Help Please I’ll Give Brainliest :)

Answer: Mike's weekly allowance is 20 dollars

Step-by-step explanation:

Answer:

The 90% confidence interval is  [tex] 0.0097 <  p_1 -p_2 < 0.0773 [/tex]

Step-by-step explanation:

From the question we are told that

   The first  sample size is [tex]n_1 =  620[/tex]

    The number of chips that failed is  k = 125

   The second sample size is [tex]n_2  =  820[/tex]

    The number of chips that fail is  [tex]u  = 130[/tex]

Generally the confidence level is  90% , hence the level of significance is  

    [tex]\alpha =  (100 - 90)\% [/tex]

=>  [tex]\alpha = 0.10 [/tex]

Generally from the normal distribution table the critical value  of  [tex]\frac{\alpha }{2}[/tex] is  

   [tex]Z_{\frac{\alpha }{2} } =  1.645[/tex]

Generally the first sample proportion is  

       [tex]\r p _1 =  \frac{125}{620}[/tex]

=>     [tex]\r p _1 = 0.202[/tex]

Generally the second  sample proportion is  

       [tex]\r p _1 =  \frac{130}{820}[/tex]

=>     [tex]\r p _1 = 0.1585[/tex]

Generally the standard error is mathematically represented as

[tex]SE =  \sqrt{\frac{\r p_1 (1 - \r  p_1)}{n_1} +\frac{\r p_2 (1 - \r  p_2)}{n_2}  }[/tex]    

=> [tex]SE =  \sqrt{\frac{0.202(1 - 0.202)}{620} +\frac{0.1585 (1 - 0.1585)}{820}  }[/tex]  

=>  [tex]SE = 0.0206[/tex]  

Generally the margin of error is mathematically represented as  

      [tex]E = Z_{\frac{\alpha }{2} } * SE[/tex]

=>     [tex]E = 1.645 * 0.0206[/tex]

=>    [tex]E =0.0338[/tex]

Generally 95% confidence interval is mathematically represented as  

      [tex](\r p_1 -\r p_2) -E <  p_1 - p_2 <  (\r p_1 -\r p_2) +E [/tex]

=>    [tex](0.202 -0.1585) -0.0338 <  p_1 - p_2 < (0.202 -0.1585) +0.0338 [/tex]

=>    [tex] 0.0097 <  p_1 - p_2 < 0.0773 [/tex]

Answer:

26.5

Step-by-step explanation:

cut the shape into 3 shapes

area of a retangle is = L*W=  5*4 = 20

Area of a triangle =  a= h*b/2 = 3*3/2 = 4.5

Area of a triangle = a= h*b/2 = 2*2/2 =2

Answer:

468 ft²

Step-by-step explanation:

Area= (sum of the 2 parallel sides÷2)×perpendicular height

=(15+37)÷2×18

=52÷2×18

=468

Step-by-step explanation:

I think this is the answers. hope it helps you

Answer:

38.4 ft

Step-by-step explanation:

Basically, draw out your two Situations like I have did.

Then find the scale factor by doing 6/40.

Multiply the SF by 256 to get X, or the shadow of the woman.

The screenshot provided shows the drawings.

Answer:

x-intercept(s):

(

4

,

0

)

y-intercept(s):

(

0

,

−

4

)

Step-by-step explanation:

Answer:

312.5

Step-by-step explanation:

P=5000

r=12.5%=0.125

t=6month=0.5years

I=P•r•t

I=(5000)(0.125)(0.5)

I =$312.5

The price elasticity of demand for the parakeet chow is 1.33.

Price elasticity of demand is the change in product quantity demanded to change in price.

From the question:

[tex]\%\ Change\ in \ quantity=\frac{30000-40000}{30000}= -33.3\%\\\\\%\ Change\ in \ price=\frac{20-16}{16}= 25\%\\\\PED=|\frac{\%\ Change\ in \ quantity}{\%\ Change\ in \ price} |=|\frac{-33.3\%}{25\%}|=1.33[/tex]

The price elasticity of demand for the parakeet chow is 1.33.

