that become 9

the formal look like 9=3×

and divide 3/9 is your answer

×=3

egoroff_w [7]2 years ago

8 0

Answer:

9/4 = x

Step-by-step explanation:

Combine the similar terms together on each side

similar terms being the same variable or just lone numbers

So:

3x + 4 -2 x - x = 4x - 5

3x -2x -x +4 = 4x -5

0x +4 = 4x -5

4 = 4x - 5

Next, make the variable term by itself on one side

4 = 4x -5

9 = 4x

9/4 = x

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Step-by-step explanation:

Step 1: Define

Identify

2(x + -5) + x = x + (-6)

Step 2: Solve for x

[Distributive Property] Distribute 2: 2x - 10 + x = x - 6
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6 0

2 years ago

Read 2 more answers

If the weight (in grams) of cereal in a box of Lucky Charms is N(489,6), what is the probability that the box will contain less

Wittaler [7]

Answer:

0.000064 = 0.0064% probability that the box will contain less than the advertised weight of 466 g.

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.

N(489,6)

This means that $\mu = 489, \sigma = 6$

What is the probability that the box will contain less than the advertised weight of 466 g?

This is the p-value of Z when X = 466. So

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

$Z = \frac{466 - 489}{6}$

$Z = -3.83$

$Z = -3.83$ has a p-value of 0.000064

0.000064 = 0.0064% probability that the box will contain less than the advertised weight of 466 g.

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