please help me its simple i just can figure it out

Answer:

B = -13

Step-by-step explanation:

Add 13 to both sides

- 13 = b

Answer:

The decision rule is  

Reject the null hypothesis  

The conclusion is  

There is sufficient evidence to reject the claim  

Step-by-step explanation:

From the question we are told that

   The population mean is  [tex]\mu = 24.2 \ gallons \ per \ year[/tex]

    The sample size is  n  =  101

     The sample mean is  [tex]\= x = 23.5 \ gallons\ per\ year[/tex]

     The standard deviation is  [tex]\sigma = 3.2 \ gallons[/tex]

The null hypothesis is  [tex]H_o : \mu = 24.2[/tex]

 The alternative hypothesis is [tex]H_a : \mu \ne 24.2[/tex]

Generally the test statistics is mathematically represented as    

               [tex]z = \frac{ \= x - \mu }{ \frac{\sigma }{ \sqrt{n} } }[/tex]

=>             [tex]z = \frac{ 23.5 - 24.2 }{ \frac{ 3.2}{ \sqrt{ 101} } }[/tex]  

=>             [tex]z = -2.198[/tex]

From the z table  the area under the normal curve to the left corresponding to    -2.198  is  

         [tex]P(Z < -2.198 ) = 0.013975[/tex]

Gnerally the  p-value is mathematically represented as

         [tex]p-value = 0.013975 * 2[/tex]

=>      [tex]p-value = 0.02795[/tex]

From the value obtained we have that  [tex]p-value \ < \ \alpha[/tex] hence  

The decision rule is  

Reject the null hypothesis  

The conclusion is  

There is sufficient evidence to reject the claim  

Using the Rejection Regions for a z-test method

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

     [tex]z_{critical} = \pm 1.96[/tex]

Not we are using  [tex]\frac{\alpha }{2}[/tex]  because it is a two - tailed test

   Now comparing the critical value and the test statistics we see that the

region covered by  the test statistics (i.e [tex]2.198 < z < -2.198[/tex])   is greater than the region covered by  the critical value  (i.e [tex]1.96 < z < -1.96[/tex])

Hence

The decision rule is  

Reject the null hypothesis  

The conclusion is  

There is sufficient evidence to reject the claim  

Answer:

8.333333..... on and on

Step-by-step explanation:

Answer:

15 or 3

Step-by-step explanation:

multiply 12 by .25 and you will get 3. that is 25% of 12. add 3 you will get 15.

I didn't know if you wanted to know how much it increased or final answer.

Answer:

We conclude that we conclude that the rate of change of a linear function g from x=-3 to x=-1 is the same as it is from x=-1 to x=1.

Thus, the function is linear.

Step-by-step explanation:

We know that the rate of change remains constant for a linear function.

Comparing with the slope-intercept form

The slope-intercept form of a linear function is

[tex]y = mx+b[/tex]

where m is the slope or rate of change

For example, considering the linear function

[tex]y = 6x + 4[/tex]

Then the average rate of change is 6 over any interval selected.

Therefore, we conclude that we conclude that the rate of change of a linear function g from x=-3 to x=-1 is the same as it is from x=-1 to x=1.

Thus, the function is linear.

Answer:

WN=37.8

Step-by-step explanation:

WN=18%*210

WN=0.18*210

WN=37.8

Answer:

700

Step-by-step explanation:

Answer:

the answer is b

Step-by-step explanation:

because it 719,283 so you have to look at the 71 for this equation and sense the 1 is in higher then 5 it stays the same

hope that helps :)

Answer:

24 ounce one

Step-by-step explanation:

You divide 3.9 by 24 round it to 6 times .52 to 6 it is 3.12

2.63<3.12

Step-by-step explanation:

x will equal 6

hope this helps bro if u need the explanation I'll explain to u if needed

6x + 2 - 2x = 3x + 14 - x

6x - 2x + 2 = 3x - x + 14

4x + 2 = 2x + 14

4x - 2x = 14 - 2

2x = 12

x = 12/2

x = 6

Answer:

30 students

Step-by-step explanation:

40% boys and 12 boys so 60% is girls

40/100=12/x

x=30

30-12 is 18

so 30 students, 12 boys, and 18 girls.

Answer:

x w1ll b3  with the 4x+19

Step-by-step explanation:

Answer:

.02

Step-by-step explanation:

can't really show work since you don't solve

Answer:

2% as a decimal would be 0.02

Step-by-step explanation:

Where I learned, we do DR. Pepper. We use the DR. 2% is in the ones place. The decimal point goes from the right of R to the left of D. 2% would then be 0.02.

Answer:

8 feet

Step-by-step explanation:

The diagram is attached below.

Note that the values are different but the diagram is similar. In this case,

Hypotenuse =17ft

Adjacent = 15²

Required

Opposite side

To get the feet of landscape edging would be required to outline the edge of the bed, we will use the Pythagoras theorem as shown;

Hyp² = Opp²+Adj²

Opp² = Hyp²-Adj²

l² = 17²-15²

l² = 289-225

l² = 64

l = √64

l = 8feet

Hence the feet of landscape edging would be required to outline the edge of the bed is 8 feet

Answer:

first write the equation in point-slope form

y - 4 = -2 (x - (-3)) (then, solve the equation to get your answer)

y -4 = -2 (x +3) (use the distributive property)

y - 4 = -2x -6  (add 6 to both sides)

y +2 =-2x (add 2x to both sides)

2x +y +2= 0 (this is your answer)

Answer:

0.5

Step-by-step explanation:

Answer:

0.5

Step-by-step explanation:

Answer:

D. 15 cm, 9 cm, 24 cm

Step-by-step explanation:

The three lengths that could be the lengths of the sides of a triangle, must satisfy the following condition;

---sum of any two smaller sides chosen must be equal to the third side.

