help me with this plissssss​

Answer:

add x

Step-by-step explanation:

get the constants on one side, and the variables on the other for easiest solving.

Answer:

Group A (distance in miles) 1, 1.5, 3.03, 3.2, 2.8, 1.5, 1.8, 2.5, 2.2) Group B (distance in miles) 2, 2.5, 3.23, 1.3, 1.8, 2.4, 3, 1.5, 1.8)Therefore, the correct answer is A) It is equal for Group A and Group B.

Answer:

the area is 30 you have to muiltly the two together

Step-by-step explanation:

Answer:

3 units.

Step-by-step explanation:

We can calculate the length, since it only moves on the "x" axis, since on the "y" axis, it remains the same.

We know that between -2 to 5, there are 7 units. 2 + 5 = 7.

Therefore this would be the length.

We know that the perimeter is equal to:

p = 2 * w + 2 * l

P = 20

20 = 2 * w + 2 * 7

2 * w = 20 - 14

w = 6/2

w = 3

therefore, the width value is 3 units.

Answer:

3

Step-by-step explanation:

Answer:

[tex]9\sqrt{15}*cis(\dfrac{19\pi}{24})[/tex]

Step-by-step explanation:

To multiplying complex numbers in polar form, follow these steps:

Given the two complex number in polar form

[tex]3\sqrt{3}\:cis(\dfrac{\pi}{8})\:\:and\:\:3\sqrt{5}\:cis(\dfrac{2\pi}{3})\\\\3\sqrt{3}\:cis(\dfrac{\pi}{8})*3\sqrt{5}\:cis(\dfrac{2\pi}{3})=(3\sqrt{3}*3\sqrt{5})*cis(\dfrac{\pi}{8}+\dfrac{2\pi}{3})[/tex]

[tex]=9\sqrt{15}*cis(\dfrac{3\pi+8*2\pi}{24})\\\\=9\sqrt{15}*cis(\dfrac{19\pi}{24})[/tex]

Answer: 34.86cis (2.49)

Step-by-step explanation: I took the quiz.

Answer:

The second one.

Step-by-step explanation:

The others don't add up to that number

Given Information:

Cost price = $4

Selling price = $10

Salvage value = $1.50

Average demand = μ = 250 boxes

Standard deviation = σ = 34 boxes

Required Information:

Number of lettuce boxes = ?

Answer:

The supermarket should purchase 268 boxes  of lettuce

Step-by-step explanation:

The required number of lettuce boxes that supermarket should purchase is given by

Number of lettuce boxes = μ + (z*σ)

Where μ is the average demand of lettuce boxes, σ is the standard deviation, and z is the z-score which is given by

p = C_us/(C_us + C_os)

The z-score corresponding to probability p will be obtained.

The cost of under stocking is given by

C_us = Selling price - Cost price

C_us = $10 - $4

C_us = $6

The cost of over stocking is given by

C_os = Cost price - Salvage value

C_os = $4 - $1.50

C_os = $2.50

p = C_us/(C_us + C_os)

p = 6/(6 + 2.50)

p = 0.7058

p  = 70.58%

The z-score corresponding to 70.58% probability is approximately 0.54

Number of lettuce boxes = μ + (z*σ)

Number of lettuce boxes = 250 + (0.54*34)

Number of lettuce boxes = 250 + (18.36)

Number of lettuce boxes = 268.36

Number of lettuce boxes ≈ 268

Therefore, the supermarket should purchase 268 boxes of lettuce.

How to use z-table?

Step 1:

In the z-table, find the probability you are looking for and note down the two-digit number of the given row. (e.g 0.5, 2.2, 0.5 etc.)

Step 2:

Then look up at the top of z-table and note down the value in the column for the remaining decimal point in the range of 0.00 to 0.09.

Step 3:

Finally, add the numbers obtained from step 1 and step 2.

Answer:

b means one of the sides of a square it doesn't matter because all sides are the same

Formula for a square is

b^2 or b*b

Answer:

y = [tex]-3x^2+12x-12[/tex]

Step-by-step explanation:

(x-2)^2 = (x-2)(x-2) => [tex]x^2-4x+4[/tex]

now, multiple every term by negative 3 and you get...

