Graph y = 2.3 - 7.
y
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AU
8+
7+
6+
5
CO
3+
2+
1+
MY
-9-8-7 -6 -5 4 -3 -2
1 2 3 4 5 6 7 8 9
Cou
-3
SA
-5-
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-7-
-8
MY
Pra

Answer:

A would be the answer

Step-by-step explanation:

Hope it was helpful .

Answer: 0.40 2.576 √0.40(0.60)

——————

50

Step-by-step explanation:

Put a upside down T which is the Plus-minus sign in between .40 and 2.576

The 99% confidence interval for the proportion of songs on her phone that are by a female artist will be given below. Then the correct option is A.

[tex]0.4 \pm 2.58 \times \dfrac{0.4(1-0.4)}{50}[/tex]

It is also called the Gaussian Distribution. It is the most important continuous probability distribution. The curve looks like a bell, so it is also called a bell curve.

Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs are by a female artist.

She takes an SRS of 50 songs on her phone and finds that 20 of the songs sampled are by a female artist.

The 99% confidence interval for the proportion of songs on her phone that are by a female artist will be

[tex]\rm x = 20\\\\n = 50 \\\\p = \dfrac{20}{50} = 0.4\\\\z= 99\% \ confidence\ interval = 2.58[/tex]

Then we know that

[tex]p\pm z \times \dfrac{p(1-p)}{n}\\\\0.4 \pm 2.58 \times \dfrac{0.4(1-0.4)}{50}\\\\0.4 \pm 2.58 \times \dfrac{0.4*0.6}{50}\\\\0.4 \pm 0.012384[/tex]

More about the normal distribution link is given below.

https://brainly.com/question/12421652

9514 1404 393

Answer:

  a) at t=12, Whitney is speeding up

  b) 13/48 = 0.2704833 . . . miles/min; not a good measure

Step-by-step explanation:

a) At t=12, Whitney's velocity is -0.2 miles/min and is decreasing. That is, the magnitude of her velocity (speed) is increasing. Whitney is speeding up at t=12.

__

b) The (signed) area under the curve, divided by the time period (24 min) will give Whitney's average velocity. It can be found by using the formulas for area of a trapezoid and triangle.

  distance 0-11 = 1/2(11 +3)(0.8) = 5.6 miles

  distance 11-16 = 1/2(5)(-0.6) = -1.5 miles

  distance 16-24 = 1/2(8)(0.6 = 2.4 miles

Whitney's average velocity is ...

  (5.6 -1.5 +2.4)mi/(24 min) = 6.5 mi/(24 min) = (13/48) mi/min ≈ 0.270 mi/min

The laws of physics tell us that no work is being done if velocity is constant. Hence, the strenuousness of Whitney's pedaling depends on the acceleration she is maintaining. The average velocity measure tells nothing of that, so is a poor measure of how strenuously Whitney is pedaling.

Answer:

X=8

Step-by-step explanation:

64 Divided by Eight equals Eight.

Because he worked eight hours that week and earned $64 so divide that up by eight then you got your answer.

Answer:

0,0215

Step-by-step explanation:

Answer:

A,B,E or 1,2,5

if its letters or numbers.

Step-by-step explanat

The expressions that are the result of decreasing x by 80% will be (1 - 0.80)x, x - (80/100)x, and (20/100)x. Then the correct options are A, C, and E.

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

The expressions that are the result of decreasing x by 80%.

We know that if something is decreased by a percentage p% then the percentage is written as (1 - p%). Then the expression is written as,

⇒ [(100 - 80) / 100]x

Then the expression can be written as,

⇒ [(100 - 80) / 100]x

⇒ x - (80/100)x

⇒ x - 0.80x

⇒ (1 - 0.80)x

⇒ 0.20x

⇒ (20/100)x

The expressions that are the result of decreasing x by 80% will be (1 - 0.80)x, x - (80/100)x, and (20/100)x. Then the correct options are A, C, and E.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

Answer:

djdmfkdkdjdj

Step-by-step explanation:

jfjffmfkdnfjdjdndkd

Answer:

dos dados con seis o un dado con 5 y otro con 6

Step-by-step explanation:

Answer:

1/12

Step-by-step explanation:

0_____________________________________0

The face says brainliest please!

Answer:

go make me a sandwhich you witch

Step-by-step explanation:

Answer:

Ratios describe proportions. We can always multiply across ratios, or divide across them (as long as we do it to all of them). For example, the ratio 3 : 2 is the same as 6 : 4 and 300 : 200. Accuracy Tip.

Step-by-step explanation:

Answer:

Blue Star

a.                                   The Ford TriVan   The Honda CityVan

Total life-cycle costs          $94,368                $90,936

Based on life cycle cost, the Honda CityVan is the best choice.

b. Blue Star needs to put on the Ford TriVan 9,032 miles more for the cost to be equal with the Honda CityVan's.

c. The crossover point in years = 5 months

Step-by-step explanation:

a) Data and Calculations:

                                        The Ford TriVan   The Honda CityVan

Purchase costs                  $28,000                 $32,000

Fuel efficiency per gallon   24 miles                 37 miles

Operating cost per mile     $0.20                     $0.22

Total operating costs         $4,400                   $4,840

Estimated annual distance 22,000 miles        22,000 miles

Gallons of fuel consumed  916.7 (22,000/24) 594.6 (22,000/37)

Total cost of fuel                 $3,896                  $2,527

Fuel cost per mile              $0.18                      $0.115

Total cost per mile             $0.38                     $0.335

Expected life of truck         8 years                   8 years

Average gas price = $4.25 per gallon

Total costs:

                                        The Ford TriVan   The Honda CityVan

Annual costs:

Total operating costs         $4,400                   $4,840

Total cost of fuel                $3,896                   $2,527

Annual costs                      $8,296                   $7,367

Life cycle costs:

Annual costs for 8 years   $66,368                $58,936

Purchase costs                  $28,000                $32,000

Total life-cycle costs          $94,368                $90,936

Difference in costs between Ford TriVan and Honda CityVan = $3,432 ($94,368 - $90,936)

Miles to put on the Ford TriVan for the life cycle cost to be equal to the life cycle cost of the Honda CityVan

= Difference in costs divided by total cost per mile of the Ford TriVan

= 9,032 miles ($3,432/$0.38)

Annual distance = 22,000 miles

Monthly distance = 1,833 miles

9,032/1,833 = 4.93 months or 5 months approximately

Answer:

x = 0

Step-by-step explanation:

2^x = 1

The only way a number can equal one when there's an exponent is when the exponent is 0

x = 0

2^0 = 1

Answer:

4

Step-by-step explanation:

x-1 must be greater than 2.

2-1 is lesser than 2.

3-1 is equal to 2.

4-1 is greater than 2, so the answer is 4.

Answer:

Step-by-step explanation:

30 out of 40 could be used to estimate that 750 out of 1000 would say 'no'

30/40 equals 3/4

3/4 of 1000 is 750

Answer:

1/6

Step-by-step explanation:

Probability that any arrives on time = 2/3

Probability that teaa arrives on time = 3/4

Probability that teas will not arrive in time = 1 - P(tess arrives on time) = 1 - 3/4 = 1/4

Hence,

The probability that Amy arrives in time and tess does not equals

2/3 * 1/4 = (2*1) / (3*4) = 2 / 12 = 1/6

Using it's concept, it is found that there is a 0.1667 = 16.67% probability that Amy will arrive on time while Tess will not.

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem:

Since they are independent, we multiply them, hence:

[tex]P = \frac{2}{3} \times \frac{1}{4} = \frac{2}{12} = 0.1667[/tex]

0.1667 = 16.67% probability that Amy will arrive on time while Tess will not.

More can be learned about probabilities at https://brainly.com/question/14398287

Answer:

y = 1/2x + 10  

Step-by-step explanation:

I'm not sure if this is right but:

First you work out the gradient of the line which is the difference in y divided by the difference in x:  

Gradient = (14 - 11) ÷ (8 - 2) = 3 ÷ 6 = 1/2    

the gradient is 1/2 so you'd write that as: y= 1/2x + c

Then you need to work out the y-intercept ( c )  

You do this by substitution:

14 = 1/2(8) + c

14 = 4 + c

c = 10

So the y-intercept is 10 so you'd write that as:

y = 1/2x + 10

Answer:

45units²

Step-by-step explanation:

Triangle area = (1/2)(base length)(perpendicular height)

= (1/2)(6)(15)

=3(15)

=45units²

Answer:

[tex](x + 2)^2 + (y + 5)^2 = 1[/tex]

Step-by-step explanation:

Equation of a circle:

The equation of a circle with center [tex](x_0,y_0)[/tex] and radius r is given by:

[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]

Center: (−2, −5); radius= 1

This means that [tex]x_0 = -2, y_0 = -5, r = 1[/tex]. So

[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]

[tex](x - (-2))^2 + (y - (-5))^2 = 1^2[/tex]

[tex](x + 2)^2 + (y + 5)^2 = 1[/tex]

This is the equation of the circle.

Answer:

A cube has 6 faces and on each face there are two diagonals joining nonadjacent vertices and there are 4 diagonals through the interior of the cube. Thus in total there are 6×2+4=16 diagonals in a cube. In this cube, the diagonals through the interior of the cube are. AH, CF, DE and BG.

Step-by-step explanation:

Answer: the answer is 1.6 or 0.6.

Answer:

8⅓

Step-by-step explanation:

divide 5 by (3/5). To divide by a fraction, flip the fraction and multiply. Make the 5 into a fraction by putting a '1' underneath:

(5/1)(5/3) = 5x5/1x3 = 25/3 = 8⅓

You can take 3/5 away from 5, 8⅓times

Answer:

x = ±8

Step-by-step explanation:

The given equation is :

[tex]3x^2-192=0[/tex]

We can use the Square root Property to solve it.

Adding 192 both sides,

[tex]3x^2-192=0\\\\3x^2=192[/tex]

Dividing both sides by 3.

[tex]x^2=64\\\\x=\sqrt{64} \\\\x=\pm 8[/tex]

So, the value of x is equal to +8 and -8.

Answer:

A

Step-by-step explanation:

It never restates the thesis, in which you are required to in anything resembling a formative, constructed response, or an essay.

Answer:

-32

Step-by-step explanation:

but I'm not that sure

Answer:

they are the same because lxw is the b so all you need to do is bxh

Step-by-step explanation:

Answer:

9. 3x+11+25=90 90-36=54 54/3=x x=18

11. 45+3x=180, 180-45=135, 3x=135, 135/3=45 x=45

Answer:

794

Step-by-step explanation:

125.8•5.5+115

679.3+115

794

I hope this helps you

Approximately 73 Great Danes weigh more than 125.8 lbs.

Mean [tex]\mu[/tex]=115 lb.

Standard deviation [tex]\sigma[/tex] =5.4 lb.

Z-score depicts how much a given value differs from the standard deviation.

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

[tex]z=\frac{125.8-115}{5.4}[/tex]

[tex]z=2[/tex]

From the standard normal table P-value corresponding to z=2 i.e. P(x>125.8) = 0.02275

Total population =3200

3200*0.02275 = 72.8 ≈73

Thus, approximately 73 Great Danes weigh more than 125.8 lbs.

To get more about the z-score visit:

https://brainly.com/question/25638875