Test option A : 6 cm + 11 cm = 17 cm  ( 17 cm ≠ 23 cm)

Test option B: 10 cm + 15 cm = 25 cm (25 cm ≠ 24 cm)

Test option C: 6 cm + 6 cm = 12 cm (12 cm ≠ 22 cm)

Test option D: 15 cm + 9 cm = 24 cm (24 cm = 24 cm) ---correct option.

Thus, the three lengths that could be the lengths of the sides of a triangle are 15 cm, 9 cm, and 24 cm

Answer:

C. φ

Step-by-step explanation:

[tex]tan \phi \: = \frac{6}{5} \\ \\ tan x \: = \frac{6}{5} \\ \implies \: x = \phi[/tex]

Thus [tex] \Phi [/tex] can replace x

Answer:125cm

Step-by-step explanation:

Answer:

54

Step-by-step explanation:

Answer:

Two hours

Step-by-step explanation:

1/4 = 1/2

2/4 = 1

3/4 = 1 1/2

4/4 = 2

Answer:

Step-by-step explanation:

(6e-3f-3/4) contains two terms which do not involve fractions and one fractional term (3/4).

We can safely remove the parentheses.  Then:

(6e-3f-3/4)  =>  6e - 3f - 3/4

That is "an equivalent expression."

We could go further and create one equivalent fraction.  Multiply the first two terms by 4/4, obtaining:

24e    12f       3           24e - 12f - 3             3(8e - 4f - 1

------ - ------ - -----  =>  ----------------------  =>  -------------------

  4       4         4                     4                             4

Other equivalent expressions exist here.

Answer:

the Profit earned by the company is $280,489

Step-by-step explanation:

Total Cost of 5 projects awarded = $7,435,000

Cost of Project​ 1 = $1,245,000

Cost of Project​ 2 = $985,689

Cost of  Project​ 3 = $1,723,000

Cost of Project​ 4 = $2,567,054

Cost of Project​ 5 = $633,768

We need to find the profit earned by the company.

First we need to find Total cost spent on all 5 projects.

It can be found by adding cost spent on all projects.

Total cost spent on all 5 projects = Cost of Project 1 + Cost of Project 2 + Cost of Project 3 + Cost of Project 4 + Cost of Project 5

Total cost spent on all 5 projects = $1,245,000+ $985,689 + $1,723,000+ $2,567,054 + $633,768

Total cost spent on all 5 projects = $7,154,511

Now we can calculate profit earned using formula:

Profit earned = Total Cost of 5 projects awarded - Total cost spent on all 5 projects

Profit earned = $7,435,000 - $7,154,511

Profit earned = $1,280,489

So, the Profit earned by the company is $280,489

Answer:

c

Step-by-step explanation:

Answer:

Fraction = [tex]\frac{19}{50}[/tex]

Decimal = 0.38

Percent = 38%

Step-by-step explanation:

Number of shaded rectangles = 38

Total number of rectangles = 100

Fraction represented by the shaded area = [tex]\frac{\text{Number of blocks shaded}}{\text{Total number of blocks}}[/tex]

                                                                     = [tex]\frac{38}{100}[/tex]

                                                                     = [tex]\frac{19\times 2}{50\times 2}[/tex]

                                                                     = [tex]\frac{19}{50}[/tex]

Decimal form of the shaded area = [tex]\frac{38}{100}[/tex] =  0.38

Percent of the shaded area = [tex]\frac{38}{100}[/tex] = 38%

Answer:

Fraction =

Decimal = 0.38

Percent = 38%

Step-by-step explanation:

Number of shaded rectangles = 38

Total number of rectangles = 100

Fraction represented by the shaded area =

                                                                    =

                                                                    =

                                                                    =

The decimal form of the shaded area =  =  0.38

Percent of the shaded area =  = 38%

The time taken by sister of Eva to knit 8 similar scarves, if Eva can knit 2/5 of a scarf in an hour. Her sister takes 3/4 of the time she takes is 2.4 hours.

It is the contrast of two different quantities. For instance, if your father weighs 90 kg, and you weigh 30 kg, the weight ratio is 1:3.

Given:

Eva can knit 2/5 of a scarf in an hour. Her sister takes 3/4 of the time she takes,

Calculate the time taken by the sister of Eva as shown below,

The time taken by the sister to knit a scarf = 3 / 4 × 2 / 5 hours

The time taken by the sister to knit 8 scarves = 3 / 10 × 8 hours

The time taken by the sister to knit 8 scarves = 2.4 hours

To know more about Ratios:

https://brainly.com/question/13419413

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Answer:

2.5 equals 23 /9  as an improper fraction or 25 /9  as a mixed number.

Step-by-step explanation:

Answer:

2301

Step-by-step explanation:

Hope this helped