-3x^2+12x-12

Answer:

ooga booga ooga booga ooga booga ooga booga ooga booga

Step-by-step explanation:

Answer:

Step-by-step explanation:

x^-2 = (-3)^-2 = 1/(-3)^2 = 1/9

Each of the following is the previous value multiplied by -3,

x^-1 = x(x^-2) = (-3)(1/9) = -1/3

x^0 = x(x^-1) = (-3)(-1/3) = 1

x^1 = -3(1) = -3

x^2 = -3(-3) = 9

Answer:

135

Step-by-step explanation:

volume = width*length*height

5*9*3=135

we need 135inches³ to paint it

The square root of 4 is 2. Since 3 is less than 4, the square root of 3 would be just under 2.

The first graph would be correct.

0.475

1000 milliliters is equal to 1 liter

Answer: 0.475 Liters

Step-by-step explanation: So, we know one liter is exactly 1,000 milliliters...therefore this would have to be a decimal.

Therefore, 475 milliliters to liters would be 0.475 liters.

Answer:

52+n=m

Step-by-step explanation:

Answer:

6.5 /52 m = n

Step-by-step explanation:

The rate is 6.5 miles / 52 minutes

We are going to run m miles in n minutes

m = 6.5 / 52 * n

We want to solve for n

Multiply each side by 52/ 6.5

6.5 /52 m = 6.5 / 52 * n * 6.5 / 52

6.5 /52 m = n

Answer:

(a) We conclude that there is a significant association between prenatal exposure to antidepressant medicine and the risk of autism at 5% significance level.

(b) Yes, we can conclude that prenatal exposure to antidepressant medicine increases the risk of autism in the child.

Step-by-step explanation:

We are given that Autism and Maternal Antidepressant Use A recent study 41 compared 298 children with Autism Spectrum Disorder to 1507 randomly selected control children without the disorder.

Of the children with autism, 20 of the mothers had used antidepressant drugs. Of the control children, 50 of the mothers had used the drugs.

Let [tex]p_1[/tex] = proportion of mothers who had used drugs having Autism Spectrum Disorder in their children.

[tex]p_2[/tex] = proportion of mothers who had used drugs not having Autism Spectrum Disorder in their children.

(a) Null Hypothesis, [tex]H_0[/tex] : [tex]p_1=p_2[/tex]      {means that there is no significant association between prenatal exposure to antidepressant medicine and the risk of autism}

Alternate Hypothesis, [tex]H_A[/tex] : [tex]p_1\neq p_2[/tex]     {means that there is a significant association between prenatal exposure to antidepressant medicine and the risk of autism}

The test statistics that would be used here Two-sample z test for proportions;

                         T.S. =  [tex]\frac{(\hat p_1-\hat p_2)-(p_1-p_2)}{\sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1}+\frac{\hat p_2(1-\hat p_2)}{n_2} } }[/tex]  ~ N(0,1)

where, [tex]\hat p_1[/tex] = sample proportion of mothers who had used drugs having Autism Spectrum Disorder in their children = [tex]\frac{20}{298}[/tex] = 0.067

[tex]\hat p_2[/tex] = sample proportion of mothers who had used drugs not having Autism Spectrum Disorder in their children = [tex]\frac{50}{1507}[/tex] = 0.033

[tex]n_1[/tex] = sample of children with Autism Spectrum Disorder = 298

[tex]n_2[/tex] = sample of children without Autism Spectrum Disorder = 1507

So, the test statistics  =  [tex]\frac{(0.067-0.033)-(0)}{\sqrt{\frac{0.067(1-0.067)}{298}+\frac{0.033(1-0.033)}{1507} } }[/tex]

                                       =  2.281

The value of z test statistics is 2.281.

Now, at 5% significance level the z table gives critical values of -1.96 and 1.96 for two-tailed test.

Since our test statistic doesn't lie within the range of critical values of z, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that there is a significant association between prenatal exposure to antidepressant medicine and the risk of autism.

(b) Yes, we can conclude that prenatal exposure to antidepressant medicine increases the risk of autism in the child because if we reconsider our hypothesis for one-tailed test in which the null hypothesis states that the prenatal exposure to antidepressant medicine does not increases the risk of autism in the child.

For this hypothesis also, our test statistics will be more than the critical value of z and due to which we reject our null hypothesis and conclude that prenatal exposure to antidepressant medicine increases the risk of autism.

