A change jar contains nickels, dimes, and quarters, totaling an amount of $1.90. The amount of nickels is one more than twice the number of dimes. The number of quarters is one-half the total number of nickels and dimes. Find the number of each coin in the change jar.

The coding of the statistic is used to make it easier to work with the large sunshine data set

Reason:

The given parameters are;

The sample size, n = 3.

∑x = 947

Sample corrected sum of squares, Sₓₓ = 33,065.37

The mean and standard deviation = Required

Solution:

[tex]Mean, \ \overline x = \dfrac{\sum x_i}{n}[/tex]

The mean of the daily total sunshine is therefore;

[tex]Mean, \ \overline x = \dfrac{947}{30} \approx 31.5 \overline 6[/tex]

[tex]s = \dfrac{x}{10 } - \dfrac{1}{10}[/tex]

[tex]E(s) = \dfrac{31.5 \overline 6}{10 } - \dfrac{1}{10} = 3.05 \overline 6[/tex]

Alternatively

,[tex]The \ mean \ of \ the \ daily \ total \ sunshine, \, s = \dfrac{31.5 \overline 6 - 1}{10 } = 3.05\overline 6[/tex]

The mean of the daily total sunshine, [tex]\overline s[/tex] ≈3.05[tex]\overline 6[/tex]

[tex]Var(s) = \left(\dfrac{1}{10}\right)^2 \times Var \left(x \right)[/tex]

Therefore;

[tex]Var(s) = \left(\dfrac{1}{10}\right)^2 \times 33,065.37 = 330,6537[/tex]

Therefore;

The standard deviation, [tex]s_s[/tex] ≈ 18.184

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Answer:

1. a- rate is 3

b. 25 sec

c. 150 meters

d. d= 3/t

2. Roxanna

a. Jose 35

Marie 49

Melanie 63

Answer: 25 miles per hour

Step-by-step explanation:

Speed=Distance/Time

The distance is 150, and the time is 6. So, all we need to do is divide 150 by 6, and we get 25 miles per hour. Hope this helped!

Answer:

Step-by-step explanation:

r = d/t

d = 150 miles

t = 6 hours

r = 150 / 6

r = 25 miles / hour

Answer: 2*5*5

Step-by-step explanation:

2*5=1-*5=50

2 and 5 are prime numbers.

Answer:

Step-by-step explanation:

Out of 30 numbers, half is multiple of 2 and the third is multiple of 3.

We have 15 even numbers and 10 multiples of 3. Out of 10, half is even numbers and  therefore counted twice.

So we subtract 5 to get:

If we chose one ticket at random the probability is:

Answer:

10.) A

11.) D

12.) B

13.) C

Step-by-step explanation:

Answer:

8 hours

Explanation:

32÷4=8

It takes 4 machines to do something in 32 hours. If you had 4 times more machines it would be 4 times faster.

Answer:

[tex]5 \\ 2 \div 4 = 2 \\ 2 \div 6 = 3 \\ 2 \div 8 = 4. \\ {2}^{2} [/tex]

Answer:

number 1=2,2

number 2=5,2,3

number 3=2,3,4

number 4=3,6,11

number 5=5,4

Step-by-step explanation:

Number 1 explanation= this is LCM so first LCM blank box to devided is 2 and 2nd box also 2.

Answer:

K < - 16

Step-by-step explanation:

[tex]\frac{2k-3}{-5}[/tex] > 7

Multiply both sides by - 5 to clear the fraction, reversing the symbol as a result of multiplying by a negative quantity.

