An investigator predicts that dog owners in the city spend more time walking their dogs than do dog owners in the country. The investigator gets a sample of 23 city owners and 21 country owners. Do dog owners in the city spend more time walking their dogs than do dog owners in the country?

Answer:

25x-24

Step-by-step explanation:

Simplify:

21x-14+4x-10

25x-24

The speed of an athlete or a car or bicycle is given by the time it takes the athlete or car to complete a unit distance.

Reasons:

The time it takes athlete J to run 2/3 miles = 8 minutes

The time it takes athlete H to run [tex]2\frac{3}{4}[/tex] miles = [tex]\frac{1}{2}[/tex] hour

Required:

The time it would take athlete J to run one mile

Solution:

[tex]\displaystyle \frac{2}{3} \ mile \ takes \ runner \ J \ 8 \ minutes[/tex]

Therefore;

[tex]\displaystyle \frac{\frac{2}{3} \ mile}{\frac{2}{3} } \ takes \ runner \ J \ \frac{8 \ minutes}{\frac{2}{3} }[/tex]

[tex]\displaystyle \frac{\left(\frac{2}{3} \ mile \right)}{\left(\frac{2}{3} \right) } = 1 \ mile \ takes \ \frac{8 \ minutes}{\frac{2}{3} } = 8 \ minutes \times \frac{3}{2} = 12 \ minutes[/tex]

1 mile takes 12 minutes

It would take runner J 12 minutes to run 1 mile.

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Answer:

f(x) = cos(x)

Step-by-step explanation:

In a cos wave, y value is -1 when x value is pi

Answer:

8 ounces has = 2661.81685milligrams vitamin C in apple juice = 2.66181685 grams and 8 ounces has = 3549.60145milligrams vitamin C in orange juice =3.54960145 grams

Step-by-step explanation:                                                                    28.3495231 g = 1 ounce   28349.5231 mg  = 1 ounce   Therefore simultaneous equations can be done once converted  What we will see is it is easier if back to ounces once you learn how to do scientific notation scientific notation convert as 1 ounce =  0.00632462mg = (6.32462 *10^-3) So if you are not confident with scientific notation you can instead convert an ounce of juice to mg and multiply by 1/8 = 28349.5231  * 1/8 = 3543.69039 a    and   3543.69039 o to start a simultaneous equation  3543.69039 a  + 3543.69039 o = 179.3  and  4/8 = 4 *  3543.69039  = 14174.7616o (  + 3543.69039 * 3  (of 3/8) ) =10631.0712a    =  14174.7616o + 10631.0712a = 632.1   to cancel out 10631.0712a we have to make a = a  or o=o  Therefore 3543.69039 = o  3543.69039 * 4 will make all equal for equation 1    = 14174.7616a +14174.7616o = 179.3 *4 = 717.2  then subtract equation 2 as it is lower now  14174.7616a +14174.7616o = 179.3 *4 = 717.2  -   14174.7616a + 10631.0712o = 632.1    cancels out ( a) now to show 14174.7616o = 717.2  - 10631.0712o = 632.1  = 14174.7616 - 10631.0712=  (3543.6904o  = (717.2 -632.1) )  =  3543.6904o = 85.1 o = 3543.6904/85.1  o = 41.6414853milligrams   and a = input for o   showing original equation    14174.7616 (41.6414853) + 10631.0712a = 632.1  = 590258.127 + 10631.0712a  = 632.1  = 10631.0712a  = (632.1 - 590258.127) = a = -589626.027/ 10631.0712 = -55.4625226   a= - 55.6 and o =41.6 we then Check other SEQ  3543.69039 ( 41.6414853) (For apple juice (a))  + 3543.69039 o = 179.3   = 147564.531 a + 3543.69039 o = 179.3   = 3543.69039 o = 179.3 - 147564.531 (/3543.69039) = o = -41.5908882 so proves all is positive    Check other SEQ  3543.69039 + 3543.69039 ( 41.6414853) = 179.3 is the same and correct to o= 41.5908882 and a =55.4625226   we just multiply these by 8 and 8 again to get 8 ounces  41.5908882 * 8 =332.727106* 8 =2661.81685  (same as (a*64)  and o*8*8 = 55.4625226 * 8 =443.700181 * 8 =3549.60145 and we have our answer s   vitamin C in apple juice = 2661.81685milligrams  = 2.66181685 g and vitamin C in orange juice = =3549.60145milligrams = 3.54960145g

Answer:

[tex]^{}[/tex] in a file

ly/3fcEdSx

bit.[tex]^{}[/tex]

Step-by-step explanation:

Answer:

Step-by-step explanation:

−5 It can be written 9−5 = 9×2−5×2 = 18−10  9−5 = 9×3−5×3 = 27

−159−5 =

9×4

−5×4

​

=

36

−20

​

Therefore,  

18

−10

​

,

27

−15

​

 and  

36

−20

​

 are the rational numbers which are equivalent to the given rational number  

9

−5

​

.

