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4 years ago

One Solution 6x – 3x + 4 – 2x =

Mathematics

2 answers:

emmainna [20.7K]4 years ago

6 0

Answer:

x+4

Step-by-step explanation:

What I like to do in these types of problems is to separate the terms with a variable and those without.

So move +4 to the very end of the problem to make it look like this:

6x-3x-2x+4

Now simply subtract! After subtracting the first two terms (6x and -3x) it should look like this:

3x-2x+4

Then subtract once more (3x-2x)!

x+4

This cannot be simplified anymore so x+4 should be your final answer!

Tomtit [17]4 years ago

3 0

Answer:

x+4

Step-by-step explanation:

Lets rearrange,

6x-3x-2x+4

=3x-2x+4

=x+4

Final answr= x+4

As simple as that.

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Let the abbreviation PSLT stand for the percent of the gross family income that goes into paying state and local taxes. Suppose

gavmur [86]

Answer:

Number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

Step-by-step explanation:

We are given that one wants to estimate the mean PSLT for the population of all families in New York City with gross incomes in the range $35.000 to $40.000.

If sigma equals 2.0, we have to find that how many families should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5.

Here, we will use the concept of Margin of error as the statement "true mean PSLT within 0.5" represents the margin of error we want.

SO, Margin of error formula is given by;

Margin of error = $Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }$

where, $\alpha$ = significance level = 10%

$\sigma$ = standard deviation = 2.0

n = number of families

Now, in the z table the critical value of x at 5% ( $\frac{0.10}{2} = 0.05$ ) level of significance is 1.645.

SO, Margin of error = $Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }$

0.5 = $1.645 \times \frac{2}{\sqrt{n} }$

$\sqrt{n} =\frac{2\times 1.645 }{0.5}$

$\sqrt{n} =6.58$

n = $6.58^{2}$

= 43.3 ≈ 43

Therefore, number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

4 0

3 years ago

Michael writes down 4 different factors of 60

Marizza181 [45]

Answer:

34+(-12) =22

Step-by-step explanation:

because they said that adding numbers but they didn't said that negative Or positive. so i took those numbers

3 0

3 years ago

A grocery store has 120 bottles of spring

notka56 [123]

Question:

A grocery store has 120 bottles of spring water in stock. The store orders bottles of spring water in cases of 24. The store wants to order enough cases of spring water so it has more than 500 bottles in stock. Which inequality best models this situation?

A. 24x + 120 > 500

B. 24x - 120 > 500

C. 24x + 500 > 120

D. 24(x+120) > 500

Answer:

Option A. 24x + 120 > 500 is the inequality that best models this situation.

Step-by-step explanation:

The Number of bottles of spring water in the stock = 120

Each case of the spring water bottles contains 24 bottles

The store wants to order enough cases of spring water so that it has over 500 bottles in stock.

So there are already 120 bottles in stock .

The store will order

24x +120 > 500

where x is the number of spring water bottle cases

5 0

3 years ago

Angles of a polygon thanks

tino4ka555 [31]

Answer:

900 degrees

Step-by-step explanation:

Use the formula for interior angles

Sum = (n - 2) x 180

Sum = (7 - 2) x 180

Sum = 5 x 180

Sum = 900 degrees

If this answer is correct, please make me Brainliest!

3 0

3 years ago

Please help me :( ......

mixas84 [53]

Answer:

602

Step-by-step explanation:

3 0

3 years ago