2k - 3 < - 35 (add 3 to both sides )

2k < - 32 ( divide both sides by 2 )

k < - 16

Answer:

69,660,000/258,000,000

Step-by-step explanation:

If you do part/whole = %/100 and solve that:

100 can go into 258,000,000 2580000 times, and whatever you do on the bottom must be done on the top, and since 27 is the percentage, 27 x 2580000 = 69,660,000

making the answer 69,660,000/258,000,000

Answer:

2, 3

Step-by-step explanation:

Answer:

10 and 60

Step-by-step explanation:

hope this helps :)

Answer:

x = 11/10

Step-by-step explanation:

5x + 5x -7 = 4

10x-7 = 4

×=11/10

add 7 to both sides of the equation

simplify

divide both sides of the equation by the same term

simplify

Answer:

An expression that represents repeated multiplication of the same factor is called a power. The number 5 is called the base, and the number 2 is called the exponent. The exponent corresponds to the number of times the base is used as a factor.

Answer:

Step-by-step explanation:

Let x be the number of minutes of calls.

The first plan has a $28 monthly fee and charges an additional $0.08 for each minute of calls:

The second plan has a $19 monthly fee and charges an additional $0.13 for each minute of calls:

When p(f) = p(s) we get the following equation for x:

Find the ratio:

9/27 = 1/3

6 x 1/3 = 2

Answer: b. 2

Answer:

Given that, figure LMNO and figure PQRS are similar

So, RQ / MN = SP / OL

Answer:

$109.48

Step-by-step explanation:

If you multiply 115 by 0.952, it will give you the answer which it $109.48 !

Answer:

109.48

Step-by-step explanation:

you have to multiply

.952 × 115

Answer:

Step-by-step explanation:

[tex]\sqrt{29} - Irrational[/tex]

[tex]\frac{10}{3} - Rational[/tex]

[tex]-2\pi - Irrational[/tex]

[tex]-52.(92) - Rational[/tex]

[tex]-\sqrt{81} - Rational[/tex]

Answer:

This would be A.

Step-by-step explanation:

Because

12[tex]b^{2}[/tex] - 6[tex]b^{2}[/tex] = 6[tex]b^{2}[/tex]

-3b - 3b = -6b

0 + ( -2 ) = -2

6[tex]b^{2}[/tex] - 6b - 2

Hope this helps!

Answer:

noo

because we know that (x,y) is the situation

nd the solution in yr question here y is( -)

hope it helps

Answer:

no

Step-by-step explanation:

( x, y ) = ( 4, - 4 )

Here,

x = 4

y = - 4

y ≠ - x

Answer:

-15pi = irrational

square root of -3 = irrational

square root of -4 = rational

-1/11 = rational

-27.92 repeated = rational

Step-by-step explanation:

Answer:

10.2

Step-by-step explanation:

50% of 12= 6

10%= 1.2

30%= 3.6

5%= 0.6

50%+30%+5%= 6+3.6+0.6=10.2

Answer:

sory i cant explain but tell anser c

Step-by-step explanation:

Answer:

divide both sides by 2

yes, it is in slope intercept form.

the slope is 1/2

[tex]2y=x+4[/tex]

Divide by 2

[tex]2y/2 = x/2 + 4/2[/tex]

[tex]y=\frac{1}{2} x +4[/tex]

The equation is now in intercept form

The slope of the line is [tex]\frac{1}{2}[/tex]

Answer:

5/6

Step-by-step explanation:

The number of bags bought by Javier will be 2.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Javier bought three more bags of Reese's than lollipops and two fewer bags of starburst than lollipops. bags of lollipops cost $3.75 each, bags of Reese's cost $5.50 each, and bags of starburst cost $4.25 each. He spends a total of $48.50.

From the equations and solve them to get the number of lollypops.

R = L+3

L = S - 2

The equation for total cost will be,

3.75L + 5.5R + 4.25S = 48.5

3.75( s - 2) + 5.5( S + 1) + 4.25S

3.75S - 7.5 + 5.50S + 5.5 + 4.25 S = 48.5

13.5S = 48.5 + 2

13.5S = 50.2

S = 4

The number of lollypops will be,

L = S - 2

L = 4 - 2

L = 2

Therefore, the number of bags bought by Javier will be 2.

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