Find out more on elasticity of demand at: https://brainly.com/question/24384825

The changes in lowe's dollars of gross profit and gross profit percentages as seen in fiscal 2019 is due to;

The gross profit margin is known to be that which informs a person what their business has made after paying their direct cost of doing business.

This is made up of labor, materials and other kinds of direct production costs. It is known to be a key element in profitability ratios along with operating profit margin and net profit margin.

The Iowe's company was said to have posted that they made about 2.6 percent in terms of sales growth and the fiscal 2019 shows that they had the highest sales and adjusted diluted earnings per share since the start of the company.

See options below

a. Sales volume increased in fiscal 2019, but unit costs decreased.

b. Sales volume decreased in fiscal 2019, and per unit selling prices decreased.

c. Sales volume increased in fiscal 2019, and unit costs increased.

d. Sales volume and unit costs did not change, but per unit selling prices increased.

Learn more about gross profit from

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Answer:

2x - 3y = 6

[tex]x = 3 + \frac{3y}{2}[/tex]

[tex]y = 2 + \frac{2x}{3}[/tex]

4y - x = 12

[tex]x = 12 + 4y\\y = 3 + \frac{x}{4}[/tex]

Step-by-step explanation:

Divide both sides of the equation to "solve for x and y."

Answer:

1.05

There you go!

Answer:14

Step-by-step explanation:

Answer:

14

Step-by-step explanation: Correct

Answer:

Abe I would estimate 20 and actual time would be 21

Lane I would estimate 15 and the actual time would be 17

Norma I would estimate 15 and actual time would be 13

Amado I would estimate 40 and actual time would be 40

Cesar I would estimate 25 and actual time would be 25

Step-by-step explanation:

Hope this helps a bit!

Answer:

b,d

Step-by-step explanation:

Given that each package contains 9 trading cards.

Packages                                      Trading cards

2                                                      18

4                                                      36

7                                                      63

Answer:

how to understand the problem is picture the shape as a house and try to figure out what to do next

Step-by-step explanation:

ANSWER

thirteen point zero eight five

Answer:

-1 and 3

Step-by-step explanation:

The roots of the quadratic function can be determined by [tex]f(x')=0[/tex] where x' is the roots of the quadratic function. In that graph, x = -1 and x = 3 makes the value of f(-1) = 0 and f(3) = 0. So, x = -1 and x = 3 are the roots of the f(x).

Answer:

y = 2x + 4

Step-by-step explanation:

the equation of a line in point- slope form is

y = mx + c ( m is the slope and c the y- intercept )

here m = 2 and passes through point (0, 4 ) ⇒ c = 4

y = 2x + 4 ← equation of line

Answer:

y = 2x + 4

Step-by-step explanation:

General form of linear equation:  y = mx + c

where m is the gradient and c is the y-intercept

Given gradient = 2  

⇒  m = 2  

⇒  y = 2x + c

y-intercept is when x = 0

Given (0, 4), so y = 4 when x = 0

⇒ c = 4

⇒ y = 2x + 4

9514 1404 393

Answer:

Step-by-step explanation:

As the attached diagram shows, a perpendicular line from B intersects a choice of C only for B1(12, 6) and B2(12, 16). We note that there are only 3 choices of point C shown, instead of 4, so the question may be incomplete.

__

It seems easiest to graph the points and use a square (right-angle tool) to identify points C that may be appropriate.

It can also work to use a spreadsheet to do the slope calculations. You want to find a point C such that BC ⊥ AB, for a given AB pair. That is, the slope of BC is the negative reciprocal of the slope of AB.

The 2nd and 3rd C points listed make right angles with the 1st and 2nd AB pairs listed, respectively.

Given :

⠀

To Find :

⠀

Solution :

We know that,

[tex]\qquad{ \bold{ \pmb{2(Length + Breadth ) = Perimeter_{(rectangle)}}}}[/tex]

Let's assume the width of the rectangle as x inches. Then the length will become (3x + 9).

