Sammy saw a fish swimming at a constant rate toward the ocean floor. From a starting position of 7 meters below sea level, the fish is descending 3 meters per second. Sammy said the equation y= -7x - 3 can be used to represent the situation. Explain why Sammy is incorrect and how he could fix it.

Answer:

Test statistic Z= 1.713

The calculated Z- value =  1.7130 < 2.576 at 0.01 level of significance

Null hypothesis is accepted

There is no difference between the  mean annual salary of all lawyers in a city is  different from $110,000

Step-by-step explanation:

Step(i):-

A researcher wants to test if the mean annual salary of all lawyers in a city is

different from $110,000

Mean of the Population  μ = $110,000

Sample size 'n' = 53

Mean of the sample x⁻ = $114,000.

standard deviation of the Population = $17,000,

Level of significance = 0.01

Null hypothesis :

There is no difference between the  mean annual salary of all lawyers in a city is  different from $110,000

H₀:  x⁻ =  μ

Alternative Hypothesis :  x⁻ ≠  μ

Step(ii):-

Test statistic

                 [tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]

                 [tex]Z = \frac{114000-110000}{\frac{17000}{\sqrt{53} } }[/tex]

                Z =  1.7130

Tabulated value Z = 2.576 at 0.01 level of significance

The calculated Z- value =  1.7130 < 2.576 at 0.01 level of significance

Null hypothesis is accepted

There is no difference between the  mean annual salary of all lawyers in a city is  different from $110,000

Answer: the answer is a

Step-by-step explanation: learned about it in 9th grade

Answer:

it's a. the function has a relative maximum at (-2,4) and a relative minimum at (2,-4).

Answer:

12.5 x 24=300

Step-by-step explanation:

Answer:

6×1+9×1/10+4×1/100+7×1/1000

Step-by-step explanation:

Answer: I'm not sure what you are asking?

Answer:

4 minutes               60 calories

60 minutes              ?

Using cross-multiplication, you can find the solution.

4x = 3600

x = 900

Yes its true, you can burn 900 calories in 4 minutes

Answer:

The purpose of advertising is to inform the consumers about their product and convince customers that a company's services or products are the best, enhance the image of the company, point out and create a need for products or services, demonstrate new uses for established products, announce new products and programs.

Answer:

50% of 120 is 60

Step-by-step explanation:

So 60 is half of 120, and 60 times 2 is 50 :)

(Brainliest?)

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Let x as that number ,

So :

[tex] \frac{50}{100} x = 60 \\ [/tex]

[tex] \frac{1}{2} x = 60 \\ [/tex]

Multiply sides by 2

[tex]2 \times \frac{1}{2} x = 2 \times 60 \\ [/tex]

[tex]x = 120[/tex]

Thus that number is 120 .

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Given:

10 workers produce 30 complex elements in 10 days.

To find:

The number of days, in which 5  workers produce 24 elements.

Solution:

According to the question, let as assume

[tex]n_1=10[/tex]

[tex]w_1=30[/tex]

[tex]d_1=10[/tex]

[tex]n_2=x[/tex]

[tex]w_2=24[/tex]

[tex]d_2=5[/tex]

where, n is number of workers, w is work done, and d is number of days.

We have, a formula,

[tex]\dfrac{n_1\times d_1}{w_1}=\dfrac{n_2\times d_2}{w_1}[/tex]

Substituting the values in the above formula, we get

[tex]\dfrac{10\times 10}{30}=\dfrac{x\times 5}{24}[/tex]

[tex]\dfrac{10}{3}=\dfrac{5x}{24}[/tex]

Isolate variable x.

[tex]\dfrac{10}{3}\times \dfrac{24}{5}=\dfrac{5x}{24}\times \dfrac{24}{5}[/tex]

[tex]\dfrac{240}{15}=x[/tex]

[tex]16=x[/tex]

Therefore, the required number of days is 16.

Answer:

x=5

Step-by-step explanation:

I was working on this problem also.

Maybe my version will help, too.

You need to sketch f given the information you have.

f'(x) is approximately a a cubic polynomial which means f will look like a quartic (think W)

f slopes down (negative slope) to x=2 and then slopes down again...this is a horizontal tangent.

f then slopes down to to x=5 where is has a minimum and then slopes up.

if im not wrong

Answer:

Step-by-step explanation:

7.5

Answer:

if you divide [tex]\frac{2}{3}[/tex] by 5 the answer would be [tex]\frac{2}{15}[/tex]

I believe its a reflection

Sorry if im wrong

Answer:

[tex]m=\frac{11}{6}[/tex]

General Formulas and Concepts:

Pre-Alg

Alg I

Step-by-step explanation:

Step 1: Define

Point (-2, 7)

Point (4, 18)

Step 2: Solve for slope m

Answer:

dkdkfdodffffdsddddddddd

Answer:

a

The 95% confidence interval is   [tex]0.5753<  p <0.62474[/tex]  

b

 This 95% confidence interval tell us that there 95% confidence that the true proportion of adults in the US that now believe life imprisonment is a better approach for punishing murder lies within the interval

c

 The margin of error is   [tex]E =    0.02474 [/tex]  

d

 The confidence interval becomes wider

Step-by-step explanation:

From the question we are told that

   The sample size is  n = 1506

    The sample proportion is  [tex]\^ p = 0.60[/tex]

From the question we are told the confidence level is  95% , hence the level of significance is    

      [tex]\alpha = (100 - 95 ) \%[/tex]

=>   [tex]\alpha = 0.05[/tex]

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

   [tex]Z_{\frac{\alpha }{2} } =  1.96[/tex]

Generally the margin of error is mathematically represented as  

     [tex]E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} } [/tex]