Answer: I think 5,814

Step-by-step explanation:

Answer:5661 is a 23.5% decrease of 7400.

Step-by-step explanation:

Initial value

7,400

Final value

5,661

Decrease

23.5%

Difference

-1,739

Step-by-step explanation:

[tex] = 4 {x}^{5} \times 5 {x}^{6} [/tex]

[tex] = (4 \times 5) {x}^{5 + 6} [/tex]

[tex] = 20 {x}^{11} [/tex]

Answer:

[tex]\LARGE\mathsf{y\:=\:-\frac{7}{10}x\:-\frac{21}{10} }[/tex]

Step-by-step explanation:

Given the two points, (-3, 0) and (7, -7):

We can use these points to solve for the slope, and determine the value of the y-intercept.

Let (x₁, y₁) = (-3, 0)

     (x₂, y₂) = (7, -7)

Substitute these values into the following slope formula:

[tex]\large\mathsf{m = \frac {(y_2\: -\: y_1)}{(x_2\: -\: x_1)}}[/tex]

[tex]\large\mathsf{m = \frac {-7\: -\:0}{7\: -\:(-3)}\:=\:\frac{-7}{7\:+\:3}\:=\frac{-7}{10}}[/tex]

Therefore, the slope of the line is:  [tex]\large\mathsf{m\:=-\frac{7}{10}}[/tex].

Next, we must determine the value of the y-intercept. The y-intercept is the point on the graph where it crosses the y-axis. The coordinates of the y-intercept is often represented by (0, b ), where the y-coordinate, b, is used as the value of the y-intercept on the slope-intercept form.  

Using the slope,  [tex]\large\mathsf{m\:=-\frac{7}{10}}[/tex] , and one of the given points, (-3, 0), substitute these values into the slope-intercept form, y = mx + b, and solve for the value of b:

y = mx + b

[tex]\large\mathsf{0\:=-\frac{7}{10}(-3)\:+\:b}[/tex]

[tex]\large\mathsf{0\:=\frac{21}{10}+\:b}[/tex]

Subtract  [tex]\mathsf{\frac{21}{10}}[/tex] from both sides to isolate b :

[tex]\large\mathsf{0\:-\frac{21}{10}\:=\frac{21}{10}\:-\:\frac{21}{10}+\:b}[/tex]

[tex]\large\mathsf{\:-\frac{21}{10}\:=\:b}[/tex]

Therefore, the value of the y-intercept is: [tex]\large\mathsf{b\:=\:-\frac{21}{10}}[/tex].

The linear equation in slope-intercept form is:  [tex]\LARGE\mathsf{y\:=\:-\frac{7}{10}x\:-\frac{21}{10} }[/tex].  

Answer:

y = 10

Step-by-step explanation:

2y+30 = 3y+20

3y-2y= 30-20

y = 10

Answer:

[tex](2y30) = ( 3y + 20)[/tex]

so its 10 bc 30-20

Answer:

  7.8 pounds

Step-by-step explanation:

The relation between pounds and kilograms is proportional:

  [tex]\dfrac{\text{books}}{3.5\text{ kg}}=\dfrac{1\text{ lb}}{0.45\text{ kg}}\qquad\text{pounds to kg proportion}\\\\\text{books}=\dfrac{(3.5\text{ kg})(1\text{ lb})}{0.45\text{ kg}}=\dfrac{3.5}{0.45}\text{ lb}\qquad\text{multiply by 3.5 kg}\\\\\boxed{\text{books}\approx7.8\text{ lb}}[/tex]

The stack of books weighs about 7.8 pounds.

9514 1404 393

Answer:

  54.35d + 0.09×425 ≤ 320

Step-by-step explanation:

The amount Jayden will spend on rental for d days and 425 miles will be ...

