DOES ANYONE KNOW THE ANSWER NEED HELP PLEASE ASAP!

Answer:

$20 - $1.75N

Step-by-step explanation:

the amount of change she receives is equal to the amount she paid less the total value of cards

total value of cards = price per card x total quantity of cards bought

$1.75 x N =  $1.75N

Amount of change = $20 - $1.75N

If she buys 10 cards, the amount of change she receives would be

$20 - $1.75(10) =

20 - 17.5 = 2.5

Answer:

$1251.59

Step-by-step explanation:

tax percent = 6.7%

cost price of watch = $113

tax amount = tax percent of total price

=6.7 % * 1173

=6.7/100 *1173

=78.591

Now find total cost of a watch with tax

total cost = tax amount + original cost price

=$78.591 + $1173

=$1251.59

Answer:

Mark can travel 93.97 miles in 1 hour

Step-by-step explanation:

Mark's rate of travel is 42 m / sec.  We want the same quantity in mi / hr.

Multiply 42 m / sec by the conversion factor

1 mile

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

1609.34 m

obtaining the following result in miles / sec:

42 m         1 mile

---------- * ------------------ = 0.0261 mi/sec

  sec        1609.34 m

Finanally, multiply the above result by the conversion factor  3600 sec / 1 hr:

(0.0261 mi/sec)(3600 sec / hr) = 93.97 miles

Mark can travel 93.97 miles in 1 hour

Answer:

Step-by-step explanation:

miles = 42 m / sec * 3600 sec / 1 hour * 1 mile / 1609.34 meters

miles = (42 * 3600 * 1 ) / (1 * 1609.34)

miles = 151200 / 1609.34

miles = 93.95

Answer:

The interval for which y is a decreasing function of x is:

[tex](0, 1)[/tex]

Or as an inequality:

[tex]0<x<1[/tex]

Step-by-step explanation:

We are given the equation:

[tex]\displaystyle y=\frac{e^x}{x}\, ,x>0[/tex]

And we want to find the range of values x for which y is a decreasing function of x.

y is decreasing whenever y' is negative. Find y' using the Quotient Rule:

[tex]\displaystyle y'=\frac{(e^x)'(x)-e^x(x)'}{(x)^2}[/tex]

Differentiate:

[tex]\displaystyle y'=\frac{xe^x-e^x}{x^2}[/tex]

y is decreasing whenever y' is negative. Thus:

[tex]\displaystyle 0>\frac{xe^x-e^x}{x^2}[/tex]

Multiply both sides by x². This is always positive so we do not need to change the sign:

[tex]xe^x-e^x<0[/tex]

Factor:

[tex]e^x(x-1)<0[/tex]

eˣ is always positive. So:

[tex]x-1<0[/tex]

Adding one to both sides produces:

[tex]x<1[/tex]

Therefore, y is a decreasing function of x when x is less than one (and greater than 0).

In interval notation:

[tex](0, 1)[/tex]

Or as an inequality:

[tex]0<x<1[/tex]

Answer:

8/ln(9)

Step-by-step explanation:

Let u=cos(x). Then du=-sin(x) dx.

If x=0, then u=cos(0)=1.

If x=pi/2, then ucos(pi/2)=0.

The intgral is rewriten as

Integrate((9^u (-du) , from u=1 to u=0)

-9^u/ln(9) |u=1..0)

Upperlimit goes in first no matter if it is tinier in value:

(-9^0/ln(9)--9^1/ln(9))

-1/ln(9)+9/ln(9)

8/ln(9)

Answer:

ac/5=a'c

Step-by-step explanation:

Answer:

10=x

Step-by-step explanation:

Intersecting Chords Formula:(segment piece) x (segment piece) =

       (segment piece) x (segment piece)

6*5 = 3*x

30 = 3x

Divide by 3

30/3 = 3x/3

10 =x

Answer:

The cylindrical one

Step-by-step explanation:

We know that the container does not have anything inside it, and we only want the surface, so we will figure out the surface area. The less surface area the package has, the less plastic is used.

The surface area for a cylinder is 2πrh +2πr². Plugging 5 in for r (the radius) and 19 in for the height, we get

2π(5)(19) + 2π(5)² = 753.98

The surface area for a rectangular prism is 2(wl + hl +hw), with 10 being the width, 12 being the length, and 19 being the height in this example, resulting in

2(10*12 + 19 * 12 + 10 * 19) = 1076

The surface area for the cylinder will clearly have less surface area/plastic

Answer:

Point B and point G

Step-by-step explanation:

the second quadrant is above the x axis and left to y axis

Answer:

point B AND G

Step-by-step explanation:

THAT IS THE CORRECT ANSWER ABOVE

the second quadrant is located at the top left of the XY plane

Answer:

2 -9x = 6

Step-by-step explanation:

2 - 9x = 6

-9x = 6-2

-9x = 4

x = 4/-9

Answer:

1. Melissa and Corey started on different trails.

2. Melissa hiked up the trail for a longer period of time than Corey.

3. Melissa and Corey crossed paths between 60 and 90 minutes.

4. Corey began his descent before Melissa.

Step-by-step explanation:

A. Melissa and Corey started on different trails. - TRUE

Rationale: at the start, when t = 0, Melissa hiking trail elevation was 8,342 ft while that of Corey was 10,004 ft. Therefore, they started on different trails.