Answer:

The aquarium contains [tex]\frac{x}{2}[/tex] cubic inches of water

Step-by-step explanation:

Given: A local aquarium is filled halfway with water.

To find: Volume of water in the aquarium

Solution:

Volume refers to the three-dimensional space enclosed by a boundary. S.I. unit of volume is [tex]m^3[/tex]

Let x cubic inches denotes volume of an aquarium.

As a local aquarium is filled halfway with water,

the aquarium contains [tex]\frac{x}{2}[/tex] cubic inches of water.

Answer:

Step-by-step explanation:

Showing results for The aquarium contains cubic inches of waterStep-by-step explanation:Given: A local aquarium is filled halfway with water.To find: Volume of water in the aquarium Solution:Volume refers to the three-dimensional space enclosed by a boundary. S.I. unit of volume is Let x cubic inches denotes volume of an aquarium.As a local aquarium is filled halfway with water,the aquarium contains cubic inches of water.

Answer:

Step-by-step explanation:

Answer:

$73.68

Step-by-step explanation:

2800 divide by 38 equals 73.68

Answer:

14

Step-by-step explanation:

all i did was divided 42 by 3 and got 14

Answer:

  126 in^2

Step-by-step explanation:

The surface area can be found from the surface area formula:

  SA = 2(LW +LH +WH)

I like to rearrange it slightly to ...

  SA = 2(LW +H(L +W))

For the given dimensions, the area is ...

  SA = 2(6·3 + 5(6 +3)) = 2(18 +45) = 126 . . . . square inches

Answer:

cost of paint set  =$19.5

cost of Sketchbook = $13

cost of brush =  $3..25

Step-by-step explanation:

Total money with Nate = $37.75

Let the cost of paint set be $x

As the  Sketchbook cost 2/3 the cost of the paint set

Thus cost of Sketchbook = $(2/3)x

Cost of brush is 1/4 of Sketchbook

Thus cost of brush = (1/4)*(2/3)x =$ 1/6x

Total cost of all the three item in terms of x  is

x + (2/3)x + ( 1/6)x

=>(6x+4x+x)/6 = 11x/6

Given that after money spent on buying all the three thing Nate has left $2

subtracting money spent on buying three things from total money is equal to $2

Mathematically it can be written as

$37.75 -  11x/6 = $2

=> $37.75  - $2  11x/6

=>$35.75 =  11x/6

=> $35.75*6 = 11 x

=> $214.5 = 11x

=> $214.5/11 = x  

=> x = 19.5

Thus,

cost of paint set  = x = $19.5

cost of Sketchbook = $(2/3)x =$(2/3)*19.5 = $13

cost of brush = $ 1/6x = $ (1/6)*19.5 = $3.25

Answer:

It is C

Step-by-step explanation:

You have to make a subject to research before your make a question, because you dont know what your looking for then.

I know i might be late but can i have brainliest if its correct so i can level up?

Thank you!

Answer:

cthe therd one

Step-by-step explanation:

you need a subject to research before you make a question,

so you can also begon with your work like assimgments.

Answer:

Correct

Step-by-step explanation:

Amount of granular of 10 batch of raisin nut = 28 cups

To find raisin nut 30 batches = 28 x 3 = 84

Amount of granula of 10 batch of honey almond energy = 42

To find honey almond 15 batches = 42 + 21 = 63

Answer:

The distance from the boathouse to the cabin = 50 yd (nearest yard)

Step-by-step explanation:

The question is incomplete.

Question:

To find the distance from the

boathouse on shore to the cabin on the island, a surveyor measures from the boathouse to point X as shown. He then finds m∠X with an instrument called a transit. Use the surveyor’s

measurements to find the distance from the boathouse to the cabin.

Find attached the diagram of the question.

Solution:

Let the distance from the boathouse to the cabin = y

the distance from the boathouse to the point X = 30yard

Find attached the diagram for the solution.