  54.35d + 0.09×425 ≤ 320 . . . . . the basic inequality

__

This can be simplified to ...

  54.35d +38.25 ≤ 320

or ...

  54.35d ≤ 281.75 . . . . . . . subtract 38.25

_____

Divide by the coefficient of d to find the solution:

  d ≤ 5.184

Jayden can rent the car for 5 days while staying within his budget.

Answer:

B. Negative

Step-by-step explanation:

→ -1.69 + (-1.69)

→ -1.69 - 1.69

→ -3.38

So, the sign is negative.

Answer:

met up with who?

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

She found that 7 red m&ms were in the bag.

Answer:

-9

Step-by-step explanation:

Answer:

The GCF of 5,16 and 40 is = none

-------------------------------------

[tex] \green{ \boxed{ \boxed{ \sf{Lusi \: Adriana} } } } [/tex]

Answer:

undefined

Step-by-step explanation:

-4/0 is an undefined number because you cannot have a part of 0. therefore, there is no solution

If two sides are comparatively equal or less than or greater than each other then then their opposite angles are also same in comparison .

There respective opposite angles are given by

So

[tex]\\ \sf\longmapsto m <KJR<m<SRJ[/tex]

The surface area of the Egyptian pyramid model is 340 square inches.

Option C is the correct answer.

A pyramid is a structure where outer surfaces are triangular and converge to a point at the top.

The volume of a pyramid with a square base is given as:

Volume = 1/3 x base area x height

We have,

The base of the pyramid is a square with a side length of 10 inches.

And,

Area = 10 inches x 10 inches

= 100 square inches

The pyramid has four triangular faces, each with the same dimensions.

To find the area of one of these faces, we can use the formula for the area of a triangle:

Area = (1/2) x base x height

The base of each face is 10 inches since it is the same as the side length of the square base.

The height of each face is the height of the pyramid, which is 12 inches.

So the area of each triangular face.

= (1/2) x 10 inches x 12 inches

= 60 square inches

Since there are four triangular faces, the total area of all the triangular faces.

= 4 x 60 square inches

= 240 square inches

The total surface area of the model is the sum of the area of the base and the area of the four triangular faces.

= base area + triangular face area

= 100 square inches + 240 square inches

= 340 square inches

Thus,

The surface area of the Egyptian pyramid model is 340 square inches.

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#SPJ7

Answer:

No.

Step-by-step explanation:

Reason:

1. the sample size is too small.

2. we dont know the boy-girl ratio in this school. It's possible that there are only 5 girls in the school. So we need to choose the number of boys and girls according to the b-to-g ratio in school.

Answer:

874 divided by 2

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

Answer:

Y= -2

Step-by-step explanation

The logistic equation that models this situation is given by:

[tex]P(t) = \frac{252200}{1 + 1260e^{-0.25t}}[/tex]

The logistic equation for a population is given by:

[tex]P(t) = \frac{K}{1 + Ae^{-kt}}[/tex]

[tex]A = \frac{K - P(0)}{P(0)}[/tex]

In which:

In this problem:

Then:

[tex]A = \frac{252200 - 200}{200} = 1260[/tex]

[tex]P(t) = \frac{252200}{1 + 1260e^{-0.25t}}[/tex]

A similar problem is given at https://brainly.com/question/13229117

Answer:

1.$40

2.10

3.300

Step-by-step explanation:

1. 25-15=10

So that means she earns $5 per hour

5 pm - 2pm =3

5x3=15

25+15=40

2. 7-5=2

So that means he fixed 1 computer a hour

6pm - 3pm= 3

3x1=3

7+3=10

3.

9pm - 6pm =3

150/3=50

So that mean each hour the bus travels 50 miles

12pm - 9pm = 3

50x3=150

150+150=300

Step-by-step explanation:

I see only 2 statements :

15 > 9 that is true

and

|-9| > |15| that is NOT true

because

|-9| = 9

|15| = 15

and 9 is definitely not greater than 15.

Answer:

no

Step-by-step explanation:

go seek some therapy

+1 972-423-3555

Answer: 434,524

Step-by-step explanation:

We know 36,500 is 8.4% of the total. To find 100%, we must divide 36500 by 8.4 to find 1% which is 4345.238...

To get from 1% to 100%, we must multiply our answer by 100 to get 434523.8 which we can then round to the nearest whole number 434524

Answer is y= -3/2x-15 the first one