Please if someone can help me

Answer:

18 Nickels, 6 Quarters

Step-by-step explanation:

For this problem, let's build a system of equations to find the number of nickels and dimes you have.  Let N represent the number of nickels and Q represent the number of quarters you have.

The first equation, you have 3 times as many nickels as quarters:

N = 3Q

The second equation, you have a total of $2.40.  Given we know nickels are $0.05 and quarters are $0.25:

0.05N + 0.25Q = 2.40

Now, let's use the two equations to find the number nickels and quarters you have.

N = 3Q

0.05N + 0.25Q = 2.40

0.05(3Q) + 0.25Q = 2.40

0.15Q + 0.25Q = 2.40

0.4Q = 2.40

Q = 6

Now, let's plug the value back into the equation:

N = 3Q

N = 3(6)

N = 18

And we can verify these values with the second equation:

0.05N + 0.25Q = 2.40

0.05(18) + 0.25(6) ?= 2.40

0.90 + 1.50 ?= 2.40

2.40 == 2.40

Therefore, we have found and verified the amount of Nickels and Quarters you have.

Cheers.

Answer:

Ans =17.37

32.7 -15.33=17.37

Answer:

23.04

Step-by-step explanation:

Answer:

25.81%

Step-by-step explanation:

32/124 were homeruns, to make it into a percentage, multiply it by 100%

32/124 × 100 = 25.81%

Answer:

25%

Step-by-step explanation:

32 divided by 124 =.2580

Answer:

I'm assuming that the answer is -10

Step-by-step explanation:

Because you are being asked to subtract a negative, the two negative signs cancel each other out to make the equation -35+25. So the answer is -10.

Answer:

-1/5 im right hope all of you have a wonderful day

Step-by-step explanation:

A --------¢ D

B --------¢ E

C --------¢ F

Just match like this buddy.

Answer: Area of circle = 12.57cm² (I am assuming you mean area here)

Step-by-step explanation:

Area = πr²

radius = diameter ÷ 2

r = 4 ÷ 2

r = 2

π = 3.14159265359

shorten π to 3.14 for future reference. I just used the π button a a calculator for this answer though.

A = π × 2

A = 12.57

Answer:

5

Step-by-step explanation:

Slope is defined as rise over run, so it is (26-11)/(5-2) = 15/3 = 5

Answer:

slope is 5

Step-by-step explanation:

slope formula says m= y2-y1/x2-x1

m=26-11/5-2

m=15/3

m=5

Answer:

$1.25x+$7=$43.25

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

Write the number in exponential form with the base of 7

[tex]\sqrt{7^{2} }[/tex]

Reduce the index of the radical and exponent with 2

7

Solution

7

Answer:

Step-by-step explanation:

Solve for π

Answer:

Step-by-step explanation:

V = 4 π r³

      3

solve for π

3*V = 4π r³

3V = π

4r³

therefore.

π = 3V

      4r³

Answer:

Z is 52 degrees.

Step-by-step explanation:

52 plus 38 is 90

Answer:

52°

Step-by-step explanation:

You can say this a 'cardesian plane', where adjacent quadrants are at right angle to each other. So,

z + 38 = 90°

z = 90° - 38° = 52°

Answer:

which class can you say then I can tell answer

Answer:

Average rate of change =250

Step-by-step explanation:

Formula to determine average rate of change of the function,

Average rate of change = [tex]\frac{f(x_2)-f(x_1)}{x_2-x_1}[/tex]

Where [tex]x_1[/tex] and [tex]x_2[/tex] are the points representing number of years after year 2000.

Since [tex]x_1[/tex] = 5 and [tex]x_2=19[/tex],

[tex]f(x_2)=650[/tex]

And [tex]f(x_1)=300[/tex]

Now average rate of change = [tex]\frac{650-300}{19-5}[/tex]

                                                = [tex]\frac{350}{14}[/tex]

                                                = 250

Therefore, average rate of change of the number of influenza cases from 2005 to 2019 is 250.

Answer:

the slope is -7/3

Step-by-step explanation:

8-15/10-7

-7/3

Answer:

15 full servings before not having enough left over for another full serving.

Step-by-step explanation:

Answer:

42

Step-by-step explanation:

Answer:

63/10 or 6 3/10

Step-by-step explanation:

Answer:

B) 2 frozen dinners and 2 dozen jelly doughnuts

Step-by-step explanation:

Calculate the total utility for each option.

A) 46

B) 32 + 21 = 53

C) 16 + 30 = 46

D) 28

Option B has the highest total utility.