=>   [tex]E =    1.96 * \sqrt{\frac{0.60 (1- 0.60)}{1506} } [/tex]    

=>   [tex]E =    0.02474 [/tex]  

Generally 95% confidence interval is mathematically represented as  

      [tex]\^ p -E <  p <  \^ p +E[/tex]

=>   [tex]0.60 - 0.02474 <  p <0.60 + 0.02474[/tex]  

=>   [tex]0.5753<  p <0.62474[/tex]  

This 95% confidence interval tell us that there 95% confidence that the true proportion of adults in the US that now believe life imprisonment is a better approach for punishing murder lies within the interval

Generally the level of confidence varies directly with the critical value of [tex]\frac{\alpha }{2}[/tex] and this in turn varies directly with the margin of error which when sample proportion is constant it determines the width of the confidence interval so when the level of confidence increases the confidence interval becomes wider  

Answer:

23 units on the x axis

Step-by-step explanation:

Answer:

66.5%

Step-by-step explanation:

107/160.9 = 0.665001 = 66.5%

Answer:

18 would be the number

Step-by-step explanation:

plz mark B R A I N L I E S T

Answer:

I think the answer is 18

Step-by-step explanation:

20-10%=18

Answer:

[21.9, 22.9] in thousands of dollars

Step-by-step explanation:

The formula for Confidence Interval

= Mean ± z score × standard deviation/√n

Mean = $22.4

Standard deviation = $9.3

n = 2128

z score of 98% confidence interval = 2.326

Confidence Interval = 22.4 ± 2.326 × 9.3/√2128

= 22.4 ± 0.469

Confidence Interval =

22.4 - 0.469

= 21.931

≈ 21.9 in thousand of dollars

22.4 + 0.469

= 22.869

≈ 22.9 in thousands of dollars

Hence, the 98% confidence interval =

[21.9, 22.9] in thousands of dollars

Answer:

x = 30°

Step-by-step explanation:

2x + 90 + x = 180

3x = 90

x = 30

Topic: Angles

If you would like to venture further, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

Answer:

[tex] \huge{ \boxed{ \bold{ \tt{x = 30 \degree}}}}[/tex]

♨ Step - by - step explanation

☯ Given angles :

☯ To find :

✎ Set up an equation and solve for x :

Add the like terms. Remember that Only coefficients of like terms can be added or subtracted.

➺ [tex] \sf{3x \degree + 90 \degree = 180 \degree}[/tex]

Move 90° to right hand side and change it's sign

➺ [tex] \sf{3x \degree = 180 \degree - 90 \degree}[/tex]

Subtract 90° from 180°

➺ [tex] \sf{3x \degree = 90 \degree}[/tex]

Divide both sides by 3

➺ [tex] \sf{ \frac{3x \degree}{3} = \frac{90 \degree }{3} }[/tex]

➺ [tex] \boxed{ \sf{x = 30 \degree}}[/tex]

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❑ Rules for solving an equation

Hope I helped!

Have a wonderful time ! ツ

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Answer:

M = 4/3 - c/3

Step-by-step explanation:

Answer:

4/3

Step-by-step explanation:

The slope formula is the difference in y over the difference in x, so 4-0/3-0.

Answer:

513 people per square mile

Step-by-step explanation:

because

Answer:

600

Step-by-step explanation:

24 by 3 times 100

The number of milligrams of fat that one serving has is 8000 milligrams.

Firstly, it should be noted that

1000mg = 1 gram.

Since three servings of ice cream has 24g of fat, therefore, the fa that will be contained in each will be:

= 24/3

= 8g

Therefore, we'll convert 8 grams to milligrams and this will be:

= 8 × 1000

= 8000 milligrams.

Therefore, a serving has 8000 milligrams.

Read related link on:

https://brainly.com/question/17662451

Answer:

x-29/2

Step-by-step explanation:

Answer:

B [2,∞)

Step-by-step explanation:

Answer:

y = [tex]-\frac{6}{7}[/tex] x - 9  

Step-by-step explanation:

Parallel lines have the same slopes and different y-intercept

m = [tex]-\frac{6}{7}[/tex]

y - (- 3) = [tex]-\frac{6}{7}[/tex] [x - (- 7)]

y + 3 = [tex]-\frac{6}{7}[/tex] (x + 7)

y + 3 = [tex]-\frac{6}{7}[/tex] x - 6

y = [tex]-\frac{6}{7}[/tex] x - 9

Answer:

Point of intersection of WY and ZX is (3.5, 3.5).

Step-by-step explanation:

Since, diagonals of a parallelogram bisect each other,

Point of intersection of the diagonals will be midpoint of each diagonal.

By this property, midpoint (x, y) of the segment joining W(-2, 6) and Y(9, 1) will be,

[tex]x=\frac{x_1+x_2}{2}[/tex]

x = [tex]\frac{-2+9}{2}[/tex] = 3.5

Similarly, y-coordinate of the midpoint will be,

y = [tex]\frac{y_1+y_2}{2}[/tex]

y = [tex]\frac{6+1}{2}[/tex] = 3.5

Therefore, point of intersection of the diagonals of the given parallelogram will be (3.5, 3.5).

Answer:

Attached below is the detailed solution

answer : x(t), y(t), z(t) = ( 6 + t/6,  In (36) + t/18, 1 + t )

Step-by-step explanation:

x = [tex]\sqrt{t^2 + 35 }[/tex]  , y = In(t^2 + 35 ),  Z = t;(6, ln(36), 1)

Determine the parametric equations for the tangent line to the curve with the above given parametric equations

attached below is the detailed solution

Answer:

1.109

2.264

3.462

Step-by-step explanation: