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2 years ago

Help me! I stink at math.

Mathematics

2 answers:

tatyana61 [14]2 years ago

7 0

The answer would be 1y

Lisa [10]2 years ago

4 0

Answer:

4 - qy/3

Step-by-step explanation:

1. Expand.

\frac{1}{3}\times 12+\frac{1}{3}\times -qy

 ×12+

 ×−qy

2. Simplify \frac{1}{3}\times 12

 ×12 to \frac{12}{3}

12

 .

\frac{12}{3}+\frac{1}{3}\times -qy

12

 +

 ×−qy

3. Simplify \frac{12}{3}

12

 to 44.

4+\frac{1}{3}\times -qy4+

 ×−qy

4. Move the negative sign to the left

4-\frac{qy}{3}4−

qy

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The mean annual income for adult women in one city is $28,520 and the standard deviation of the incomes is $5600. The distributi

pshichka [43]

Answer:

$E(\bar{x}) = 28520$

Standard error of mean = 689

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $28,520

Standard Deviation, σ = $5600

Mean of sampling distribution =

$E(\bar{x}) = \mu = 28520$

As per Central Limit Theorem, if the sample size is large enough, then the sampling distribution of the sample means follow approximately a normal distribution.

Sample size, n = 66

Since the sample size is large, we can use normal distribution for approximation.

Standard error of mean =

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7 0

2 years ago

Solve for t : t3 + 4 =-4

Nikolay [14]

-2.6 I think is the correct answer

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2 years ago

The expression 35+45x represents a trains distance in miles from a terminal after X hours of travel

marin [14]

Answer:

Step-by-step explanation:

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6 0

2 years ago

Solve each of the following equations.

tamaranim1 [39]

A. -13
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3 years ago

Read 2 more answers

Patrick wants to play laser tag. It costs $9.00 per game and he gets a student discount of $10. Write an equation to represent t

Nana76 [90]

Answer:

$T=9x-10$

Step-by-step explanation:

Let x be the number of games

Cost of 1 game = $9

Cost of x games = 9x

he gets a student discount of $10.

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So, An equation to represent the total cost of playing laser tag including the discount is $T=9x-10$

3 0

3 years ago