B. Melissa hiked up the trail for a longer period of time than Corey. - TRUE

Rationale: It took Melissa 90 mins to reach the highest elevation of 12,921 while it took just 60 mins for Corey to teach same elevation height at 60 mins

C. Melissa and Corey crossed paths between 60 and 90 minutes. - TRUE

Rationale: As Melissa was still ascending between 60 - 90 mins from 11,239 to 12,921, Corey was descending at the same time . So their path crossed.

D. Corey began his descent before Melissa. - TRUE

Rationale: Corey started descending earlier at 60 mins before Melissa

E. As Melissa’s time increased from 0 to 60 minutes, her elevation decreased. - FALSE

Rationale: as Melissa's time increased from 0 to 60 mins, her elevation increased also from 8,342 ft to 11,239 ft.

Answer:

A) Melissa and Corey started on different trails.

B) Melissa hiked up the trail for a longer period of time than Corey.

D) Corey began his descent before Melissa.

Step-by-step explanation:

I got it right on Edge :D

Answer:

24 is C and 25 is B , ill try and do the other questions if u need me to explain 24 and 25 lmk!

Answer:

A. y = 1/4x - 2

Step-by-step explanation:

The y- coordinate is placed at -2, on the y-axis

Then the line rises up 1 unit, and runs 4 units, landing on a point and forming the line.

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

$15

Step-by-step explanation:

50% = .50

$10 × .50 = 5

10 + 5 = 15

Answer:

1300

Step-by-step explanation:

4 times 5 = 20

260 times 5 = 1300

Answer:

1300 times

Step-by-step explanation:

195 is is 3 X 65 so dividing 195 by 3 gets you 65

65 X 20 = 1300

Answer:

a = 254.5 mm² ( if using accurate value of π)

a = 254.4 mm² (if using 3.14 as approximate value of π)

Step-by-step explanation:

a = πr²

a = π * 9²

a = π * 81

(note using π = 3.1415926536)

a = 254.4690049408

Rounded

a = 254.5 mm²

(a = 254.4 If using π = 3.14)

Answer:

(x=4)^2=23; the third one

Step-by-step explanation:

When you solve it using the quadratic formula it's the same as the original answer.

Answer:

Perimeter= 20 cm

Area = 25 cm^2

Difference between 28cm^2 and 8cm^2= 20cm^2

Step-by-step explanation:

The formula to calculate the perimeter of a square is P= 4 * (the length of any side or "s").

Therefore:

P = 4 * 5cm

P = 20 cm

The formula for calculating the area of a square is A= (length of any side or "s")^2

So:

A= 5cm^2

A= 25cm^2

Remember the units in your answer!

The difference between indicates subtraction, and 28cm^2 and 8 cm^2 are like terms so:

28cm^2 - 8 cm^2 = 20 cm^2

Answer:

x = 10

Step-by-step explanation:

x - 3 + 5 = 12

x + 2 = 12

x + 2 - 2 = 12 - 2

x = 10

Answer:

x = 10

Step-by-step explanation:

x−3+5=12

Combine like terms

x +2 = 12

Subtract 2 from each side

x+2-2 = 12-2

x = 10

Answer:

Step-by-step explanation:

74+47=x(sum of two interior opposite angle is equal to the exterior angle formed)

121=x

Answer:

1 and 8,  4 and 5

Step-by-step explanation:

There are two pairs, 1 and 8,  4 and 5

The angles in each pair must be on opposite sides of the transversal k, and on the outsides of the parallel lines l and m.

Answer:

The area of the figure is 61.24 cm

Step-by-step explanation:

The area for the parallelogram is determined by base x height, so 7 x 6 = 42.

The area of a circle is [tex]\pi[/tex]r², with r being the radius, so that means the circle area is 38.48, but because its a semicircle, its half of that, so the area is 19.24.

42 + 19.24 = 61.24

Answer:

for 50 pulls, 12.5 blue socks, but you cant have half of a sock so we say 12

for 1000 pulls, 250 blue socks

for 10,000 pulls, 2500 blue socks

Step-by-step explanation:

First we add 5, 7 and 8 to find the total number of socks, 5+7=12 and 12+8 = 20

5 is the amount of blue socks, so

5/20 * how many pulls are conducted is the probability for blue socks

7 is the amount of pink socks, so

7/20 * how many pulls are conducted is the probability for pink socks

and

8 is the amount of yellow socks, so

8/20 * how many pulls are conducted is the probability for yellow socks

Answer: volume of the cylinder = 1583.36 ft3

Step-by-step explanation: where volume of a cylinder = π h

where h = 14 ft

diameter 12 ft, so radius = 12 / 2 = 6 ft

therefore volume = π * * 14 = 1583.362697 to the nearest tenths place will be 1583.36

Answer:

The correct answer is Choice C.

Step-by-step explanation:

When figuring out the perimeter, we need to count the number of sides. There are 8 sides in total. 5 sides have length labeled  'x' . 2 sides have the length labeled 'y' . Only 1 side has the length labeled 'z' .

In order to put that into an expression, just add the sides up.

5 sides of z + 2 sides of y + 1 side of z

Therefore, the expression that represents the perimeter of the figure is 5x + 2y + z.