⠀

Now, Substituting the given values in the formula :

[tex]\qquad \dashrightarrow{ \sf{2(3x + 9 + x )= 138}}[/tex]

[tex]\qquad \dashrightarrow{ \sf{2(4x + 9 )= 138}}[/tex]

[tex]\qquad \dashrightarrow{ \sf{8x + 18= 138}}[/tex]

[tex]\qquad \dashrightarrow{ \sf{8x = 138 - 18}}[/tex]

[tex]\qquad \dashrightarrow{ \sf{8x = 120}}[/tex]

[tex]\qquad \dashrightarrow{ \sf{x = \dfrac{120}{8} }}[/tex]

[tex]\qquad \dashrightarrow{ \bf \: x = 15}[/tex]

⠀

Therefore,

[tex]\qquad { \pmb{ \bf{ Width _{(frame)} = x = 15 \: inches}}}\:[/tex]

[tex]\qquad { \pmb{ \bf{ Length _{(frame)} = (3x + 9) \: = 3(15) + 9 = 54 \: inches}}}\:[/tex]

Answer:

  x = 6

Step-by-step explanation:

Using the relationships between the entries in the table, you can find x two different ways.

The numbers down the Total column add to give the one at the bottom:

  0.1 + 0.09x = 0.64

  0.09x = 0.54 . . . . . . . subtract 0.1

  x = 6 . . . . . . . . . . . . divide by 0.9

__

The product of the numbers in the first two columns is the number in the third. On the bottom row, this means ...

  (2 +x)(0.08) = 0.64

  2 +x = 8 . . . . . . . . . . . divide by 0.08

  x = 6 . . . . . . . . . . . subtract 2

Answer:

x=12 pls give brainliest

Step-by-step explanation:

Answer: x = 12, Angle 1 = 38°

Step-by-step explanation: Complimentary angles add up to 90°.

Add the two angles and set them equal to 90°:

(3x + 2) + (4x + 4) = 90

Add like terms:

7x + 6 = 90

Subtract 6 from both sides:

7x = 84

Divide both sides by 7:

x = 12

Now, to get Angle 1, plug x in:

Angle 1 = 3(12) + 2

Angle 1 = 38°

Hope this helps!

Answer:

there is no way to further simplify the equation

Step-by-step explanation:

the last one is the line expression who shows the distance from 2 to negative 5

Option D is the correct answer.

We need to identify which number line expression shows how to find the distance from 2 to -5.

A line on which numbers are marked at intervals is used to illustrate simple numerical operations.

If we see option D, it has been marked correctly at 2 and -5.

Therefore, option D is the correct answer.

To learn more about the number line visit:

https://brainly.com/question/13189025.

#SPJ5

Step-by-step explanation:

1. A+B=Just add the J hat with J hat and add the I hat with the I hat.

[tex](3i + ( - 1)i + ( - 2) + ( - 4)j = 2i - 6j[/tex]

A-B=

[tex]3 - ( - 1)i + ( - 2) - ( - 4)j = 4i + 4j[/tex]

2. Take the magnitude of A+B

[tex]2 {}^{2} + ( - 6) {}^{2} = {r}^{2} [/tex]

[tex]40 = {r}^{2} [/tex]

[tex]r = \sqrt{40} [/tex]

So the magnitude is root of 40.

So the magnitude of A+B is

The magnitude of A-B

[tex] {4}^{2} + {4}^{2} = 4 \sqrt{2} [/tex]

So the magnitude is

[tex]4 \sqrt{2} [/tex]

c. To find direction, we need to find the angle.

Use this rule,

[tex] \tan(x) = \frac{bj}{bi} [/tex]

For A+B, we get

[tex] \tan(x )= \frac{ - 6}{2} [/tex]

[tex] \tan(x) = - 3[/tex]

Since this is a southeast, the degree is 288.43.

The direction is southeast, 288.43 degrees

For A-B, we get

[tex] \tan(x) = \frac{4}{4} [/tex]

[tex] \tan(x) = 1[/tex]

Since this is northeast, the degree is 45 degrees.

The direction is northeast, 45 degrees.

Answer:

i domisa

Step-by-step explanation:

Answer:

13 hours

Step-by-step explanation:

Since Kiara has already written 37 pages she only needs 13 more to get to 50 pages. If she takes one hour per page then it will take her 13 hours to write 13 pages.

Divide the number of defective by the total number of batteries then multiply by 100 to get the percent.

18/150 = 0.12

0.12 x 100 = 12%

Answer: 12%