From the diagram, the triangle is a right angled triangle

Opposite = y

Adjacent = 30yd

∠X = 59°

Using trigonometry (SohCahToa)

We would apply Toa since adjacent is given and we are looking for opposite

tan θ = opposite/adjacent

tan 59° = y/30

y = 30 tan 59

y = 30(1.6643)

y = 49.929

y = 50 yd (nearest yard)

The distance from the boathouse to the cabin = 50 yd (nearest yard)

Answer:

Step-by-step explanation:

Identify:      Hypothesized π = 0.22 n =1189 X = 230  

Estimate the sample proportion, p, of defective items. p= X/n = 230/1189 = 0.1934

List the formula for the standard error of a proportion.   [tex]\sqrt{PQ/n}[/tex]

Estimate the standard error of a proportion.  [tex]\sqrt{PQ/n} = \sqrt{0.22\times 0.78/1189} = 0.0120[/tex]

State the null and alternative hypotheses below.

H0: P = 0.22

H1: P<0.22

Illustrate the acceptance and rejection regions of the diagram to the right.

check the attached image below for the diagram

Identify the critical Z , -1.645

Fornulate the decision rule and list below.

If Z calculated is less than Z critical we reject null hypothesis

Calculate your test statistic.

[tex]Z= \frac{p-P}{\sqrt{PQ/n}} = \frac{0.1934-0.22}{0.0120}= -2.217[/tex]

Do you accept or reject the null hypothesis at 0.05 level of significance? Reject

State your conclusion. Should the quality control manage accept the shipment or return it?

WE have sufficient evidence that the population proportion of "like the ads a lot" for the company's ads is less than 0.22 at a 0.05 level of significance.

If a 0.01 level of significance had been used in the test, would you have accepted or rejected the null hypothesis?  

at 0.01 level of significance the critical value of Z is -2.33

Since Z calculated is greater than Z critical value we accept the null hypothesis

Answer:

The answer is ±0.5 or ±1/2

Step-by-step explanation:

When you solve by using the quadratic formula, you get double roots that will solve the equation. Hope this helps!!

The solution of the quadratic equation is 1/2 and 1/2.

We have to find, the solution of the quadratic equation is [tex]4x^2 + 3 = 4x + 2[/tex].

To determine the solution of the quadratic equation following all the steps given below.

Equation; [tex]4x^2 + 3 = 4x + 2[/tex]

        [tex]4x^2 + 3 = 4x + 2\\\\4x^2 + 3 - 4x - 2=0\\\\4x^2 -4x +1 =0[/tex]

                    [tex]\rm 4x^2-4x +1 = 0\\\\4x^2-2x -2x + 1= 0\\\\2x(2x-1) - 1 (2x-1)=0\\\\(2x-1) ( 2x-1) = 0[/tex]

                    [tex]\rm 2x- 1= 0 , \ 2x = 1 , \ x = \dfrac{1}{2}\\\\And \ 2x- 1= 0 , \ 2x = 1 , \ x = \dfrac{1}{2}\\\\[/tex]

Hence, The required solution of the equation is 1/2 and 1/2.

For more details refer to the link given below.

https://brainly.com/question/19776811

Answer:

180

Step-by-step explanation:

12x15=180

Answer:

As E is right angle , CD is hypotenuse , and ED is perpendicular and CE is the base .

Thus sinC = Perpendicular/ Hypotenuse

sinC = ED/CD

sinC = 3/5

The sine of an angle in a right triangle is the ratio of the side opposite to

the angle to the hypotenuse side.

Reasons:

The given parameters of ΔCDE are;

∠E = 90°, DC = 5, CE = 4, ED = 3

Required: The ratio that represents the sine of ∠C

Solution:

Given that ∠E = 90° therefore;

ΔCDE is a right triangle

DC = The hypotenuse side = 5

ED = 3 = The side opposite ∠C

[tex]sin\angle C = \mathbf{\dfrac{Opposite \ leg \ length}{Hypotenuse \ length}}[/tex]

Therefore;

[tex]\underline{sin\angle C \ is \ \dfrac{3}{5}}[/tex]

Learn more about trigonometric ratios here:

https://brainly.com/question/4232719

Answer:

Step-by-step explanation:

1). y + 2x < 6

  (y + 2x) - 2x < 6 - 2x

   y < -2x + 6 [Slope intercept form of the inequality]

2). y + 2x < 6

  Since there is no sign of equal to (=) in the given inequality therefore, line graphed will be dashed.

Notation of less than (<) denotes the area down the line.

Option (4) will be the answer.

3). y + 2x < 6

    x ≤ 2

Please find the graph attached.