Answer:

-2.16

Step-by-step explanation: for all you edge people

Answer: 26%

Step-by-step explanation:

Only 13 out of the 50 make more than 400$ a week. So it’s 13/50=26%

Answer:

26%

Step-by-step explanation:

find the total

19+18+8+5=50

find the ppl who earn >400

last 2 columns

8+5=13

find the percent

13/50=26/100

=26%

Answer:

5

Step-by-step explanation:

Answer:

5 Gallons of gasoline

Step-by-step explanation:

This is true because 190÷38 is five. If you want to check the work 38×5 is 190.

I also got it right on edg. 2020

Answer:

answer is the 2nd one

Step-by-step explanation:

y = 1/3(3) - 1 = 1 - 1 = 0   (3,0)

y = 1/3(0) - 1 = 0 - 1 = -1   (0, -1)

y= 1/3(6) - 1 = 2 - 1 = 1     (6, 1)

Answer:

(a) Explained below.

(b) 0.0294

(c) 0.0173

(d) 0.09827

(e) 0.0452

Step-by-step explanation:

The complete question is:

According to an​ airline, flights on a certain route are on time 80​% of the time. Suppose 25 flights are randomly selected and the number of​ on-time flights is recorded.

​(a) Explain why this is a binomial experiment.

​(b) Find and interpret the probability that exactly 16 flights are on time. ​

(c) Find and interpret the probability that fewer than 16 flights are on time.

​(d) Find and interpret the probability that at least 16 flights are on time.

​(e) Find and interpret the probability that between 14 and ​16 flights, inclusive, are on time.

Solution:

(a)

Let the random variable X be defined as the number of​ on-time flights.

A Binomial experiment has the following properties:

If a random variable X is used in an experiment and the experiment has all the above mentioned properties, then the random variable X is known as a binomial random variable.

All of these properties can be confirmed for the random variable X.

Thus, this is a binomial experiment.

(b)

Compute the probability that exactly 16 flights are on time as follows:

[tex]P(X=16)={25\choose 16}(0.80)^{16}(0.20)^{25-16}[/tex]

        [tex]=2042975\times 0.0281475\times 0.000000512\\=0.029442375072\\\approx 0.0294[/tex]

Thus, the probability that exactly 16 flights are on time is 0.0294.

(c)

Compute the probability that fewer than 16 flights are on time as follows:

[tex]P(X<16)=\sum\limits^{15}_{x=0}{{25\choose x}(0.80)^{x}(0.20)^{25-x}}[/tex]

                 [tex]=0.0000+0.0000+....+0.011777\\=0.0173[/tex]

Thus, the probability that fewer than 16 flights are on time is 0.0173.

(d)

Compute the probability that at least 16 flights are on time as follows:

[tex]P(X\geq 16)=1-P(X<16)[/tex]

                 [tex]=1-0.0173\\=0.9827[/tex]

(e)

Compute the probability that between 14 and 16 ​flights, inclusive, are on time as follows:

[tex]P(14\leq X\leq 16)=\sum\limits^{16}_{x=14}{{25\choose x}(0.80)^{x}(0.20)^{25-x}}[/tex]

                          [tex]=0.004+0.0118+0.0294\\=0.0452[/tex]

Thus, the probability that between 14 and 16 ​flights, inclusive, are on time is 0.0452.

Answer:

[(2*8) + 3] *4 = 76

[2*(8 - 3)]*4 = 40

Step-by-step explanation:

Los paréntesis ( ), corchetes [ ] y llaves {} son símbolos de agrupación que indican el orden de las cuatro operaciones aritméticas básicas (suma, resta, multiplicación y división). Las reglas del orden de operaciones establece que se debe realizar primero el cálculo dentro de los símbolos de agrupación.

En otras palabras, la jerarquía de operaciones es el orden en el que hay que realizar las distintas operaciones, ya que unas tienen prioridad frente a otras. Y establece primero debes empezar por resolver los paréntesis, luego los corchetes y finalmente las llaves. Es decir, cuando haya símbolos de agrupación dentro de símbolos de agrupación, calcula de adentro hacia afuera. Esto es, empieza simplificando los símbolos de agrupación en el centro.

Para obtener 76, se pueden realizar la siguiente operación combinada:

[(2*8) + 3] *4

Aplicando lo anteriormente mencionado de la jerarquía de operaciones, comienzas por resolver el paréntesis:

[16 + 3]*4

Ahora, resolviendo el corchete:

19*4

Finalmente, resolviendo la multiplicación:

19*4= 76

Entonces [(2*8) + 3] *4 =76

Para obtener 40, se pueden realizar la siguiente operación combinada:

[2*(8 - 3)]*4

Comenzando a resolver el paréntesis:

[2*5]*4

Ahora, resolviendo el corchete:

10*4

Finalmente, resolviendo la multiplicación:

10*4= 40

Entonces [2*(8 - 3)]*4 = 40