Dustin has only nickels and quarters in his piggy bank. He has 49 coins total for a combined value of $8.85. How many of each does he have . SHow your work

Answers

Answer 1

Answer: $x-\ nickels\ny-\ quarters\n\n0,05x+0,25y=8,85\nx+y=49\ \ \ \ x=49-y\n\n\0,05(49-y)+0,25y=8,85\n2,45-0,05y+0,25y=8,85\n0,2y+2,45=8,85\ \ \ | subtract\ 2,45\n0,2y=6,4\ \ \ | divide\ by\ 0,2\ny=32\n\nx=49-32=17\n\nHe\ had\ 17\ nickels\ and\ 32\ quarters.$

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The mean age of 5 people in a room is 27 years.A person enters the room.
The mean age is now 27.
What is the age of the person who entered the room?

Answers

Answer:

thee answer is 27

Step-by-step explanation:

As the first part was 27 and the second pARTR 27 NO MATHS NEED TO BE INCLUDED AS 27 IS THE CORRECT

The answer is 135
27 x 5=135

Please i need help ASAP!!! Extra points!!The cost of 3-D movie tickets is $12 for 1 ticket,$24 for 2 tickets, and $36 for 3 tickets. Determine whether the cost is proportional to the number of tickets by graphing on the coordinate plane.Explain your reasoning.

Answers

Answer:

yes the cost is proportional to the number of tickets

Step-by-step explanation:

for each 1 ticket added, it is $12 more

you can graph it by using the equation y=12x where x is the amount of tickets and the y-intercept is (0,0)

How do I expand
r(r-r2) the 2 is meant to be r squared

Answers

$r(r-r^2) \n =r^2-r^3$

$r(r-r^2) =\n r^2-r^3$

Item 14Question 1
REASONING The data sets show the years of the coins in two collections.

Your collection: 1950, 1952, 1908, 1902, 1955, 1954, 1901, 1910

Your friend’s collection: 1929, 1935, 1928, 1930, 1925, 1932, 1933, 1920

Compare the measures of center and the measures of variation for each data set.

Your collection's mean is
. Your collection's median is
. Your collection's range is
. Your collection's interquartile range is
. Your collection's mean absolute deviation is
.

Your friend's collection's mean is
. Your friend's collection's median is
. Your friend's collection's range is
. Your friend's collection's interquartile range is
. Your friend's collection's mean absolute deviation is
.

Answers

Your collection's mean answers

median-1930

range-54

interquartilerange-50

meanabsolutedevitation-23.75

Your friends collection mean answers

median-1929.5

range-15

interquartilerange-7

meanabsolutedevitation-3.5

Would really appreciate a brainliest!!

Q:What is the indicated term of the arithmetic sequence? someone help!!!!
a14 for 200,196,192...
A:
a. 148
b. 252
c. 144
d. 239

Answers

$a_1=200;\ a_2=196;\ a_3=192\n\nr=a_2-a_1\to r=126-200=-4\n\na_n=a_1+(n-1)r\n\na_n=200+(n-1)\cdot(-4)=200-4n+4=204-4n\n\na_(14)=204-4\cdot14=204-56=148\n\nAnswer:A$